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Joined: 02 Sep 2009
Posts: 50613

150 Hardest and easiest questions for DS
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21 Aug 2015, 02:42
150 Hardest Data Sufficiency Questions (Oct 1st, 2018  Nov 1st, 2018) Are you familiar with the GMAT Club's timer?We have pulled timer results from our database and analyzed every question in the forum. Based on those results, we have compiled a list of the hardest questions in each of the question forums we have. Below I am presenting to you the top 150 questions from DS forum. Data Sufficiency (DS)  Rank  Title  Topics  1  Train A leaves New York for Boston at 3 PM and travels at  Difficulty: 700Level, Distance/Rate Problems  2  In the correctly worked addition problem above, A, B, C, D  Difficulty: 700Level, Arithmetic, Number Properties, Source: Manhattan GMAT  3  w, x, y, and z are integers. If w > x > y > z > 0, is y a common  Difficulty: 700Level, Divisibility/Multiples/Factors, Number Properties, Source: Manhattan GMAT  4  What is the perimeter of PQRS ? (1) x = 30 degree  Difficulty: 700Level, Geometry  5  A car dealership carries only sedans and SUVs  Difficulty: 700Level, Percent and Interest Problems, Word Problems, Source: Veritas Prep  6  If k is an integer and x(x – k) = k + 1, what is the value of x?  Difficulty: 700Level, Algebra, Source: Other  Please specify  7  n and k are positive integers. When n is divided by 23, the quotient i  Difficulty: 700Level, Remainders, Source: GMATPrepNow  8  If n is a prime number greater than 2, is 1/x > 1?  Difficulty: 700Level, Inequalities, Source: Manhattan GMAT  9  If, in the addition problem above, a, b, c, d, e, f, x, y, a  Difficulty: 700Level, Arithmetic  10  Math Revolution and GMAT Club Contest! There is a sequence, 4(10^n),  Difficulty: 700Level, Number Properties, Sequences, Source: Manhattan GMAT, Source: Math Revolution  11  Right triangle ABO is drawn in the xyplane, with OB as hypo  Difficulty: 700Level, Geometry, Source: Manhattan GMAT  12  When 120 is divided by positive singledigit integer m the remainder  Difficulty: 700Level, Absolute Values/Modulus, Divisibility/Multiples/Factors, Source: Other  Please specify  13  For integers a and b, if (a^3 a^2 b)^1/2 = 7, what is the  Difficulty: 700Level, Algebra  14  The average (arithmetic mean) of 5 distinct, single digit integers is  Difficulty: 700Level, Number Properties, Source: Princeton Review  15  Abe, Beth, Carl and Duncan are four siblings, among which Abe and Carl  Difficulty: 700Level, Number Properties, Source: eGMAT  16  The cost of 3 chocolates, 5 biscuits, and 5 ice creams is  Difficulty: 700Level, Word Problems  17  If h and k are both positive integers, are both roots of the equation  Difficulty: 700Level, Algebra  18  P and Q are prime numbers less than 70. What is the units digit of P*Q  Difficulty: 700Level, Number Properties, Source: eGMAT  19  What is b in the circle shown above?  Difficulty: 700Level, Geometry, Source: Other  Please specify  20  Julian bought 6 kilograms of cheese from each of Deli A and Deli B. At  Difficulty: 700Level, Word Problems, Source: 800 Score  21  If 20 Swiss Francs is enough to buy 9 notebooks and 3  Difficulty: 700Level, Inequalities, Word Problems  22  Is a  3b an even number?  Difficulty: 700Level, Number Properties  23  If x is a positive integer less than 100 such that x is  Difficulty: 700Level, Algebra, Exponents/Powers, Source: eGMAT  24  w, x, y, and z are integers. If z > y > x > w, is w > x^2  Difficulty: 700Level, Absolute Values/Modulus, Inequalities, Source: Kaplan  25  In the picture, quadrilateral ABCD is a parallelogram and  Difficulty: 700Level, Geometry  26  The numbers D, N, and P are positive integers, such that D < N, and N  Difficulty: 700Level, Exponents/Powers, Number Properties, Source: Magoosh  27  If x, y and z are positive integers such that x^4*y^3 = z^2  Difficulty: 700Level, Number Properties, Source: eGMAT  28  The Range of Set A is R. A number having equal value to R  Difficulty: 700Level, Statistics and Sets Problems  29  At a restaurant, a group of friends ordered four main dishes  Difficulty: 700Level, Min/Max Problems, Source: Manhattan GMAT  30  If a, b, and c are positive integers such that 1/a + 1/b = 1  Difficulty: 700Level, Fractions/Ratios/Decimals, Inequalities, Source: Manhattan GMAT  31  Three employees, A, B and C, clean a certain conference room each day.  Difficulty: 700Level, Work/Rate Problems, Source: Other  Please specify  32  A cube is made up of equal smaller cubes. Two of the sides  Difficulty: 700Level, Geometry  33  A set of positive integers contains twice as many even integers as odd  Difficulty: 700Level, Divisibility/Multiples/Factors, Number Properties, Probability  34  If x, y, and z are all distinct positive integers and the percent  Difficulty: 700Level, Algebra, Number Properties, Percent and Interest Problems, Source: Manhattan GMAT  35  Is 1/(xy) < y  x  Difficulty: 700Level, Inequalities  36  A natural number p, when divided by a certain divisor q, gives  Difficulty: 700Level, Number Properties, Remainders, Source: Jamboree  37  A newer machine, working alone at its constant rate  Difficulty: 700Level, Work/Rate Problems, Source: Veritas Prep  38  Is y^2 + 7y + xy even?  Difficulty: 700Level, Divisibility/Multiples/Factors, Number Properties  39  The number of elements in set K is an odd number. The minimum value of  Difficulty: 700Level, Statistics and Sets Problems, Source: Math Revolution  40  Maria drove a distance without stopping such that she covered first  Difficulty: 700Level, Distance/Rate Problems, Source: Other  Please specify  41  W, X, Y, and Z represent distinct digits such that WX * YZ = 1995. Wha  Difficulty: 700Level, Number Properties, Source: Veritas Prep  42  x, y are positive integers. Find the number of even factors of 4x^2  Difficulty: 700Level, Divisibility/Multiples/Factors, Source: eGMAT  43  In a group of 80 college students, how many own a car?  Difficulty: 700Level, Overlapping Sets, Source: Magoosh  44  How many prime factors does positive integer n have?  Difficulty: 700Level, Number Properties, Source: Veritas Prep  45  If a and b are twodigit positive integers greater than 10  Difficulty: 700Level, Remainders, Source: GMAT Club Tests  46  If x, y, and z are integers, and x < y < z, is z y = y  Difficulty: 700Level, Statistics and Sets Problems, Source: Manhattan GMAT  47  If a and b are positive integers, what is the remainder when ab is  Difficulty: 700Level, Divisibility/Multiples/Factors, Number Properties, Remainders, Source: Manhattan GMAT  48  If a, b, and c are integers such that 0 < a < b < c < 10, is  Difficulty: 700Level, Divisibility/Multiples/Factors, Source: Manhattan GMAT  49  If n >2 and n^45n^2+4 = 20h, Is h an integer ?  Difficulty: 700Level, Algebra, Arithmetic, Source: Other  Please specify  50  A red box contains 7 ropes, with an average length of 60 cm per rope,  Difficulty: 700Level, Arithmetic, Min/Max Problems, Source: Other  Please specify  51  Students in a class are arranged to form groups of 4 members each  Difficulty: 700Level, Remainders, Source: Veritas Prep  52  If a, b, x, y are positive integers and a^xb^y= 144, then a + b = ?  Difficulty: 700Level, Algebra, Exponents/Powers, Source: Math Revolution  53  If pqr s is a fourdigit number, where p, q, r and s are the digits,  Difficulty: 700Level, Divisibility/Multiples/Factors, Fractions/Ratios/Decimals, Source: Other  Please specify  54  Between 1980 and 1985, Pierre’s investment portfolio increas  Difficulty: 700Level, Percent and Interest Problems, Source: Princeton Review  55  Is 2a − 3b < a − b + a − 2b  Difficulty: 700Level, Absolute Values/Modulus  56  Is x^3  6x^2 + 11x  6 < 0  Difficulty: 700Level, Inequalities  57  A drawer contains 6 socks. If two socks are randomly  Difficulty: 700Level, Probability, Source: GMATPrepNow  58  If x is positive, what is the value of x – 3 – 2x – 4 +  Difficulty: 700Level, Absolute Values/Modulus, Inequalities, Source: Manhattan GMAT  59  The area of a rectangle is 28 square centimeter. What is the perimeter  Difficulty: 700Level, Algebra, Geometry  60  a, b, and c are three integers such that a and b are less than 100, an  Difficulty: 700Level, Number Properties, Sequences  61  A three digit number A with hundreds digit a, tens digit b and units  Difficulty: 700Level, Divisibility/Multiples/Factors, Number Properties, Source: Jamboree  62  In the xycoordinate plane, line A is defined by the equation j*xy=7  Difficulty: 700Level, Coordinate Geometry, Source: GMAT Prep  63  A certain ride has 60 people standing in line awaiting admission. If  Difficulty: 700Level, Overlapping Sets, Source: Other  Please specify  64  If you are buying a product by rounding up to a $1 digit, is the sum o  Difficulty: 700Level, Algebra, Arithmetic, Percent and Interest Problems, Poor Quality, Source: Math Revolution  65  For positive integers n and m (n>m), is the average (arithmetic mean)  Difficulty: 700Level, Number Properties, Statistics and Sets Problems, Source: Math Revolution  66  In the correctlyworked multiplication problem above, each symbol repr  Difficulty: 700Level, Arithmetic, Number Properties, Source: Veritas Prep  67  Reiko drove from point A to point B at a constant speed, and  Difficulty: 700Level, Distance/Rate Problems, Source: Manhattan GMAT  68  Points A, B, C and D lie on a circle of radius 1. Let x be  Difficulty: 700Level, Geometry  69  The nth term of an increasing sequence S is given by Sn = Sn1 + Sn2  Difficulty: 700Level, Algebra, Sequences  70  Is the exact value of x/y less than 0.5?  Difficulty: 700Level, Fractions/Ratios/Decimals, Source: Economist GMAT Tutor  71  A committee of 2 people is to be formed from a group of 8  Difficulty: 700Level, Probability  72  In the xycoordinate plane, line L passes through the points (b, a) an  Difficulty: 700Level, Coordinate Geometry, Source: Manhattan GMAT  73  If a, b and c are distinct positive integers, what is the value of (a  Difficulty: 700Level, Exponents/Powers, Source: Other  Please specify  74  Set X consists of 9 positive elements. Set Y consists of the  Difficulty: 700Level, Statistics and Sets Problems  75  A certain diet program calls for eating daily calories from  Difficulty: 700Level, Word Problems, Source: GMAT Paper Tests  76  If N is a positive threedigit number that is greater than 2  Difficulty: 700Level, Fractions/Ratios/Decimals, Number Properties, Source: Manhattan GMAT  77  In a sequence of 13 consecutive integers, all of which are  Difficulty: 700Level, Divisibility/Multiples/Factors, Sequences  78  Is A + B + C even?  Difficulty: 700Level, Number Properties, Source: GMAT Club Tests  79  If x and y are negative numbers, is x<y?  Difficulty: 700Level, Inequalities, Source: GMAT Club Tests  80  If a and b are both positive integers, is b^(a+1)  ba^b odd?  Difficulty: 700Level, Algebra, Number Properties, Source: Manhattan GMAT  81  At a particular store, candy bars are normally priced at $1.  Difficulty: 700Level, Word Problems, Source: Manhattan GMAT  82  If 5a=9b=15c, what is the value of a+b+c?  Difficulty: 700Level, Algebra  83  X is a threedigit positive integer in which each digit is either 1 or  Difficulty: 700Level, Fractions/Ratios/Decimals, Remainders, Source: Manhattan GMAT  84  If 6xy = x^2*y + 9y, what is the value of xy?  Difficulty: 700Level, Algebra, Source: Manhattan GMAT  85  A certain salesman's yearly income is determined by a base salary plus  Difficulty: 700Level, Percent and Interest Problems, Word Problems, Source: Manhattan GMAT  86  A dental licensure exam requires a 75% minimum score in orde  Difficulty: 700Level, Fractions/Ratios/Decimals, Word Problems, Source: Veritas Prep  87  If x and y are integers and x < y < x, does (x^2  y^2)^(1/2) = x + y  Difficulty: 700Level, Absolute Values/Modulus, Algebra, Coordinate Geometry, Number Properties, Source: GMAT Club Tests  88  How many subordinates does Marcia have?  Difficulty: 700Level, Combinations  89  R is a convex polygon. Does R have at least 8 sides?  Difficulty: 700Level, Geometry  90  Is the integer 2b divisible by 6 ?  Difficulty: 700Level, Divisibility/Multiples/Factors  91  w, x, y and z are positive integers such that y < z < x < w.  Difficulty: 700Level, Remainders, Source: GMATPrepNow  92  If all the N students of a class are classified into groups of either  Difficulty: 700Level, Divisibility/Multiples/Factors, Number Properties, Source: eGMAT  93  If m, n, and p are threedigit integers and m + n = p  Difficulty: 700Level, Number Properties, Source: Manhattan GMAT  94  Each block from bin A is 4 inches tall, while each block from bin B is  Difficulty: 700Level, Algebra, Arithmetic, Min/Max Problems, Source: Other  Please specify  95  What is the value of (x+5)/(x+7)  Difficulty: 700Level, Absolute Values/Modulus, Algebra, Source: Other  Please specify  96  If x and y are positive integers, what is the value of x?  Difficulty: 700Level, Remainders, Source: GMATPrepNow  97  If x, y, and k are positive integers, is k < 10 ?  Difficulty: 700Level, Algebra, Exponents/Powers, Roots, Source: Princeton Review  98  If a, b and n are positive integers such that n = 3a – b3  Difficulty: 700Level, Number Properties, Source: eGMAT  99  If x and y are nonzero integers, is (x^(1) + y^(1))^(1) >  Difficulty: 700Level, Exponents/Powers, Inequalities, Source: Manhattan GMAT  100  8 schools sent a total of 96 students to a math club competition, with  Difficulty: 700Level, Min/Max Problems, Source: Veritas Prep  101  If x is a positive integer greater than 1, is x a prime numb  Difficulty: 700Level, Divisibility/Multiples/Factors, Number Properties, Source: GMAT Club Tests  102  In the figure above, SQRE is a square, AB = AC, and AS = AQ.  Difficulty: 700Level, Geometry, Source: Manhattan GMAT  103  When 3digit integer 6a3 plus 3digit integer 3b5 is divisible by 9, i  Difficulty: 700Level, Divisibility/Multiples/Factors, Source: Math Revolution  104  If x, y, and z are positive integers, and (x!+x)/z=y, then  Difficulty: 700Level, Algebra, Divisibility/Multiples/Factors, Number Properties  105  A certain floor of an office building has 1,200 square feet of floor  Difficulty: 700Level, Geometry  106  Superfast train A leaves Newcastle for Birmingham at 3 PM and travels  Difficulty: 700Level, Distance/Rate Problems, Source: Veritas Prep  107  Four friends go to Macy’s for shopping and buy a top each. Three of th  Difficulty: 700Level, Word Problems, Source: Veritas Prep  108  Is xy<0 ? (1) x^3*y^5/x*y^2 <0 (2) xy<xy  Difficulty: 700Level, Absolute Values/Modulus, Inequalities  109  A rectangle is plotted on the standard coordinate plane  Difficulty: 700Level, Coordinate Geometry, Source: Grockit  110  ax + by=10, ay + bx=12. which one is greater here, x or y ?  Difficulty: 700Level, Inequalities  111  Jeff is painting two murals on the front of an old apartment  Difficulty: 700Level, Geometry, Source: Manhattan GMAT  112  Of all the attendees at a dinner party, 40% were women. If  Difficulty: 700Level, Overlapping Sets  113  In the morning, Chris drives from Toronto to Oakville and in the eveni  Difficulty: 700Level, Distance/Rate Problems, Source: Veritas Prep  114  A circle is drawn on a coordinate plane. If a line is drawn  Difficulty: 700Level, Geometry, Source: Manhattan GMAT  115  In triangle ABC (figure shown) drawn on a coordinate plane, A, B and C  Difficulty: 700Level, Coordinate Geometry, Source: Other  Please specify  116  If x is an integer between 0 and 10 is y less than the average of x an  Difficulty: 700Level, Inequalities, Source: Other  Please specify  117  A certain fruit stand sells only apples for $0.26 each, bananas for $0  Difficulty: 700Level, Word Problems, Source: Veritas Prep  118  If x is an integer, what is the value of x?  Difficulty: 700Level, Absolute Values/Modulus, Source: GMAT Pill  119  If xy 0, is x > y? (1) 4x = 3y (2) y  x = x  y  Difficulty: 700Level, Absolute Values/Modulus, Inequalities  120  Robots K, L and M assemble components at their respective constant res  Difficulty: 700Level, Fractions/Ratios/Decimals, Inequalities, Source: Other  Please specify  121  If a number N is decreased by p percent and then the resulting value  Difficulty: 700Level, Algebra, Source: Manhattan GMAT  122  In the sequence a1,a2,…,an,…,a1=x and an=y–zan−1 for all n>1. Is a3>a2  Difficulty: 700Level, Sequences, Source: Veritas Prep  123  In the trapezoid above, with sides a, b, c, and 1, what is the value o  Difficulty: 700Level, Geometry, Source: Manhattan GMAT  124  Is product 2*x*5*y an even integer?  Difficulty: 700Level, Number Properties, Source: GMAT Club Tests  125  a, b, c, d, and e are five numbers such that a≤b≤c≤d≤e and e  Difficulty: 700Level, Statistics and Sets Problems, Source: Economist GMAT Tutor  126  If ABD is a triangle, is triangle ABC a right triangle  Difficulty: 700Level, Geometry  127  Of the 5 numbers, the largest number is 4 greater than the median. Is  Difficulty: 700Level, Statistics and Sets Problems  128  In the table above is shown the percent reduction in the  Difficulty: 700Level, Percent and Interest Problems, Word Problems, Source: Princeton Review  129  When a positive integer 'x' is divided by a divisor 'd', the remainder  Difficulty: 700Level, Divisibility/Multiples/Factors, Remainders, Source: Other  Please specify  130  What is the value of y?  Difficulty: 700Level, Algebra, Arithmetic, Roots, Source: Magoosh  131  The GMAT is scored on a scale of 200 to 800 in 10 point incr  Difficulty: 700Level, Statistics and Sets Problems, Word Problems, Source: GMAT Prep  132  A nonprofit group organizes its local fundraisers in teams,  Difficulty: 700Level, Word Problems, Source: Veritas Prep  133  If x, y, and z are positive integers, where x > y and z = √x  Difficulty: 700Level, Number Properties, Source: Kaplan  134  If m and k are nonzero integers and if y^(m+k) = y^m, what is the  Difficulty: 700Level, Exponents/Powers, Number Properties  135  If x/y > 2, is 3x + 2y < 18? (1) x  y is less than 2 (2) y  x is les  Difficulty: 700Level, Inequalities  136  If 10^a * 3^b * 5^c = 450^n, what is the value of c?  Difficulty: 700Level, Number Properties, Source: Veritas Prep  137  In a certain company, 25% of the women and 17% of the men participate  Difficulty: 700Level, Word Problems, Source: Magoosh  138  Jane can paint the wall in J hours, and Bill can paint the  Difficulty: 700Level, Word Problems, Work/Rate Problems  139  Is n/18 an integer?  Difficulty: 700Level, Divisibility/Multiples/Factors, Number Properties, Source: Manhattan GMAT  140  x is an integer and x raised to any odd integer is greater  Difficulty: 700Level, Algebra, Exponents/Powers, Source: Official Guide  141  For any integer n greater than 1, factorial denotes the product of all  Difficulty: 700Level, Number Properties, Source: eGMAT  142  Which of the two values 10^(2) and 10^(3), is x more close  Difficulty: 700Level, Arithmetic, Exponents/Powers  143  In the figure above, ABC is a right triangle with AC as its hypotenuse  Difficulty: 700Level, Geometry, Source: Manhattan GMAT  144  What is b in the circle shown above? (1) bc = 5a (2) The length of PQ  Difficulty: 700Level, Geometry, Source: Other  Please specify  145  If x, y, and z are positive integers such that x < y < z  Difficulty: 700Level, Divisibility/Multiples/Factors, Number Properties  146  If the original price of an item in a retail store is marked  Difficulty: 700Level, Percent and Interest Problems, Source: Manhattan GMAT  147  A person inherited few gold coins from his father. If he  Difficulty: 700Level, Remainders, Word Problems  148  If a, b and c are integers such that b > a, is b+c > a  Difficulty: 700Level, Geometry, Inequalities  149  If n is an integer greater than 1 is 3^n2^n divisible by 35  Difficulty: 700Level, Divisibility/Multiples/Factors, Exponents/Powers, Number Properties  150  If x and y are positive integers is y odd?  Difficulty: 700Level, Algebra, Number Properties, Source: Manhattan GMAT 
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Re: 150 Hardest and easiest questions for DS
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21 Aug 2015, 02:43
150 Easiest Data Sufficiency Questions (Oct 1st, 2018  Nov 1st, 2018) Are you familiar with the GMAT Club's timer?We have pulled timer results from our database and analyzed every question in the forum. Based on those results, we have compiled a list of the easiest questions in each of the question forums we have. Below I am presenting to you the top 150 questions from DS forum. Data Sufficiency (DS)  Rank  Title  Topics  1  What is the value of 10 percent of y?  Difficulty: Sub600 Level, Percent and Interest Problems, Source: Official Guide, Source: OG 2019, Source: OG 2018, Source: OG 2017, Source: OG 2016  2  What is the value of x ?  Difficulty: Sub600 Level, Algebra, Source: Official Guide, Source: Quant Review 2nd  3  In College X the number of students enrolled in both a  Difficulty: Sub600 Level, Overlapping Sets, Source: Official Guide, Source: OG 2017, Source: OG 2016, Source: OG 2015, Source: OG 12  4  For which type of investment, J or K, is the annual rate of  Difficulty: Sub600 Level, Percent and Interest Problems, Source: Official Guide, Source: OG 2015, Source: OG 12  5  If a certain vase contains only roses and tulips, how many tulips are  Difficulty: Sub600 Level, Word Problems, Source: Official Guide, Source: OG 2019  6  What is the number of pages of a certain journal article? The size of  Difficulty: Sub600 Level, Word Problems, Source: Official Guide, Source: OG 2019  7  The figure above represents a circle graph of Company H's total expens  Difficulty: Sub600 Level, Geometry, Graphs and Illustrations, Source: Official Guide, Source: OG 2019, Source: OG 2018, Source: OG 2017, Source: OG 2016, Source: OG 2015, Source: OG 12, Source: OG 11  8  How many basic units of currency X are equivalent to 250 basi  Difficulty: Sub600 Level, Arithmetic, Source: Official Guide, Source: OG 2019  9  The symbol R represents one of the following  Difficulty: Sub600 Level, Arithmetic, Functions and Custom Characters, Source: GMAT Hacks  10  If sequence S has 120 terms, what is the 105th term of S?  Difficulty: Sub600 Level, Sequences, Source: Official Guide, Source: OG 2019, Source: OG 2018, Source: OG 2017, Source: OG 2016  11  In the xyplane above, is angle QPR a right angle?  Difficulty: Sub600 Level, Coordinate Geometry, Geometry, Source: Official Guide, Source: OG 2018, Source: OG 2017, Source: OG 2016, Source: OG 2015  12  What is the value of w^(−2)?  Difficulty: Sub600 Level, Exponents/Powers, Source: Official Guide, Source: OG 2019, Source: OG 2018, Source: OG 2017, Source: OG 2016  13  If sequence S has 100 terms, what is the 83rd term of S?  Difficulty: Sub600 Level, Sequences, Source: Other  Please specify  14  If p and q are positive, is p/q less than 1?  Difficulty: Sub600 Level, Inequalities, Source: Official Guide, Source: Quant Review 2019, Source: Quant Review 2018, Source: Quant Review 2017  15  Carlotta can drive from her home to her office by one of two  Difficulty: Sub600 Level, Distance/Rate Problems, Source: Official Guide, Source: OG 12, Source: OG 11, Source: OG 10  16  What is the value of n?  Difficulty: Sub600 Level, Number Properties, Source: GMAT Prep  17  If p, q, x, y, and z are different positive integers, which  Difficulty: Sub600 Level, Statistics and Sets Problems, Source: Official Guide, Source: OG 10, Source: Quant Review 2019, Source: Quant Review 2018, Source: Quant Review 2017, Source: Quant Review 2nd  18  Is x = 1/y?  Difficulty: Sub600 Level, Algebra, Source: Official Guide, Source: OG 2019, Source: OG 2018, Source: OG 2017, Source: OG 2016  19  What is the value of xy?  Difficulty: Sub600 Level, Algebra, Source: Official Guide, Source: OG 10, Source: Quant Review 2019, Source: Quant Review 2018, Source: Quant Review 2017, Source: Quant Review 2nd  20  What was the median annual salary for the employees at Compan  Difficulty: Sub600 Level, Statistics and Sets Problems, Source: Official Guide, Source: OG 2019  21  Is p^2 an odd integer?  Difficulty: Sub600 Level, Number Properties, Source: Official Guide, Source: OG 10, Source: Quant Review 2nd  22  In a recent town election, what was the ratio of the number of votes  Difficulty: Sub600 Level, Word Problems, Source: Official Guide, Source: OG 2019  23  The research funds of a certain company were divided among three depar  Difficulty: Sub600 Level, Word Problems, Source: Official Guide, Source: OG 2019  24  For the system of equations given, what is the value of z?  Difficulty: Sub600 Level, Algebra, Source: Official Guide, Source: OG 2015, Source: OG 12, Source: OG 11  25  Hoses X and Y simultaneously fill an empty swimming pool tha  Difficulty: Sub600 Level, Work/Rate Problems, Source: Official Guide, Source: OG 10, Source: Quant Review 2nd  26  Each of the marbles in a jar is either red or white or blue. If one ma  Difficulty: Sub600 Level, Probability, Source: Official Guide, Source: OG 2019, Source: OG 2018, Source: OG 2017, Source: OG 2016  27  Is x between 0 and 1?  Difficulty: Sub600 Level, Inequalities, Source: GMAT Prep, Source: Quant Review 2019  28  Committee member W wants to schedule a onehour meeting on T  Difficulty: Sub600 Level, Word Problems, Source: Official Guide, Source: OG 10, Source: Quant Review 2nd  29  Is x < y?  Difficulty: Sub600 Level, Inequalities, Source: Official Guide, Source: Quant Review 2nd  30  Is rw = 0?  Difficulty: Sub600 Level, Inequalities, Source: Official Guide, Source: OG 2019, Source: OG 2018, Source: OG 2017, Source: OG 2016  31  In a certain class, some students donated cans of food to a local food  Difficulty: Sub600 Level, Word Problems, Source: Official Guide, Source: OG 2019  32  What is the value of r/2 + s/2 ?  Difficulty: Sub600 Level, Algebra, Arithmetic, Source: Official Guide, Source: OG 10, Source: Quant Review 2018, Source: Quant Review 2017, Source: Quant Review 2nd  33  What is the tenths digit of the number d when it is written as a......  Difficulty: Sub600 Level, Fractions/Ratios/Decimals, Source: Official Guide, Source: Quant Review 2018, Source: Quant Review 2017  34  What is the value of x ?  Difficulty: Sub600 Level, Algebra, Source: Official Guide, Source: Quant Review 2018, Source: Quant Review 2017  35  What is 11% of x? (1) 3/8 of x is 24 (2) 5% of x is 3.2  Difficulty: Sub600 Level, Arithmetic, Percent and Interest Problems, Source: Manhattan GMAT  36  What is the value of n in the list above?  Difficulty: Sub600 Level, Statistics and Sets Problems, Source: Official Guide, Source: OG 2019, Source: OG 2018, Source: OG 2017, Source: OG 2016, Source: OG 2015  37  How many people in a group of 50 own neither a fax machine nor a laser  Difficulty: Sub600 Level, Overlapping Sets, Source: Official Guide, Source: OG 2019, Source: OG 2018, Source: OG 2017, Source: OG 2016  38  How many of the students in a certain class are taking both a history  Difficulty: Sub600 Level, Number Properties, Word Problems, Source: GMAT Prep  39  Is x < y? (1) z < y (2) z < x  Difficulty: Sub600 Level, Inequalities, Source: GMAT Paper Tests, Source: Official Guide, Source: OG 10  40  If n is an integer, is n + 1 odd?  Difficulty: Sub600 Level, Number Properties, Source: Official Guide, Source: OG 2016, Source: OG 2015, Source: OG 12, Source: OG 11  41  How many men are in a certain company's vanpool program?  Difficulty: Sub600 Level, Word Problems, Source: Official Guide, Source: OG 2019  42  What is the product of v, w, and x?  Difficulty: Sub600 Level, Number Properties, Source: GMAT Prep EP 1  43  The number of seats in the first row of an auditorium is 18  Difficulty: Sub600 Level, Sequences, Source: Official Guide, Source: OG 2018, Source: OG 2017, Source: OG 2016, Source: OG 2015  44  What is the value of w + q ? (1) 3w=33q (2) 5w +5q = 5  Difficulty: Sub600 Level, Algebra, Source: Official Guide, Source: OG 2019, Source: OG 2018, Source: OG 2017, Source: OG 2016, Source: OG 2015  45  What is the value of z in the triangle above?  Difficulty: Sub600 Level, Geometry, Source: Official Guide, Source: OG 2015, Source: OG 12, Source: OG 11, Source: OG 10  46  A garden store purchased a number of shovels and a number of  Difficulty: Sub600 Level, Word Problems  47  Square ABCD is inscribed in circle O. What is the area of square regio  Difficulty: Sub600 Level, Geometry, Source: Official Guide, Source: OG 2019, Source: OG 2018, Source: OG 2017, Source: OG 2016  48  What is the greatest integer that is less than t?  Difficulty: Sub600 Level, Number Properties, Source: GMAT Prep  49  A circular pizza is cut into eight wedgeshaped slices of  Difficulty: Sub600 Level, Geometry, Source: Manhattan GMAT  50  For all x, the expression x* is defined to be ax + a, where a is......  Difficulty: Sub600 Level, Functions and Custom Characters, Source: Official Guide, Source: Quant Review 2019, Source: Quant Review 2018, Source: Quant Review 2017  51  Machine R and machine S work at their respective constant rates. How  Difficulty: Sub600 Level, Work/Rate Problems, Source: Official Guide, Source: OG 2019  52  If sequence S has 200 terms, what is the 192nd term of S  Difficulty: Sub600 Level, Sequences, Source: OG 12  53  What is the retail price of a certain calculator? (1) The retail pri  Difficulty: Sub600 Level, Arithmetic, Source: Manhattan GMAT  54  What was the range of the selling prices of the 30 wallets sold by a  Difficulty: Sub600 Level, Word Problems, Source: Official Guide, Source: OG 2019, Source: OG 2018, Source: OG 2017, Source: OG 2016  55  If x and y are integers, what is the value of y ?  Difficulty: Sub600 Level, Algebra, Source: Official Guide, Source: OG 10, Source: Quant Review 2017, Source: Quant Review 2nd  56  Was the amount of John's heating bill for February greater than it was  Difficulty: Sub600 Level, Word Problems, Source: Official Guide, Source: OG 2019  57  What is the value of x^3?  Difficulty: Sub600 Level, Absolute Values/Modulus, Algebra, Source: Veritas Prep  58  Water is pumped into a partially filled tank at a constant  Difficulty: Sub600 Level, Work/Rate Problems, Source: Official Guide, Source: OG 2018, Source: OG 2017, Source: OG 2016, Source: OG 2015, Source: OG 12, Source: OG 11  59  The cost of 10 pounds of apples and 2 pounds of grapes was $1  Difficulty: Sub600 Level, Algebra, Source: Official Guide, Source: OG 2019  60  In the figure above, what is the value of z?  Difficulty: Sub600 Level, Geometry, Source: Official Guide, Source: OG 2019, Source: OG 2018, Source: OG 2017  61  Is x a negative number?  Difficulty: Sub600 Level, Inequalities, Source: Official Guide, Source: OG 2015, Source: OG 12, Source: OG 11, Source: OG 10  62  What were the gross revenues from ticket sales for a certain  Difficulty: Sub600 Level, Word Problems, Source: Official Guide, Source: OG 10, Source: Quant Review 2nd  63  What is the value of t?  Difficulty: Sub600 Level, Algebra, Source: Official Guide, Source: OG 2019, Source: OG 2018, Source: OG 2017  64  Is 2x > 2y ?  Difficulty: Sub600 Level, Inequalities, Source: Official Guide, Source: Quant Review 2019, Source: Quant Review 2018, Source: Quant Review 2017  65  Does 2x + 8 = 12 ? (1) 2x + 10 = 14 (2) 3x + 8 = 14  Difficulty: Sub600 Level, Algebra, Source: Official Guide, Source: Quant Review 2019  66  If knz≠0, what is the ratio of k to n? 1) The ratio of k to z is 2 to  Difficulty: Sub600 Level, Fractions/Ratios/Decimals, Source: Math Revolution  67  A company bought 3 printers and 1 scanner. What was the price of the  Difficulty: Sub600 Level, Word Problems, Source: Official Guide, Source: OG 2019  68  In the terminating decimal equivalent of d, what is the number of nonz  Difficulty: Sub600 Level, Fractions/Ratios/Decimals, Number Properties, Source: Other  Please specify  69  Three hoses, x, y, and z, each pump water at a constant rate into a 70  Difficulty: Sub600 Level, Work/Rate Problems, Source: Other  Please specify  70  Does nm = 40?  Difficulty: Sub600 Level, Algebra, Source: GMAT Paper Tests  71  What is the value of ab + bc ? (1) b = 5 (2) a + c = 8  Difficulty: Sub600 Level, Algebra, Source: Grockit  72  Q is a cube. Find the volume of the cube.  Difficulty: Sub600 Level, Geometry, Source: Magoosh  73  In the figure above, segments PQ and PR are each parallel to one of th  Difficulty: Sub600 Level, Coordinate Geometry, Source: GMAT Prep  74  Is w + h 4 positive? 1) h is positive 2) w is positive  Difficulty: Sub600 Level, Number Properties, Source: Official Guide, Source: OG 2019, Source: OG 2018, Source: OG 2017  75  If x and y are integers, what is the value of x+y?  Difficulty: Sub600 Level, Arithmetic, Inequalities, Source: GMAT Prep  76  A circular tub has a band painted around its circumference  Difficulty: Sub600 Level, Geometry, Source: Official Guide, Source: OG 2015, Source: OG 12, Source: OG 11, Source: OG 10  77  What is the volume of a certain cube?  Difficulty: Sub600 Level, Geometry, Source: GMAT Prep  78  What is the volume of the cube above?  Difficulty: Sub600 Level, Geometry, Source: Official Guide, Source: Quant Review 2019, Source: Quant Review 2018, Source: Quant Review 2017  79  In a random sample of 80 adults, how many are college  Difficulty: Sub600 Level, Word Problems, Source: Official Guide, Source: OG 2018, Source: OG 2017, Source: OG 2016, Source: OG 2015, Source: OG 12  80  What is the volume of a certain cube?  Difficulty: Sub600 Level, Geometry  81  Is the integer p even? (1) The integer p^2 + 1 is odd. (2) The integer  Difficulty: Sub600 Level, Number Properties, Source: Official Guide, Source: Quant Review 2019  82  If machine X ran continuously at a uniform rate to fill  Difficulty: Sub600 Level, Work/Rate Problems  83  What is the value of xy ?  Difficulty: Sub600 Level, Algebra, Source: GMAT Hacks  84  Machine X runs at a constant rate and produces a lot consist  Difficulty: Sub600 Level, Work/Rate Problems, Source: Official Guide, Source: OG 10, Source: Quant Review 2nd  85  What was Bill's average speed on his trip of 250 miles from New York  Difficulty: Sub600 Level, Distance/Rate Problems, Source: Manhattan GMAT  86  The length of the edging that surrounds circular garden K is  Difficulty: Sub600 Level, Geometry, Source: Official Guide, Source: OG 2017, Source: OG 2016, Source: OG 2015, Source: OG 12, Source: OG 11  87  How many different 5person teams can be formed from a group  Difficulty: Sub600 Level, Combinations  88  Is the product of a certain pair of integers even?  Difficulty: Sub600 Level, Number Properties, Source: GMAT Prep  89  If Sara's age is exactly twice Bill's age, what is Sara's ag  Difficulty: Sub600 Level, Word Problems, Source: Official Guide, Source: OG 2015, Source: OG 12, Source: OG 11, Source: OG 10  90  What is the value of x? (1) x = 4. (2) x^2 = 16.  Difficulty: Sub600 Level, Absolute Values/Modulus, Algebra, Source: GMAT Prep EP 1  91  Each of the n employees at a certain company has a different annual sa  Difficulty: Sub600 Level, Statistics and Sets Problems, Source: Official Guide, Source: OG 2019  92  What is the radius of the circle above with center O?  Difficulty: Sub600 Level, Geometry, Source: Official Guide, Source: OG 10, Source: Quant Review 2019, Source: Quant Review 2018, Source: Quant Review 2017, Source: Quant Review 2nd  93  If i and j are integers, is i + j an even integer?  Difficulty: Sub600 Level, Number Properties, Source: Official Guide, Source: OG 2016, Source: OG 2015, Source: OG 12, Source: OG 11  94  On a companysponsored cruise, 2/3 of the passengers were  Difficulty: Sub600 Level, Word Problems, Source: Official Guide, Source: OG 2017, Source: OG 2016, Source: OG 2015, Source: OG 12, Source: OG 11  95  In PQR, if PQ = x, QR = x + 2, and PR = y, which of the  Difficulty: Sub600 Level, Geometry, Source: Official Guide, Source: OG 2015, Source: OG 12, Source: OG 11  96  In the month of June, a street vendor sold 10% more hot dogs than he  Difficulty: Sub600 Level, Percent and Interest Problems, Source: Other  Please specify  97  If on a fishing trip Jim and Tom each caught some fish, which one  Difficulty: Sub600 Level, Word Problems, Source: Official Guide, Source: OG 10  98  How long would it take Sue to paint the room?  Difficulty: Sub600 Level, Work/Rate Problems, Source: Other  Please specify  99  What is the cube root of w?  Difficulty: Sub600 Level, Roots, Source: Official Guide, Source: OG 2018, Source: OG 2017, Source: OG 2016, Source: OG 2015  100  If x is positive, what is the value of y ?  Difficulty: Sub600 Level, Algebra, Source: GMAT Prep  101  Machines X and Y run simultaneously at their respective  Difficulty: Sub600 Level, Work/Rate Problems  102  What is the value of a − b ?  Difficulty: Sub600 Level, Algebra, Source: Princeton Review  103  If the sequence S has 300 terms, what is the 293rd term of S  Difficulty: Sub600 Level, Sequences, Source: OG 2018, Source: OG 2017, Source: OG 2016, Source: OG 2015  104  How many newspapers were sold at a certain newsstand today?  Difficulty: Sub600 Level, Word Problems, Source: Official Guide, Source: OG 10, Source: Quant Review 2nd  105  If the Longfellow Playground is rectangular, what is its width?  Difficulty: Sub600 Level, Geometry, Source: Other  Please specify  106  The perimeter of a rectangular garden is 360 feet. What is t  Difficulty: Sub600 Level, Geometry, Source: Official Guide, Source: OG 10, Source: Quant Review 2nd  107  Who types at a faster rate, John or Bob?  Difficulty: Sub600 Level, Work/Rate Problems, Source: Economist GMAT Tutor  108  What is the average (arithmetic mean) of j and k ?  Difficulty: Sub600 Level, Statistics and Sets Problems, Source: Official Guide, Source: OG 2015, Source: OG 12, Source: OG 11, Source: OG 10  109  If w+ z = 28, what is the value of wz?  Difficulty: Sub600 Level, Algebra, Arithmetic, Source: Official Guide, Source: OG 10, Source: Quant Review 2018, Source: Quant Review 2017, Source: Quant Review 2nd  110  If a certain animated cartoon consists of a total of 17,280  Difficulty: Sub600 Level, Distance/Rate Problems, Source: Official Guide, Source: OG 2015, Source: OG 12, Source: OG 11, Source: OG 10  111  What amount did Jean earn from the commission on her sales  Difficulty: Sub600 Level, Word Problems, Source: Official Guide, Source: OG 2019, Source: OG 2018, Source: OG 2017, Source: OG 2016, Source: OG 2015, Source: OG 12  112  If n is a positive integer, is n odd?  Difficulty: Sub600 Level, Number Properties, Source: Official Guide, Source: OG 10  113  Point (x, y) has in which quadrant of the rectangular coordinate syste  Difficulty: Sub600 Level, Coordinate Geometry, Source: Magoosh, Source: OG 10  114  A certain investment earned a fixed rate of 4 percent interest per yea  Difficulty: Sub600 Level, Percent and Interest Problems, Source: Official Guide, Source: OG 2019, Source: OG 2018, Source: OG 2017, Source: OG 2016  115  Bob purchased 18 cans of soda, some of which contained diet soda. How  Difficulty: Sub600 Level, Word Problems, Source: Princeton Review  116  John took a test that had 60 questions numbered from 1 to 60  Difficulty: Sub600 Level, Word Problems, Source: Official Guide, Source: OG 10, Source: Quant Review 2017, Source: Quant Review 2nd  117  Is z less than 0?  Difficulty: Sub600 Level, Inequalities, Source: Official Guide, Source: Quant Review 2nd  118  If a is a 3digit integer and b is a 3digit integer, is the units  Difficulty: Sub600 Level, Fractions/Ratios/Decimals, Inequalities, Number Properties, Source: Official Guide, Source: OG 2019, Source: OG 2018  119  In PQR, if PQ = x, QR = x + 2, and PR = y, which of the  Difficulty: Sub600 Level, Geometry, Source: Official Guide, Source: OG 10  120  If n is an integer, is n  1 even?  Difficulty: Sub600 Level, Number Properties, Source: Grockit  121  If a + b + c = 12, what is the value of b? (1) a + b = 8 (2) b + c = 6  Difficulty: Sub600 Level, Algebra, Source: Official Guide, Source: OG 2019  122  On May 1 of last year, Jasmin invested x dollars in a new  Difficulty: Sub600 Level, Percent and Interest Problems, Source: GMAT Prep QP1  123  If r and s are integers, is r divisible by 7?  Difficulty: Sub600 Level, Divisibility/Multiples/Factors, Number Properties, Source: OG 10  124  If the two floors in a certain building are 9 feet apart  Difficulty: Sub600 Level, Word Problems, Source: Official Guide, Source: OG 2016, Source: OG 2015, Source: OG 12, Source: OG 11, Source: OG 10  125  Elena receives a salary plus a commission that is equal to a fixed per  Difficulty: Sub600 Level, Percent and Interest Problems, Source: Official Guide, Source: OG 10, Source: Quant Review 2nd  126  If x ≠ 0, what is the value of (x^p/x^q)^4 ?  Difficulty: Sub600 Level, Algebra, Exponents/Powers, Source: Official Guide, Source: OG 10, Source: Quant Review 2019, Source: Quant Review 2018, Source: Quant Review 2017, Source: Quant Review 2nd  127  What is the value of the integer N?  Difficulty: Sub600 Level, Inequalities, Source: Official Guide, Source: Quant Review 2019, Source: Quant Review 2018, Source: Quant Review 2017  128  How many different carpool possibilities exist for 12 coworkers from  Difficulty: Sub600 Level, Combinations, Source: Other  Please specify  129  What is the circumference of circle C ? (1) The radius of circle C is  Difficulty: Sub600 Level, Coordinate Geometry, Geometry, Source: Official Guide, Source: OG 2019  130  If S = {2, 3, x, y}, what is the value of x + y?  Difficulty: Sub600 Level, Number Properties  131  Is a even?  Difficulty: Sub600 Level, Number Properties  132  In Mr. Smith's class, what is the ratio of the number of boy  Difficulty: Sub600 Level, Fractions/Ratios/Decimals, Source: Official Guide, Source: OG 2018, Source: OG 2017, Source: OG 2016, Source: OG 2015  133  If 3 years ago Jennifer was 22 years old, how old is Carmen now?  Difficulty: Sub600 Level, Word Problems, Source: Manhattan GMAT  134  If u, v, and w are integers, is u > 0 ?  Difficulty: Sub600 Level, Algebra, Source: GMAT Prep  135  Is ax = 3  bx? (1) x(a + b) = 3 (2) a = b = 1.5 and x = 1  Difficulty: Sub600 Level, Algebra, Source: Official Guide, Source: OG 11, Source: OG 10  136  If l and w represent the length and width, respectively, of  Difficulty: Sub600 Level, Geometry, Source: Official Guide, Source: OG 10, Source: Quant Review 2nd  137  A thoroughly blended biscuit mix includes only flour and bak  Difficulty: Sub600 Level, Mixture Problems, Source: OG 11, Source: OG 10  138  If the ratio of a to b is 4 to 3 and the ratio of b to c is 1 to 5..  Difficulty: Sub600 Level, Fractions/Ratios/Decimals, Source: Kaplan  139  If M is a set of consecutive even integers, is 0 in set M ?  Difficulty: Sub600 Level, Sequences, Source: Official Guide, Source: Quant Review 2019  140  What is the average (arithmetic mean) of the first 90 measurements  Difficulty: Sub600 Level, Statistics and Sets Problems, Source: GMAT Prep EP 1  141  A citrus fruit grower receives $15 for each crate of oranges  Difficulty: Sub600 Level, Word Problems, Source: Official Guide, Source: OG 2018, Source: OG 2017, Source: OG 2016, Source: OG 2015, Source: OG 12  142  On Sunday morning, a printing press printed its newspapers at a consta  Difficulty: Sub600 Level, Work/Rate Problems, Source: Manhattan GMAT  143  What is the value of the integer p ?  Difficulty: Sub600 Level, Divisibility/Multiples/Factors, Number Properties, Source: Official Guide, Source: OG 2019, Source: OG 2018, Source: OG 2017, Source: OG 2016, Source: OG 2015  144  In the triangle above, does a^2 + b^2 = c^2 ?  Difficulty: Sub600 Level, Geometry, Source: Official Guide, Source: OG 10, Source: Quant Review 2017, Source: Quant Review 2nd  145  Three houses are being sold through a real estate agent  Difficulty: Sub600 Level, Word Problems, Source: Official Guide, Source: OG 2019, Source: OG 2018, Source: OG 2017, Source: OG 2016  146  If Pat saved $600 of his earnings last month, how much did  Difficulty: Sub600 Level, Word Problems, Source: Official Guide, Source: OG 2018, Source: OG 2017, Source: OG 2016, Source: OG 2015, Source: OG 12  147  For all integers k, the function g is defined by g(k) = ak+4, where a  Difficulty: Sub600 Level, Functions and Custom Characters, Source: Math Revolution  148  What is the remainder when the positive integer n is divided  Difficulty: Sub600 Level, Remainders, Source: GMAT Prep  149  A jar contains 30 marbles, of which 20 are red and 10 are bl  Difficulty: Sub600 Level, Probability, Source: Official Guide, Source: OG 10, Source: Quant Review 2nd  150  Luxo paint contains only alcohol and pigment. What is the ratio of  Difficulty: Sub600 Level, Mixture Problems, Source: Princeton Review 
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Collection of Questions: PS: 1. Tough and Tricky questions; 2. Hard questions; 3. Hard questions part 2; 4. Standard deviation; 5. Tough Problem Solving Questions With Solutions; 6. Probability and Combinations Questions With Solutions; 7 Tough and tricky exponents and roots questions; 8 12 Easy Pieces (or not?); 9 Bakers' Dozen; 10 Algebra set. ,11 Mixed Questions, 12 Fresh Meat DS: 1. DS tough questions; 2. DS tough questions part 2; 3. DS tough questions part 3; 4. DS Standard deviation; 5. Inequalities; 6. 700+ GMAT Data Sufficiency Questions With Explanations; 7 Tough and tricky exponents and roots questions; 8 The Discreet Charm of the DS; 9 Devil's Dozen!!!; 10 Number Properties set., 11 New DS set.
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Re: 150 Hardest and easiest questions for DS
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21 Aug 2015, 04:20



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Re: 150 Hardest and easiest questions for DS
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07 Dec 2015, 08:09
is there a dump of all these questions rather than click each link?



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Re: 150 Hardest and easiest questions for DS
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09 Jun 2017, 06:33
is there a dump of all these questions rather than click each link? Bunuel IF not can you please make one as Its very time consuming due to technical problem thanks!!



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Re: 150 Hardest and easiest questions for DS
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29 Jun 2017, 20:33
This is very helpful. Thank you very much for your efforts. You are doing a great service to those who aspire to ace GMAT. Keep up the good work.
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Re: 150 Hardest and easiest questions for DS
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29 Jun 2017, 20:57
Thanks Buñuel for your efforts.[WHITE SMILING FACE] Sent from my Moto G Play using GMAT Club Forum mobile app



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150 Hardest and easiest questions for DS
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24 Aug 2017, 20:55
Hi Bunuel , Thanks for the sharing the list of questions. Do we anywhere have the option to download all the questions in one go or we have to access them separately only. Thanks!



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24 Aug 2017, 20:58



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Re: 150 Hardest and easiest questions for DS
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29 Jan 2018, 22:02
Hi Bunuel This is extremely helpful, many thanks



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Re: 150 Hardest and easiest questions for DS
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30 May 2018, 08:57
answer choices are not showing. Could anyone let me know to view the answers.



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Re: 150 Hardest and easiest questions for DS
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30 May 2018, 21:47




Re: 150 Hardest and easiest questions for DS &nbs
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30 May 2018, 21:47






