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Joined: 02 Sep 2009
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150 Hardest and easiest questions for DS [#permalink]
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 21 Aug 2015, 03:42
150 Hardest Data Sufficiency Questions (May 1st, 2018 - Jun 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: 700-Level, Distance/Rate Problems | | 2 | In the correctly worked addition problem above, A, B, C, D | Difficulty: 700-Level, Arithmetic, Number Properties, Source: Manhattan GMAT | | 3 | What is the perimeter of PQRS ? (1) x = 30 degree | Difficulty: 700-Level, Geometry | | 4 | w, x, y, and z are integers. If w > x > y > z > 0, is y a common | Difficulty: 700-Level, Divisibility/Multiples/Factors, Number Properties, Source: Manhattan GMAT | | 5 | A car dealership carries only sedans and SUVs | Difficulty: 700-Level, 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: 700-Level, Algebra, Source: Other - Please specify | | 7 | n and k are positive integers. When n is divided by 23, the quotient i | Difficulty: 700-Level, Remainders, Source: GMATPrepNow | | 8 | If, in the addition problem above, a, b, c, d, e, f, x, y, a | Difficulty: 700-Level, Arithmetic | | 9 | If n is a prime number greater than 2, is 1/x > 1? | Difficulty: 700-Level, Inequalities, Source: Manhattan GMAT | | 10 | Right triangle ABO is drawn in the xy-plane, with OB as hypo | Difficulty: 700-Level, Geometry, Source: Manhattan GMAT | | 11 | Abe, Beth, Carl and Duncan are four siblings, among which Abe and Carl | Difficulty: 700-Level, Number Properties, Source: e-GMAT | | 12 | The cost of 3 chocolates, 5 biscuits, and 5 ice creams is | Difficulty: 700-Level, Word Problems | | 13 | Math Revolution and GMAT Club Contest! There is a sequence, 4(10^n), | Difficulty: 700-Level, Number Properties, Sequences, Source: Manhattan GMAT, Source: Math Revolution | | 14 | For integers a and b, if (a^3 a^2 b)^1/2 = 7, what is the | Difficulty: 700-Level, Algebra | | 15 | When 120 is divided by positive single-digit integer m the remainder | Difficulty: 700-Level, Absolute Values/Modulus, Divisibility/Multiples/Factors, Source: Other - Please specify | | 16 | The average (arithmetic mean) of 5 distinct, single digit integers is | Difficulty: 700-Level, Number Properties, Source: Princeton Review | | 17 | P and Q are prime numbers less than 70. What is the units digit of P*Q | Difficulty: 700-Level, Number Properties, Source: e-GMAT | | 18 | Julian bought 6 kilograms of cheese from each of Deli A and Deli B. At | Difficulty: 700-Level, Word Problems, Source: 800 Score | | 19 | If 20 Swiss Francs is enough to buy 9 notebooks and 3 | Difficulty: 700-Level, Inequalities, Word Problems | | 20 | What is b in the circle shown above? | Difficulty: 700-Level, Geometry, Source: Other - Please specify | | 21 | If x, y and z are positive integers such that x^4*y^3 = z^2 | Difficulty: 700-Level, Number Properties, Source: e-GMAT | | 22 | The Range of Set A is R. A number having equal value to R | Difficulty: 700-Level, Statistics and Sets Problems | | 23 | If h and k are both positive integers, are both roots of the equation | Difficulty: 700-Level, Algebra | | 24 | The numbers D, N, and P are positive integers, such that D < N, and N | Difficulty: 700-Level, Exponents/Powers, Number Properties, Source: Magoosh | | 25 | If x is a positive integer less than 100 such that x is | Difficulty: 700-Level, Algebra, Exponents/Powers, Source: e-GMAT | | 26 | w, x, y, and z are integers. If z > y > x > w, is |w| > x^2 | Difficulty: 700-Level, Absolute Values/Modulus, Inequalities, Source: Kaplan | | 27 | Is a - 3b an even number? | Difficulty: 700-Level, Number Properties | | 28 | At a restaurant, a group of friends ordered four main dishes | Difficulty: 700-Level, Min/Max Problems, Source: Manhattan GMAT | | 29 | In the picture, quadrilateral ABCD is a parallelogram and | Difficulty: 700-Level, Geometry | | 30 | A cube is made up of equal smaller cubes. Two of the sides | Difficulty: 700-Level, Geometry | | 31 | W, X, Y, and Z represent distinct digits such that WX * YZ = 1995. Wha | Difficulty: 700-Level, Number Properties, Source: Veritas Prep | | 32 | A natural number p, when divided by a certain divisor q, gives | Difficulty: 700-Level, Number Properties, Remainders, Source: Jamboree | | 33 | If a, b, and c are positive integers such that 1/a + 1/b = 1 | Difficulty: 700-Level, Fractions/Ratios/Decimals, Inequalities, Source: Manhattan GMAT | | 34 | Three employees, A, B and C, clean a certain conference room each day. | Difficulty: 700-Level, Work/Rate Problems, Source: Other - Please specify | | 35 | Is 1/(x-y) < y - x | Difficulty: 700-Level, Inequalities | | 36 | Students in a class are arranged to form groups of 4 members each | Difficulty: 700-Level, Remainders, Source: Veritas Prep | | 37 | A newer machine, working alone at its constant rate | Difficulty: 700-Level, Work/Rate Problems, Source: Veritas Prep | | 38 | If x, y, and z are integers, and x < y < z, is z y = y | Difficulty: 700-Level, Statistics and Sets Problems, Source: Manhattan GMAT | | 39 | In a group of 80 college students, how many own a car? | Difficulty: 700-Level, Overlapping Sets, Source: Magoosh | | 40 | How many prime factors does positive integer n have? | Difficulty: 700-Level, Number Properties, Source: Veritas Prep | | 41 | A certain ride has 60 people standing in line awaiting admission. If | Difficulty: 700-Level, Overlapping Sets, Source: Other - Please specify | | 42 | Between 1980 and 1985, Pierre’s investment portfolio increas | Difficulty: 700-Level, Percent and Interest Problems, Source: Princeton Review | | 43 | Is x^3 - 6x^2 + 11x - 6 < 0 | Difficulty: 700-Level, Inequalities | | 44 | If a and b are positive integers, what is the remainder when ab is | Difficulty: 700-Level, Divisibility/Multiples/Factors, Number Properties, Remainders, Source: Manhattan GMAT | | 45 | In the correctly-worked multiplication problem above, each symbol repr | Difficulty: 700-Level, Arithmetic, Number Properties, Source: Veritas Prep | | 46 | If a, b, and c are integers such that 0 < a < b < c < 10, is | Difficulty: 700-Level, Divisibility/Multiples/Factors, Source: Manhattan GMAT | | 47 | If x is positive, what is the value of |x – 3| – 2|x – 4| + | Difficulty: 700-Level, Absolute Values/Modulus, Inequalities, Source: Manhattan GMAT | | 48 | Is |2a − 3b| < |a − b| + |a − 2b| | Difficulty: 700-Level, Absolute Values/Modulus | | 49 | If x, y, and z are all distinct positive integers and the percent | Difficulty: 700-Level, Algebra, Number Properties, Percent and Interest Problems, Source: Manhattan GMAT | | 50 | The area of a rectangle is 28 square centimeter. What is the perimeter | Difficulty: 700-Level, Algebra, Geometry | | 51 | Is y^2 + 7y + xy even? | Difficulty: 700-Level, Divisibility/Multiples/Factors, Number Properties | | 52 | If a and b are two-digit positive integers greater than 10 | Difficulty: 700-Level, Remainders, Source: GMAT Club Tests | | 53 | A set of positive integers contains twice as many even integers as odd | Difficulty: 700-Level, Divisibility/Multiples/Factors, Number Properties, Probability | | 54 | Reiko drove from point A to point B at a constant speed, and | Difficulty: 700-Level, Distance/Rate Problems, Source: Manhattan GMAT | | 55 | If pqr s is a four-digit number, where p, q, r and s are the digits, | Difficulty: 700-Level, Divisibility/Multiples/Factors, Fractions/Ratios/Decimals, Source: Other - Please specify | | 56 | If a, b, x, y are positive integers and a^xb^y= 144, then a + b = ? | Difficulty: 700-Level, Algebra, Exponents/Powers, Source: Math Revolution | | 57 | If n >2 and n^4-5n^2+4 = 20h, Is h an integer ? | Difficulty: 700-Level, Algebra, Arithmetic, Source: Other - Please specify | | 58 | In the xy-coordinate plane, line L passes through the points (b, a) an | Difficulty: 700-Level, Coordinate Geometry, Source: Manhattan GMAT | | 59 | X is a three-digit positive integer in which each digit is either 1 or | Difficulty: 700-Level, Fractions/Ratios/Decimals, Remainders, Source: Manhattan GMAT | | 60 | Is the exact value of x/y less than 0.5? | Difficulty: 700-Level, Fractions/Ratios/Decimals, Source: Economist GMAT Tutor | | 61 | A committee of 2 people is to be formed from a group of 8 | Difficulty: 700-Level, Probability | | 62 | If x and y are negative numbers, is x<y? | Difficulty: 700-Level, Inequalities, Source: GMAT Club Tests | | 63 | If x and y are integers and -x < y < x, does (x^2 - y^2)^(1/2) = x + y | Difficulty: 700-Level, Absolute Values/Modulus, Algebra, Coordinate Geometry, Number Properties, Source: GMAT Club Tests | | 64 | The number of elements in set K is an odd number. The minimum value of | Difficulty: 700-Level, Statistics and Sets Problems, Source: Math Revolution | | 65 | If a, b and c are distinct positive integers, what is the value of (a | Difficulty: 700-Level, Exponents/Powers, Source: Other - Please specify | | 66 | R is a convex polygon. Does R have at least 8 sides? | Difficulty: 700-Level, Geometry | | 67 | x, y are positive integers. Find the number of even factors of 4x^2 | Difficulty: 700-Level, Divisibility/Multiples/Factors, Source: e-GMAT | | 68 | If you are buying a product by rounding up to a $1 digit, is the sum o | Difficulty: 700-Level, Algebra, Arithmetic, Percent and Interest Problems, Poor Quality, Source: Math Revolution | | 69 | If a and b are both positive integers, is b^(a+1) - ba^b odd? | Difficulty: 700-Level, Algebra, Number Properties, Source: Manhattan GMAT | | 70 | Is A + B + C even? | Difficulty: 700-Level, Number Properties, Source: GMAT Club Tests | | 71 | Points A, B, C and D lie on a circle of radius 1. Let x be | Difficulty: 700-Level, Geometry | | 72 | If 6xy = x^2*y + 9y, what is the value of xy? | Difficulty: 700-Level, Algebra, Source: Manhattan GMAT | | 73 | If N is a positive three-digit number that is greater than 2 | Difficulty: 700-Level, Fractions/Ratios/Decimals, Number Properties, Source: Manhattan GMAT | | 74 | Set X consists of 9 positive elements. Set Y consists of the | Difficulty: 700-Level, Statistics and Sets Problems | | 75 | How many subordinates does Marcia have? | Difficulty: 700-Level, Combinations | | 76 | At a particular store, candy bars are normally priced at $1. | Difficulty: 700-Level, Word Problems, Source: Manhattan GMAT | | 77 | If 5a=9b=15c, what is the value of a+b+c? | Difficulty: 700-Level, Algebra | | 78 | A dental licensure exam requires a 75% minimum score in orde | Difficulty: 700-Level, Fractions/Ratios/Decimals, Word Problems, Source: Veritas Prep | | 79 | In a sequence of 13 consecutive integers, all of which are | Difficulty: 700-Level, Divisibility/Multiples/Factors, Sequences | | 80 | A certain salesman's yearly income is determined by a base salary plus | Difficulty: 700-Level, Percent and Interest Problems, Word Problems, Source: Manhattan GMAT | | 81 | a, b, and c are three integers such that a and b are less than 100, an | Difficulty: 700-Level, Number Properties, Sequences | | 82 | A certain floor of an office building has 1,200 square feet of floor | Difficulty: 700-Level, Geometry | | 83 | If x and y are nonzero integers, is (x^(-1) + y^(-1))^(-1) > | Difficulty: 700-Level, Exponents/Powers, Inequalities, Source: Manhattan GMAT | | 84 | If a, b and n are positive integers such that n = 3a – b3 | Difficulty: 700-Level, Number Properties, Source: e-GMAT | | 85 | Four friends go to Macy’s for shopping and buy a top each. Three of th | Difficulty: 700-Level, Word Problems, Source: Veritas Prep | | 86 | A circle is drawn on a coordinate plane. If a line is drawn | Difficulty: 700-Level, Geometry, Source: Manhattan GMAT | | 87 | If x is a positive integer greater than 1, is x a prime numb | Difficulty: 700-Level, Divisibility/Multiples/Factors, Number Properties, Source: GMAT Club Tests | | 88 | In the figure above, SQRE is a square, AB = AC, and AS = AQ. | Difficulty: 700-Level, Geometry, Source: Manhattan GMAT | | 89 | A red box contains 7 ropes, with an average length of 60 cm per rope, | Difficulty: 700-Level, Arithmetic, Min/Max Problems, Source: Other - Please specify | | 90 | In the xy-coordinate plane, line A is defined by the equation j*x-y=-7 | Difficulty: 700-Level, Coordinate Geometry, Source: GMAT Prep | | 91 | Each block from bin A is 4 inches tall, while each block from bin B is | Difficulty: 700-Level, Algebra, Arithmetic, Min/Max Problems, Source: Other - Please specify | | 92 | A certain fruit stand sells only apples for $0.26 each, bananas for $0 | Difficulty: 700-Level, Word Problems, Source: Veritas Prep | | 93 | In the trapezoid above, with sides a, b, c, and 1, what is the value o | Difficulty: 700-Level, Geometry, Source: Manhattan GMAT | | 94 | Is the integer 2b divisible by 6 ? | Difficulty: 700-Level, Divisibility/Multiples/Factors | | 95 | If m, n, and p are three-digit integers and m + n = p | Difficulty: 700-Level, Number Properties, Source: Manhattan GMAT | | 96 | If xy 0, is x > y? (1) 4x = 3y (2) |y - x| = x - y | Difficulty: 700-Level, Absolute Values/Modulus, Inequalities | | 97 | A rectangle is plotted on the standard coordinate plane | Difficulty: 700-Level, Coordinate Geometry, Source: Grockit | | 98 | If x, y, and z are positive integers, and (x!+x)/z=y, then | Difficulty: 700-Level, Algebra, Divisibility/Multiples/Factors, Number Properties | | 99 | When 3-digit integer 6a3 plus 3-digit integer 3b5 is divisible by 9, i | Difficulty: 700-Level, Divisibility/Multiples/Factors, Source: Math Revolution | | 100 | What is the value of y? | Difficulty: 700-Level, Algebra, Arithmetic, Roots, Source: Magoosh | | 101 | Is n/18 an integer? | Difficulty: 700-Level, Divisibility/Multiples/Factors, Number Properties, Source: Manhattan GMAT | | 102 | 8 schools sent a total of 96 students to a math club competition, with | Difficulty: 700-Level, Min/Max Problems, Source: Veritas Prep | | 103 | In the sequence a1,a2,…,an,…,a1=x and an=y–zan−1 for all n>1. Is a3>a2 | Difficulty: 700-Level, Sequences, Source: Veritas Prep | | 104 | ax + by=10, ay + bx=12. which one is greater here, x or y ? | Difficulty: 700-Level, Inequalities | | 105 | A drawer contains 6 socks. If two socks are randomly | Difficulty: 700-Level, Probability, Source: GMATPrepNow | | 106 | If x and y are positive integers, what is the value of x? | Difficulty: 700-Level, Remainders, Source: GMATPrepNow | | 107 | Is xy<0 ? (1) x^3*y^5/x*y^2 <0 (2) |x|-|y|<|x-y | Difficulty: 700-Level, Absolute Values/Modulus, Inequalities | | 108 | A certain diet program calls for eating daily calories from | Difficulty: 700-Level, Word Problems, Source: GMAT Paper Tests | | 109 | When a positive integer 'x' is divided by a divisor 'd', the remainder | Difficulty: 700-Level, Divisibility/Multiples/Factors, Remainders, Source: Other - Please specify | | 110 | In the morning, Chris drives from Toronto to Oakville and in the eveni | Difficulty: 700-Level, Distance/Rate Problems, Source: Veritas Prep | | 111 | Superfast train A leaves Newcastle for Birmingham at 3 PM and travels | Difficulty: 700-Level, Distance/Rate Problems, Source: Veritas Prep | | 112 | If a number N is decreased by p percent and then the resulting value | Difficulty: 700-Level, Algebra, Source: Manhattan GMAT | | 113 | Jeff is painting two murals on the front of an old apartment | Difficulty: 700-Level, Geometry, Source: Manhattan GMAT | | 114 | a, b, c, d, and e are five numbers such that a≤b≤c≤d≤e and e | Difficulty: 700-Level, Statistics and Sets Problems, Source: Economist GMAT Tutor | | 115 | Of all the attendees at a dinner party, 40% were women. If | Difficulty: 700-Level, Overlapping Sets | | 116 | If x is an integer, what is the value of x? | Difficulty: 700-Level, Absolute Values/Modulus, Source: GMAT Pill | | 117 | If 10^a * 3^b * 5^c = 450^n, what is the value of c? | Difficulty: 700-Level, Number Properties, Source: Veritas Prep | | 118 | Of the 5 numbers, the largest number is 4 greater than the median. Is | Difficulty: 700-Level, Statistics and Sets Problems | | 119 | If x, y, and z are positive integers, where x > y and z = √x | Difficulty: 700-Level, Number Properties, Source: Kaplan | | 120 | In triangle ABC (figure shown) drawn on a coordinate plane, A, B and C | Difficulty: 700-Level, Coordinate Geometry, Source: Other - Please specify | | 121 | In the table above is shown the percent reduction in the | Difficulty: 700-Level, Percent and Interest Problems, Word Problems, Source: Princeton Review | | 122 | If x, y, and z are positive integers such that x < y < z | Difficulty: 700-Level, Divisibility/Multiples/Factors, Number Properties | | 123 | For any integer n greater than 1, factorial denotes the product of all | Difficulty: 700-Level, Number Properties, Source: e-GMAT | | 124 | Jane can paint the wall in J hours, and Bill can paint the | Difficulty: 700-Level, Word Problems, Work/Rate Problems | | 125 | If x/y > 2, is 3x + 2y < 18? (1) x - y is less than 2 (2) y - x is les | Difficulty: 700-Level, Inequalities | | 126 | In a certain company, 25% of the women and 17% of the men participate | Difficulty: 700-Level, Word Problems, Source: Magoosh | | 127 | A state legislator drafts an income tax proposal that imposes a tax of | Difficulty: 700-Level, Arithmetic, Source: Princeton Review | | 128 | w, x, y and z are positive integers. When w is divided by x, the quoti | Difficulty: 700-Level, Divisibility/Multiples/Factors, Remainders, Source: GMATPrepNow | | 129 | If a, b and c are integers such that b > a, is b+c > a | Difficulty: 700-Level, Geometry, Inequalities | | 130 | If n = x^5*y^7, where x and y are positive integers greater than 1 | Difficulty: 700-Level, Divisibility/Multiples/Factors, Number Properties, Source: GMAT Club Tests | | 131 | If x and y are positive integers is y odd? | Difficulty: 700-Level, Algebra, Number Properties, Source: Manhattan GMAT | | 132 | A nonprofit group organizes its local fundraisers in teams, | Difficulty: 700-Level, Word Problems, Source: Veritas Prep | | 133 | If x and y are positive integers, is x a prime number? | Difficulty: 700-Level, Absolute Values/Modulus, Algebra, Inequalities, Source: GMAT Club Tests | | 134 | Two positive integers a and b are divisible by 5, which is their | Difficulty: 700-Level, Number Properties, Source: e-GMAT | | 135 | If n is an integer greater than 1 is 3^n-2^n divisible by 35 | Difficulty: 700-Level, Divisibility/Multiples/Factors, Exponents/Powers, Number Properties | | 136 | Is x^2 + y^2 > 100? | Difficulty: 700-Level, Algebra, Exponents/Powers, Source: Veritas Prep | | 137 | A person inherited few gold coins from his father. If he | Difficulty: 700-Level, Remainders, Word Problems | | 138 | In the figure above, ABC is a right triangle with AC as its hypotenuse | Difficulty: 700-Level, Geometry, Source: Manhattan GMAT | | 139 | The average of a set of 7 integers equal 27. If the smallest number of | Difficulty: 700-Level, Min/Max Problems, Source: Other - Please specify | | 140 | If p, x, and y are positive integers, y is odd, and p = x^2 | Difficulty: 700-Level, Divisibility/Multiples/Factors, Number Properties, Remainders | | 141 | In quadrilateral ABCD, sides AB and BC each have length √2, | Difficulty: 700-Level, Geometry, Source: Manhattan GMAT | | 142 | A set of nonnegative integers consists of {x, x + 7, 2x, y, y + 5}. | Difficulty: 700-Level, Sequences | | 143 | Which of the two values 10^(-2) and 10^(-3), is x more close | Difficulty: 700-Level, Arithmetic, Exponents/Powers | | 144 | Is product 2*x*5*y an even integer? | Difficulty: 700-Level, Number Properties, Source: GMAT Club Tests | | 145 | What is the value of | (x+5)/(x+7) |? (1) x2 + 7x – 18 = 0 (2) 3x2 + 4 | Difficulty: 700-Level, Absolute Values/Modulus, Algebra, Source: Other - Please specify | | 146 | Two cars start moving simultaneously in different directions from poin | Difficulty: 700-Level, Distance/Rate Problems, Source: Other - Please specify | | 147 | If the original price of an item in a retail store is marked | Difficulty: 700-Level, Percent and Interest Problems, Source: Manhattan GMAT | | 148 | What is the probability of (x+3)(x+10) being div by 6? | Difficulty: 700-Level, Divisibility/Multiples/Factors, Probability, Source: Other - Please specify | | 149 | x is an integer and x raised to any odd integer is greater | Difficulty: 700-Level, Algebra, Exponents/Powers, Source: Official Guide | | 150 | If x and y are integers, does x^y * y^(-x) = 1? | Difficulty: 700-Level, Exponents/Powers, Inequalities |
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Math Expert
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Re: 150 Hardest and easiest questions for DS [#permalink]
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21 Aug 2015, 03:43
150 Easiest Data Sufficiency Questions (May 1st, 2018 - Jun 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: Sub-600 Level, Percent and Interest Problems, Source: Official Guide | | 2 | What is the value of x ? | Difficulty: Sub-600 Level, Algebra, Source: Official Guide | | 3 | In College X the number of students enrolled in both a | Difficulty: Sub-600 Level, Overlapping Sets, Source: Official Guide | | 4 | For which type of investment, J or K, is the annual rate of | Difficulty: Sub-600 Level, Percent and Interest Problems, Source: Official Guide | | 5 | What is the value of w^(−2)? | Difficulty: Sub-600 Level, Exponents/Powers, Source: Official Guide | | 6 | The figure above represents a circle graph of Company H's total expens | Difficulty: Sub-600 Level, Geometry, Graphs and Illustrations, Source: Official Guide | | 7 | In the xy-plane above, is angle QPR a right angle? | Difficulty: Sub-600 Level, Coordinate Geometry, Geometry, Source: Official Guide | | 8 | If sequence S has 120 terms, what is the 105th term of S? | Difficulty: Sub-600 Level, Sequences, Source: Official Guide | | 9 | Is x = 1/y? | Difficulty: Sub-600 Level, Algebra, Source: Official Guide | | 10 | Is p^2 an odd integer? | Difficulty: Sub-600 Level, Number Properties, Source: Official Guide | | 11 | Carlotta can drive from her home to her office by one of two | Difficulty: Sub-600 Level, Distance/Rate Problems, Source: Official Guide | | 12 | Is x between 0 and 1? | Difficulty: Sub-600 Level, Inequalities, Source: GMAT Prep | | 13 | For the system of equations given, what is the value of z? | Difficulty: Sub-600 Level, Algebra, Source: Official Guide | | 14 | Hoses X and Y simultaneously fill an empty swimming pool tha | Difficulty: Sub-600 Level, Work/Rate Problems, Source: Official Guide | | 15 | Committee member W wants to schedule a one-hour meeting on T | Difficulty: Sub-600 Level, Word Problems, Source: Official Guide | | 16 | What is the value of r/2 + s/2 ? | Difficulty: Sub-600 Level, Algebra, Arithmetic, Source: Official Guide | | 17 | If p, q, x, y, and z are different positive integers, which | Difficulty: Sub-600 Level, Statistics and Sets Problems, Source: Official Guide | | 18 | What is the value of n in the list above? | Difficulty: Sub-600 Level, Statistics and Sets Problems, Source: Official Guide | | 19 | What is the value of xy? | Difficulty: Sub-600 Level, Algebra, Source: Official Guide | | 20 | What is the value of n? | Difficulty: Sub-600 Level, Number Properties, Source: GMAT Prep | | 21 | Is rw = 0? | Difficulty: Sub-600 Level, Inequalities, Source: Official Guide | | 22 | If sequence S has 100 terms, what is the 83rd term of S? | Difficulty: Sub-600 Level, Sequences, Source: Other - Please specify | | 23 | The symbol R represents one of the following | Difficulty: Sub-600 Level, Arithmetic, Functions and Custom Characters, Source: GMAT Hacks | | 24 | What is 11% of x? (1) 3/8 of x is 24 (2) 5% of x is 3.2 | Difficulty: Sub-600 Level, Arithmetic, Percent and Interest Problems, Source: Manhattan GMAT | | 25 | Is x < y? | Difficulty: Sub-600 Level, Inequalities, Source: Official Guide | | 26 | If n is an integer, is n + 1 odd? | Difficulty: Sub-600 Level, Number Properties, Source: Official Guide | | 27 | Each of the marbles in a jar is either red or white or blue. If one ma | Difficulty: Sub-600 Level, Probability, Source: Official Guide | | 28 | The number of seats in the first row of an auditorium is 18 | Difficulty: Sub-600 Level, Sequences, Source: Official Guide | | 29 | What is the value of z in the triangle above? | Difficulty: Sub-600 Level, Geometry, Source: Official Guide | | 30 | What is the value of x ? | Difficulty: Sub-600 Level, Algebra, Source: Official Guide | | 31 | Is x < y? (1) z < y (2) z < x | Difficulty: Sub-600 Level, Inequalities, Source: GMAT Paper Tests, Source: Official Guide | | 32 | How many people in a group of 50 own neither a fax machine nor a laser | Difficulty: Sub-600 Level, Overlapping Sets, Source: Official Guide | | 33 | For all x, the expression x* is defined to be ax + a, where a is...... | Difficulty: Sub-600 Level, Functions and Custom Characters, Source: Official Guide | | 34 | A garden store purchased a number of shovels and a number of | Difficulty: Sub-600 Level, Word Problems | | 35 | What is the value of w + q ? (1) 3w=3-3q (2) 5w +5q = 5 | Difficulty: Sub-600 Level, Algebra, Source: Official Guide | | 36 | What is the tenths digit of the number d when it is written as a...... | Difficulty: Sub-600 Level, Fractions/Ratios/Decimals, Source: Official Guide | | 37 | A circular pizza is cut into eight wedge-shaped slices of | Difficulty: Sub-600 Level, Geometry, Source: Manhattan GMAT | | 38 | If sequence S has 200 terms, what is the 192nd term of S | Difficulty: Sub-600 Level, Sequences, Source: Official Guide | | 39 | What is the product of v, w, and x? | Difficulty: Sub-600 Level, Number Properties, Source: GMAT Prep EP 1 | | 40 | Square ABCD is inscribed in circle O. What is the area of square regio | Difficulty: Sub-600 Level, Geometry, Source: Official Guide | | 41 | If p and q are positive, is p/q less than 1? | Difficulty: Sub-600 Level, Inequalities, Source: Official Guide | | 42 | Is x a negative number? | Difficulty: Sub-600 Level, Inequalities, Source: Official Guide | | 43 | Water is pumped into a partially filled tank at a constant | Difficulty: Sub-600 Level, Work/Rate Problems, Source: Official Guide | | 44 | In the terminating decimal equivalent of d, what is the number of nonz | Difficulty: Sub-600 Level, Fractions/Ratios/Decimals, Number Properties, Source: Other - Please specify | | 45 | If x and y are integers, what is the value of y ? | Difficulty: Sub-600 Level, Algebra, Source: Official Guide | | 46 | In the figure above, what is the value of z? | Difficulty: Sub-600 Level, Geometry, Source: Official Guide | | 47 | What is the greatest integer that is less than t? | Difficulty: Sub-600 Level, Number Properties, Source: GMAT Prep | | 48 | What were the gross revenues from ticket sales for a certain | Difficulty: Sub-600 Level, Word Problems, Source: Official Guide | | 49 | What was the range of the selling prices of the 30 wallets sold by a | Difficulty: Sub-600 Level, Word Problems, Source: Official Guide | | 50 | Does nm = 40? | Difficulty: Sub-600 Level, Algebra, Source: GMAT Paper Tests | | 51 | How many of the students in a certain class are taking both a history | Difficulty: Sub-600 Level, Number Properties, Word Problems, Source: GMAT Prep | | 52 | What is the value of t? | Difficulty: Sub-600 Level, Algebra, Source: Official Guide | | 53 | Is w + h 4 positive? 1) h is positive 2) w is positive | Difficulty: Sub-600 Level, Number Properties, Source: Official Guide | | 54 | What is the value of x^3? | Difficulty: Sub-600 Level, Absolute Values/Modulus, Algebra, Source: Veritas Prep | | 55 | A circular tub has a band painted around its circumference | Difficulty: Sub-600 Level, Geometry, Source: Official Guide | | 56 | Is the product of a certain pair of integers even? | Difficulty: Sub-600 Level, Number Properties, Source: GMAT Prep | | 57 | What is the retail price of a certain calculator? (1) The retail pri | Difficulty: Sub-600 Level, Arithmetic, Source: Manhattan GMAT | | 58 | In a random sample of 80 adults, how many are college | Difficulty: Sub-600 Level, Word Problems, Source: Official Guide | | 59 | If knz≠0, what is the ratio of k to n? 1) The ratio of k to z is 2 to | Difficulty: Sub-600 Level, Fractions/Ratios/Decimals, Source: Math Revolution | | 60 | Is 2x > 2y ? | Difficulty: Sub-600 Level, Inequalities, Source: Official Guide | | 61 | If Sara's age is exactly twice Bill's age, what is Sara's ag | Difficulty: Sub-600 Level, Word Problems, Source: Official Guide | | 62 | Machine X runs at a constant rate and produces a lot consist | Difficulty: Sub-600 Level, Work/Rate Problems, Source: Official Guide | | 63 | If on a fishing trip Jim and Tom each caught some fish, which one | Difficulty: Sub-600 Level, Word Problems, Source: Official Guide | | 64 | How many different 5-person teams can be formed from a group | Difficulty: Sub-600 Level, Combinations | | 65 | In PQR, if PQ = x, QR = x + 2, and PR = y, which of the | Difficulty: Sub-600 Level, Geometry, Source: Official Guide | | 66 | If i and j are integers, is i + j an even integer? | Difficulty: Sub-600 Level, Number Properties, Source: Official Guide | | 67 | On a company-sponsored cruise, 2/3 of the passengers were | Difficulty: Sub-600 Level, Word Problems, Source: Official Guide | | 68 | What is the measure of angle YQZ in the figure? | Difficulty: Sub-600 Level, Geometry, Source: Grockit | | 69 | What is the radius of the circle above with center O? | Difficulty: Sub-600 Level, Geometry, Source: Official Guide | | 70 | If x and y are integers, what is the value of x+y? | Difficulty: Sub-600 Level, Arithmetic, Inequalities, Source: GMAT Prep | | 71 | What is the value of x – y ? | Difficulty: Sub-600 Level, Algebra, Source: Princeton Review | | 72 | The length of the edging that surrounds circular garden K is | Difficulty: Sub-600 Level, Geometry, Source: Official Guide | | 73 | What amount did Jean earn from the commission on her sales | Difficulty: Sub-600 Level, Word Problems, Source: Official Guide | | 74 | What is the volume of a certain cube? | Difficulty: Sub-600 Level, Geometry | | 75 | What is the value of x? (1) |x| = 4. (2) x^2 = 16. | Difficulty: Sub-600 Level, Absolute Values/Modulus, Algebra, Source: GMAT Prep EP 1 | | 76 | What is the value of ab + bc ? (1) b = 5 (2) a + c = 8 | Difficulty: Sub-600 Level, Algebra, Source: Grockit | | 77 | What was Bill's average speed on his trip of 250 miles from New York | Difficulty: Sub-600 Level, Distance/Rate Problems, Source: Manhattan GMAT | | 78 | If machine X ran continuously at a uniform rate to fill | Difficulty: Sub-600 Level, Work/Rate Problems | | 79 | What is the value of a − b ? | Difficulty: Sub-600 Level, Algebra, Source: Princeton Review | | 80 | What is the cube root of w? | Difficulty: Sub-600 Level, Roots, Source: Official Guide | | 81 | In PQR, if PQ = x, QR = x + 2, and PR = y, which of the | Difficulty: Sub-600 Level, Geometry, Source: Official Guide | | 82 | If the sequence S has 300 terms, what is the 293rd term of S | Difficulty: Sub-600 Level, Sequences, Source: Official Guide | | 83 | If the Longfellow Playground is rectangular, what is its width? | Difficulty: Sub-600 Level, Geometry, Source: Other - Please specify | | 84 | How long would it take Sue to paint the room? | Difficulty: Sub-600 Level, Work/Rate Problems, Source: Other - Please specify | | 85 | Bob purchased 18 cans of soda, some of which contained diet soda. How | Difficulty: Sub-600 Level, Word Problems, Source: Princeton Review | | 86 | What is the volume of the cube above? | Difficulty: Sub-600 Level, Geometry, Source: Official Guide | | 87 | The perimeter of a rectangular garden is 360 feet. What is t | Difficulty: Sub-600 Level, Geometry, Source: Official Guide | | 88 | What is the volume of a certain cube? | Difficulty: Sub-600 Level, Geometry, Source: GMAT Prep | | 89 | What is the average (arithmetic mean) of j and k ? | Difficulty: Sub-600 Level, Statistics and Sets Problems, Source: Official Guide | | 90 | Machines X and Y run simultaneously at their respective | Difficulty: Sub-600 Level, Work/Rate Problems | | 91 | Is z less than 0? | Difficulty: Sub-600 Level, Inequalities, Source: Official Guide | | 92 | How many newspapers were sold at a certain newsstand today? | Difficulty: Sub-600 Level, Word Problems, Source: Official Guide | | 93 | Q is a cube. Find the volume of the cube. | Difficulty: Sub-600 Level, Geometry, Source: Magoosh | | 94 | In Mr. Smith's class, what is the ratio of the number of boy | Difficulty: Sub-600 Level, Fractions/Ratios/Decimals, Source: Official Guide | | 95 | What is the value of x^2 - y^2 ? | Difficulty: Sub-600 Level, Algebra, Source: Official Guide | | 96 | If n is a positive integer, is n odd? | Difficulty: Sub-600 Level, Number Properties, Source: Official Guide | | 97 | In the month of June, a street vendor sold 10% more hot dogs than he | Difficulty: Sub-600 Level, Percent and Interest Problems, Source: Other - Please specify | | 98 | Is a even? | Difficulty: Sub-600 Level, Number Properties | | 99 | A certain investment earned a fixed rate of 4 percent interest per yea | Difficulty: Sub-600 Level, Percent and Interest Problems, Source: Official Guide | | 100 | How many different carpool possibilities exist for 12 coworkers from | Difficulty: Sub-600 Level, Combinations, Source: Other - Please specify | | 101 | If S = {2, 3, x, y}, what is the value of x + y? | Difficulty: Sub-600 Level, Number Properties | | 102 | If the two floors in a certain building are 9 feet apart | Difficulty: Sub-600 Level, Word Problems, Source: Official Guide | | 103 | If a certain animated cartoon consists of a total of 17,280 | Difficulty: Sub-600 Level, Distance/Rate Problems, Source: Official Guide | | 104 | What is the value of xy ? | Difficulty: Sub-600 Level, Algebra, Source: GMAT Hacks | | 105 | John took a test that had 60 questions numbered from 1 to 60 | Difficulty: Sub-600 Level, Word Problems, Source: Official Guide | | 106 | If w+ z = 28, what is the value of wz? | Difficulty: Sub-600 Level, Algebra, Arithmetic, Source: Official Guide | | 107 | Elena receives a salary plus a commission that is equal to a | Difficulty: Sub-600 Level, Percent and Interest Problems, Source: Official Guide | | 108 | Who types at a faster rate, John or Bob? | Difficulty: Sub-600 Level, Work/Rate Problems, Source: Economist GMAT Tutor | | 109 | In the figure above, segments PQ and PR are each parallel to one of th | Difficulty: Sub-600 Level, Coordinate Geometry, Source: GMAT Prep | | 110 | If t denotes the thousandths digit in the decimal | Difficulty: Sub-600 Level, Arithmetic, Fractions/Ratios/Decimals, Source: Official Guide | | 111 | The total amount that John paid at a certain restaurant | Difficulty: Sub-600 Level, Percent and Interest Problems, Source: GMAT Prep QP1 | | 112 | Three hoses, x, y, and z, each pump water at a constant rate into a 70 | Difficulty: Sub-600 Level, Work/Rate Problems, Source: Other - Please specify | | 113 | What was the amount of money donated to a certain charity? | Difficulty: Sub-600 Level, Arithmetic, Percent and Interest Problems, Source: Official Guide | | 114 | If x ≠ 0, what is the value of (x^p/x^q)^4 ? | Difficulty: Sub-600 Level, Algebra, Exponents/Powers, Source: Official Guide | | 115 | If r and s are integers, is r divisible by 7? | Difficulty: Sub-600 Level, Divisibility/Multiples/Factors, Number Properties | | 116 | On Sunday morning, a printing press printed its newspapers at a consta | Difficulty: Sub-600 Level, Work/Rate Problems, Source: Manhattan GMAT | | 117 | Point (x, y) has in which quadrant of the rectangular coordinate syste | Difficulty: Sub-600 Level, Coordinate Geometry, Source: Other - Please specify | | 118 | In a certain factory, hours worked by each employee in excess of 40... | Difficulty: Sub-600 Level, Word Problems, Source: Official Guide | | 119 | If l and w represent the length and width, respectively, of | Difficulty: Sub-600 Level, Geometry, Source: Official Guide | | 120 | A thoroughly blended biscuit mix includes only flour and bak | Difficulty: Sub-600 Level, Mixture Problems | | 121 | If a is a 3-digit integer and b is a 3-digit integer, is the units | Difficulty: Sub-600 Level, Fractions/Ratios/Decimals, Inequalities, Number Properties, Source: Official Guide | | 122 | On May 1 of last year, Jasmin invested x dollars in a new | Difficulty: Sub-600 Level, Percent and Interest Problems, Source: GMAT Prep QP1 | | 123 | Three houses are being sold through a real estate agent | Difficulty: Sub-600 Level, Word Problems, Source: Official Guide | | 124 | A citrus fruit grower receives $15 for each crate of oranges | Difficulty: Sub-600 Level, Word Problems, Source: Official Guide | | 125 | What is the value of the integer p ? | Difficulty: Sub-600 Level, Divisibility/Multiples/Factors, Number Properties, Source: Official Guide | | 126 | If A and B are positive integers, is the product AB even? | Difficulty: Sub-600 Level, Number Properties, Source: Official Guide | | 127 | What is the value of b + c ? | Difficulty: Sub-600 Level, Algebra, Source: Official Guide | | 128 | Is ax = 3 - bx? (1) x(a + b) = 3 (2) a = b = 1.5 and x = 1 | Difficulty: Sub-600 Level, Algebra, Source: Official Guide | | 129 | For all integers k, the function g is defined by g(k) = ak+4, where a | Difficulty: Sub-600 Level, Functions and Custom Characters, Source: Math Revolution | | 130 | Does the decimal equivalent of P/Q, where P and Q are | Difficulty: Sub-600 Level, Fractions/Ratios/Decimals | | 131 | What percent of a group of people are women with red hair? | Difficulty: Sub-600 Level, Overlapping Sets, Source: Official Guide | | 132 | In the triangle above, does a^2 + b^2 = c^2 ? | Difficulty: Sub-600 Level, Geometry, Source: Official Guide | | 133 | What is the average (arithmetic mean) of the first 90 measurements | Difficulty: Sub-600 Level, Statistics and Sets Problems, Source: GMAT Prep EP 1 | | 134 | A jar contains 30 marbles, of which 20 are red and 10 are bl | Difficulty: Sub-600 Level, Probability, Source: Official Guide | | 135 | Marcia's bucket can hold a maximum of how many liters of wat | Difficulty: Sub-600 Level, Word Problems, Source: Official Guide | | 136 | If m/n = 5/3, what is the value of m + n ? | Difficulty: Sub-600 Level, Algebra, Source: Official Guide | | 137 | What is the area of square ABCD? | Difficulty: Sub-600 Level, Geometry, Source: Veritas Prep | | 138 | If u, v, and w are integers, is u > 0 ? | Difficulty: Sub-600 Level, Algebra, Source: GMAT Prep | | 139 | What is the remainder when the positive integer n is divided | Difficulty: Sub-600 Level, Remainders, Source: GMAT Prep | | 140 | If P and Q are each circular regions, what is the radius of | Difficulty: Sub-600 Level, Geometry, Source: Official Guide | | 141 | If the ratio of a to b is 4 to 3 and the ratio of b to c is 1 to 5.. | Difficulty: Sub-600 Level, Fractions/Ratios/Decimals, Source: Kaplan | | 142 | If Pat saved $600 of his earnings last month, how much did | Difficulty: Sub-600 Level, Word Problems, Source: Official Guide | | 143 | If x is an integer, is x|x|<2^x ? | Difficulty: Sub-600 Level, Absolute Values/Modulus, Algebra, Inequalities, Source: Official Guide | | 144 | If d is a positive integer, is d^1/2 an integer? | Difficulty: Sub-600 Level, Number Properties, Source: Official Guide | | 145 | Cyclist A leaves point X at 12 noon and travels at constant velocity | Difficulty: Sub-600 Level, Work/Rate Problems, Source: Other - Please specify | | 146 | What is the average (arithmetic mean) of x and y? | Difficulty: Sub-600 Level, Statistics and Sets Problems, Source: Official Guide | | 147 | x-y=? | Difficulty: Sub-600 Level, Absolute Values/Modulus, Algebra, Source: Math Revolution | | 148 | If n is an integer, is n - 1 even? | Difficulty: Sub-600 Level, Number Properties, Source: Grockit | | 149 | If none of the students are ambidextrous, what percentage of | Difficulty: Sub-600 Level, Overlapping Sets, Source: Manhattan GMAT | | 150 | At a certain restaurant, if each hamburger costs the same am | Difficulty: Sub-600 Level, Word Problems, Source: GMAT Prep |
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Math Expert
Joined: 02 Sep 2009
Posts: 46207
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Re: 150 Hardest and easiest questions for DS [#permalink]
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21 Aug 2015, 05:20
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Intern
Joined: 29 Aug 2015
Posts: 8
Concentration: Strategy, Technology
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Re: 150 Hardest and easiest questions for DS [#permalink]
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07 Dec 2015, 09:09
is there a dump of all these questions rather than click each link?
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Joined: 12 Sep 2016
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Re: 150 Hardest and easiest questions for DS [#permalink]
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09 Jun 2017, 07:33
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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Joined: 20 May 2017
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Re: 150 Hardest and easiest questions for DS [#permalink]
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29 Jun 2017, 21:33
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.
Posted from my mobile device
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Joined: 31 Dec 2012
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Re: 150 Hardest and easiest questions for DS [#permalink]
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29 Jun 2017, 21:57
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 [#permalink]
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24 Aug 2017, 21:55
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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Math Expert
Joined: 02 Sep 2009
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Re: 150 Hardest and easiest questions for DS [#permalink]
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24 Aug 2017, 21:58
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Intern
Joined: 29 Jan 2018
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Re: 150 Hardest and easiest questions for DS [#permalink]
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29 Jan 2018, 23:02
Hi Bunuel This is extremely helpful, many thanks 
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Joined: 30 May 2018
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Re: 150 Hardest and easiest questions for DS [#permalink]
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30 May 2018, 09:57
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 [#permalink]
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30 May 2018, 22:47
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Re: 150 Hardest and easiest questions for DS
[#permalink]
30 May 2018, 22:47
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close
