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150 Hardest and easiest questions for DS

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150 Hardest and easiest questions for DS [#permalink]

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150 Hardest Data Sufficiency Questions (Nov 1st, 2017 - Dec 1st, 2017)

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)
RankTitleTopics
1Train A leaves New York for Boston at 3 PM and travels at Difficulty: 700-Level, Distance/Rate Problems
2What is the perimeter of PQRS ? (1) x = 30 degree Difficulty: 700-Level, Geometry
3w, 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
4A car dealership carries only sedans and SUVs Difficulty: 700-Level, Percent and Interest Problems, Word Problems, Source: Veritas Prep
5In the correctly worked addition problem above, A, B, C, D Difficulty: 700-Level, Arithmetic, Number Properties, Source: Manhattan GMAT
6n and k are positive integers. When n is divided by 23, the quotient i Difficulty: 700-Level, Remainders, Source: GMATPrepNow
7If k is an integer and x(x – k) = k + 1, what is the value of x? Difficulty: 700-Level, Algebra, Source: Other - Please specify
8If, in the addition problem above, a, b, c, d, e, f, x, y, a Difficulty: 700-Level, Arithmetic
9If n is a prime number greater than 2, is 1/x > 1? Difficulty: 700-Level, Inequalities, Source: Manhattan GMAT
10What is b in the circle shown above? Difficulty: 700-Level, Geometry, Source: Other - Please specify
11If x is a positive integer less than 100 such that x is Difficulty: 700-Level, Algebra, Exponents/Powers, Source: e-GMAT
12P and Q are prime numbers less than 70. What is the units digit of P*Q Difficulty: 700-Level, Number Properties, Source: e-GMAT
13For integers a and b, if (a^3 a^2 b)^1/2 = 7, what is the Difficulty: 700-Level, Algebra
14The cost of 3 chocolates, 5 biscuits, and 5 ice creams is Difficulty: 700-Level, Word Problems
15The average (arithmetic mean) of 5 distinct, single digit integers is Difficulty: 700-Level, Number Properties, Source: Princeton Review
16Right triangle ABO is drawn in the xy-plane, with OB as hypo Difficulty: 700-Level, Geometry, Source: Manhattan GMAT
17Math Revolution and GMAT Club Contest! There is a sequence, 4(10^n), Difficulty: 700-Level, Number Properties, Sequences, Source: Manhattan GMAT, Source: Math Revolution
18Abe, Beth, Carl and Duncan are four siblings, among which Abe and Carl Difficulty: 700-Level, Number Properties, Source: e-GMAT
19Julian bought 6 kilograms of cheese from each of Deli A and Deli B. At Difficulty: 700-Level, Word Problems, Source: 800 Score
20If 20 Swiss Francs is enough to buy 9 notebooks and 3 Difficulty: 700-Level, Inequalities, Word Problems
21When 120 is divided by single-digit integer m the remainder is Difficulty: 700-Level, Absolute Values/Modulus, Divisibility/Multiples/Factors, Source: Other - Please specify
22If x, y and z are positive integers such that x^4*y^3 = z^2 Difficulty: 700-Level, Number Properties, Source: e-GMAT
23If h and k are both positive integers, are both roots of the equation Difficulty: 700-Level, Algebra
24w, x, y, and z are integers. If z > y > x > w, is |w| > x^2 Difficulty: 700-Level, Absolute Values/Modulus, Inequalities, Source: Kaplan
25The Range of Set A is R. A number having equal value to R Difficulty: 700-Level, Statistics and Sets Problems
26In the picture, quadrilateral ABCD is a parallelogram and Difficulty: 700-Level, Geometry
27At a restaurant, a group of friends ordered four main dishes Difficulty: 700-Level, Min/Max Problems, Source: Manhattan GMAT
28Students in a class are arranged to form groups of 4 members each Difficulty: 700-Level, Remainders, Source: Veritas Prep
29If a, b, and c are positive integers such that 1/a + 1/b = 1 Difficulty: 700-Level, Fractions/Ratios/Decimals, Inequalities, Source: Manhattan GMAT
30If x, y, and z are integers, and x < y < z, is z y = y Difficulty: 700-Level, Statistics and Sets Problems, Source: Manhattan GMAT
31A cube is made up of equal smaller cubes. Two of the sides Difficulty: 700-Level, Geometry
32A newer machine, working alone at its constant rate Difficulty: 700-Level, Work/Rate Problems, Source: Veritas Prep
33Is a - 3b an even number? Difficulty: 700-Level, Number Properties
34Is 1/(x-y) < y - x Difficulty: 700-Level, Inequalities
35x, y are positive integers. Find the number of even factors of 4x^2 Difficulty: 700-Level, Divisibility/Multiples/Factors, Source: e-GMAT
36If a, b, x, y are positive integers and a^xb^y= 144, then a + b = ? Difficulty: 700-Level, Algebra, Exponents/Powers, Source: Math Revolution
37Three employees, A, B and C, clean a certain conference room each day. Difficulty: 700-Level, Work/Rate Problems, Source: Other - Please specify
38W, X, Y, and Z represent distinct digits such that WX * YZ = 1995. Wha Difficulty: 700-Level, Number Properties, Source: Veritas Prep
39Between 1980 and 1985, Pierre’s investment portfolio increas Difficulty: 700-Level, Percent and Interest Problems, Source: Princeton Review
40If 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
41In a group of 80 college students, how many own a car? Difficulty: 700-Level, Overlapping Sets, Source: Magoosh
42If x is positive, what is the value of |x – 3| – 2|x – 4| + Difficulty: 700-Level, Absolute Values/Modulus, Inequalities, Source: Manhattan GMAT
43If 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
44Is |2a − 3b| < |a − b| + |a − 2b| Difficulty: 700-Level, Absolute Values/Modulus
45Is the exact value of x/y less than 0.5? Difficulty: 700-Level, Fractions/Ratios/Decimals, Source: Economist GMAT Tutor
46Is x^3 - 6x^2 + 11x - 6 < 0 Difficulty: 700-Level, Inequalities
47Is y^2 + 7y + xy even? Difficulty: 700-Level, Divisibility/Multiples/Factors, Number Properties
48If 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
49In the correctly-worked multiplication problem above, each symbol repr Difficulty: 700-Level, Arithmetic, Source: Veritas Prep
50If a, b, and c are integers such that 0 < a < b < c < 10, is Difficulty: 700-Level, Divisibility/Multiples/Factors, Source: Manhattan GMAT
51Reiko drove from point A to point B at a constant speed, and Difficulty: 700-Level, Distance/Rate Problems, Source: Manhattan GMAT
52The area of a rectangle is 28 square centimeter. What is the perimeter Difficulty: 700-Level, Algebra, Geometry
53If x and y are negative numbers, is x<y? Difficulty: 700-Level, Inequalities, Source: GMAT Club Tests
54A certain ride has 60 people standing in line awaiting admission. If Difficulty: 700-Level, Overlapping Sets, Source: Other - Please specify
55In the xy-coordinate plane, line L passes through the points (b, a) an Difficulty: 700-Level, Coordinate Geometry, Source: Manhattan GMAT
56A set of positive integers contains twice as many even integers as odd Difficulty: 700-Level, Divisibility/Multiples/Factors, Number Properties, Probability
57If x, y, and z are positive integers, and (x!+x)/z=y, then Difficulty: 700-Level, Algebra, Divisibility/Multiples/Factors, Number Properties
58If a and b are two-digit positive integers greater than 10 Difficulty: 700-Level, Remainders, Source: GMAT Club Tests
59A committee of 2 people is to be formed from a group of 8 Difficulty: 700-Level, Probability
60If 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
61The numbers D, N, and P are positive integers, such that D < N, and N Difficulty: 700-Level, Exponents/Powers, Number Properties, Source: Magoosh
62A certain floor of an office building has 1,200 square feet of floor Difficulty: 700-Level, Geometry
63If x and y are positive integers, what is the value of x? Difficulty: 700-Level, Remainders, Source: GMATPrepNow
64Points A, B, C and D lie on a circle of radius 1. Let x be Difficulty: 700-Level, Geometry
65The number of elements in set K is an odd number. The minimum value of Difficulty: 700-Level, Statistics and Sets Problems, Source: Math Revolution
66If a and b are both positive integers, is b^(a+1) - ba^b odd? Difficulty: 700-Level, Algebra, Number Properties, Source: Manhattan GMAT
67A certain salesman's yearly income is determined by a base salary plus Difficulty: 700-Level, Percent and Interest Problems, Word Problems, Source: Manhattan GMAT
68R is a convex polygon. Does R have at least 8 sides? Difficulty: 700-Level, Geometry
69If 6xy = x^2*y + 9y, what is the value of xy? Difficulty: 700-Level, Algebra, Source: Manhattan GMAT
70If 5a=9b=15c, what is the value of a+b+c? Difficulty: 700-Level, Algebra
71How many subordinates does Marcia have? Difficulty: 700-Level, Combinations
72Is A + B + C even? Difficulty: 700-Level, Number Properties
73Is the integer 2b divisible by 6 ? Difficulty: 700-Level, Divisibility/Multiples/Factors
74Set X consists of 9 positive elements. Set Y consists of the Difficulty: 700-Level, Statistics and Sets Problems
75If m, n, and p are three-digit integers and m + n = p Difficulty: 700-Level, Number Properties, Source: Manhattan GMAT
76How many prime factors does positive integer n have? Difficulty: 700-Level, Number Properties, Source: Veritas Prep
77In a sequence of 13 consecutive integers, all of which are Difficulty: 700-Level, Divisibility/Multiples/Factors, Sequences
78At a particular store, candy bars are normally priced at $1. Difficulty: 700-Level, Word Problems, Source: Manhattan GMAT
79A dental licensure exam requires a 75% minimum score in orde Difficulty: 700-Level, Fractions/Ratios/Decimals, Word Problems, Source: Veritas Prep
80If a, b and n are positive integers such that n = 3a – b3 Difficulty: 700-Level, Number Properties, Source: e-GMAT
81If a number N is decreased by p percent and then the resulting value Difficulty: 700-Level, Algebra, Source: Manhattan GMAT
82A rectangle is plotted on the standard coordinate plane Difficulty: 700-Level, Coordinate Geometry, Source: Grockit
83In the figure above, SQRE is a square, AB = AC, and AS = AQ. Difficulty: 700-Level, Geometry, Source: Manhattan GMAT
84When 3-digit integer 6a3 plus 3-digit integer 3b5 is divisible by 9, i Difficulty: 700-Level, Divisibility/Multiples/Factors, Source: Math Revolution
85If N is a positive three-digit number that is greater than 2 Difficulty: 700-Level, Fractions/Ratios/Decimals, Number Properties, Source: Manhattan GMAT
86If 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
87Four friends go to Macy’s for shopping and buy a top each. Three of th Difficulty: 700-Level, Word Problems, Source: Veritas Prep
88In the xy-coordinate plane, line A is defined by the equation j*x-y=-7 Difficulty: 700-Level, Coordinate Geometry, Source: GMAT Prep
89A certain diet program calls for eating daily calories from Difficulty: 700-Level, Word Problems, Source: GMAT Paper Tests
90ax + by=10, ay + bx=12. which one is greater here, x or y ? Difficulty: 700-Level, Inequalities
91In the morning, Chris drives from Toronto to Oakville and in the eveni Difficulty: 700-Level, Distance/Rate Problems, Source: Veritas Prep
92Is n/18 an integer? Difficulty: 700-Level, Divisibility/Multiples/Factors, Number Properties, Source: Manhattan GMAT
93In the table above is shown the percent reduction in the Difficulty: 700-Level, Percent and Interest Problems, Word Problems, Source: Princeton Review
94If n >2 and n^4-5n^2+4 = 20h, Is h an integer ? Difficulty: 700-Level, Algebra, Arithmetic, Source: Other - Please specify
95If xy 0, is x > y? (1) 4x = 3y (2) |y - x| = x - y Difficulty: 700-Level, Absolute Values/Modulus, Inequalities
96Is xy<0 ? (1) x^3*y^5/x*y^2 <0 (2) |x|-|y|<|x-y Difficulty: 700-Level, Absolute Values/Modulus, Inequalities
97If x and y are nonzero integers, is (x^(-1) + y^(-1))^(-1) > Difficulty: 700-Level, Exponents/Powers, Inequalities, Source: Manhattan GMAT
98If 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
99A circle is drawn on a coordinate plane. If a line is drawn Difficulty: 700-Level, Geometry, Source: Manhattan GMAT
100Of the 5 numbers, the largest number is 4 greater than the median. Is Difficulty: 700-Level, Statistics and Sets Problems
101If x is an integer, what is the value of x? Difficulty: 700-Level, Absolute Values/Modulus, Source: GMAT Pill
102When a positive integer 'x' is divided by a divisor 'd', the remainder Difficulty: 700-Level, Divisibility/Multiples/Factors, Remainders, Source: Other - Please specify
103If x, y, and z are positive integers, where x > y and z = √x Difficulty: 700-Level, Number Properties, Source: Kaplan
104Jane can paint the wall in J hours, and Bill can paint the Difficulty: 700-Level, Word Problems, Work/Rate Problems
105A nonprofit group organizes its local fundraisers in teams, Difficulty: 700-Level, Word Problems, Source: Veritas Prep
106In a certain company, 25% of the women and 17% of the men participate Difficulty: 700-Level, Word Problems, Source: Magoosh
107Of all the attendees at a dinner party, 40% were women. If Difficulty: 700-Level, Overlapping Sets
108a, b, and c are three integers such that a and b are less than 100, an Difficulty: 700-Level, Number Properties, Sequences
109What is the value of y? Difficulty: 700-Level, Algebra, Arithmetic, Roots, Source: Magoosh
110The average of a set of 7 integers equal 27. If the smallest number of Difficulty: 700-Level, Min/Max Problems, Source: Other - Please specify
111A drawer contains 6 socks. If two socks are randomly Difficulty: 700-Level, Probability, Source: GMATPrepNow
112Jeff is painting two murals on the front of an old apartment Difficulty: 700-Level, Geometry, Source: Manhattan GMAT
113If x, y, and z are positive integers such that x < y < z Difficulty: 700-Level, Divisibility/Multiples/Factors, Number Properties
114In 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
115If (x/y)>2, is 3x+2y<18? (1) x-y is less than 2 (2) Difficulty: 700-Level, Inequalities
116A person inherited few gold coins from his father. If he Difficulty: 700-Level, Remainders, Word Problems
117A set of nonnegative integers consists of {x, x + 7, 2x, y, y + 5}. Difficulty: 700-Level, Sequences
118For any integer n greater than 1, factorial denotes the product of all Difficulty: 700-Level, Number Properties, Source: e-GMAT
119Is product 2*x*5*y an even integer? Difficulty: 700-Level, Number Properties, Source: GMAT Club Tests
120The GMAT is scored on a scale of 200 to 800 in 10 point incr Difficulty: 700-Level, Statistics and Sets Problems, Word Problems, Source: GMAT Prep
121In triangle ABC (figure shown) drawn on a coordinate plane, A, B and C Difficulty: 700-Level, Coordinate Geometry, Source: Other - Please specify
122Two positive integers a and b are divisible by 5, which is their Difficulty: 700-Level, Number Properties, Source: e-GMAT
123In the trapezoid above, with sides a, b, c, and 1, what is the value o Difficulty: 700-Level, Geometry, Source: Manhattan GMAT
124A right circular cone, twice as tall as it is wide at its Difficulty: 700-Level, Geometry
125If 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
126What 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
127If a, b and c are integers such that b > a, is b+c > a Difficulty: 700-Level, Geometry, Inequalities
128If a, b and c are distinct positive integers, what is the value of (a Difficulty: 700-Level, Exponents/Powers, Source: Other - Please specify
129If x and y are positive integers is y odd? Difficulty: 700-Level, Algebra, Number Properties, Source: Manhattan GMAT
130Superfast train A leaves Newcastle for Birmingham at 3 PM and travels Difficulty: 700-Level, Distance/Rate Problems, Source: Veritas Prep
1318 schools sent a total of 96 students to a math club competition, with Difficulty: 700-Level, Min/Max Problems, Source: Veritas Prep
132If x and y are positive integers, is x a prime number? Difficulty: 700-Level, Absolute Values/Modulus, Algebra, Inequalities, Source: GMAT Club Tests
133If p, x, and y are positive integers, y is odd, and p = x^2 Difficulty: 700-Level, Divisibility/Multiples/Factors, Number Properties, Remainders
134Which of the two values 10^(-2) and 10^(-3), is x more close Difficulty: 700-Level, Arithmetic, Exponents/Powers
135Is x^2 + y^2 > 100? Difficulty: 700-Level, Algebra, Exponents/Powers, Source: Veritas Prep
136a, 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
137If the original price of an item in a retail store is marked Difficulty: 700-Level, Percent and Interest Problems, Source: Manhattan GMAT
138A certain fruit stand sells only apples for $0.26 each, bananas for $0 Difficulty: 700-Level, Word Problems, Source: Veritas Prep
139If x, y and z are integers and xy + z is an odd integer, is Difficulty: 700-Level, Number Properties, Source: GMAT Prep
140If for any positive integer x, d[x] denotes its smallest odd Difficulty: 700-Level, Divisibility/Multiples/Factors, Functions and Custom Characters
141If 10^a * 3^b * 5^c = 450^n, what is the value of c? Difficulty: 700-Level, Number Properties, Source: Veritas Prep
142x is an integer and x raised to any odd integer is greater Difficulty: 700-Level, Algebra, Exponents/Powers, Source: Official Guide
143If x, y, and z are positive integers, where x > y and Difficulty: 700-Level, Number Properties
144In the xy-plane, region R consists of all the points (x, y) Difficulty: 700-Level, Coordinate Geometry, Inequalities, Source: Official Guide
145A line with the equation y = px + q is reflected over the Difficulty: 700-Level, Coordinate Geometry
146X is a three-digit positive integer in which each digit is either 1 or Difficulty: 700-Level, Fractions/Ratios/Decimals, Remainders, Source: Manhattan GMAT
147If x and y are integers, does x^y * y^(-x) = 1? Difficulty: 700-Level, Exponents/Powers, Inequalities
148Is (y - 10)^2 > (x + 10)^2 Difficulty: 700-Level, Algebra, Inequalities, Source: Veritas Prep
149The sum of the integers in list S is the same as the sum of Difficulty: 700-Level, Statistics and Sets Problems, Source: GMAT Prep
150Events A and B are independent and have equal probabilities Difficulty: 700-Level, Probability, Source: Veritas Prep

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Re: 150 Hardest and easiest questions for DS [#permalink]

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150 Easiest Data Sufficiency Questions (Nov 1st, 2017 - Dec 1st, 2017)

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)
RankTitleTopics
1What is the value of 10 percent of y? Difficulty: Sub-600 Level, Percent and Interest Problems, Source: Official Guide
2What is the value of x ? Difficulty: Sub-600 Level, Algebra, Source: Official Guide
3In College X the number of students enrolled in both a Difficulty: Sub-600 Level, Overlapping Sets, Source: Official Guide
4For which type of investment, J or K, is the annual rate of Difficulty: Sub-600 Level, Percent and Interest Problems, Source: Official Guide
5The figure above represents a circle graph of Company H's Difficulty: Sub-600 Level, Geometry, Graphs and Illustrations, Source: Official Guide
6What is the value of w^(−2)? Difficulty: Sub-600 Level, Exponents/Powers, Source: Official Guide
7In the xy-plane above, is angle QPR a right angle? Difficulty: Sub-600 Level, Coordinate Geometry, Geometry, Source: Official Guide
8Committee member W wants to schedule a one-hour meeting on T Difficulty: Sub-600 Level, Word Problems, Source: Official Guide
9For the system of equations given, what is the value of z? Difficulty: Sub-600 Level, Algebra, Source: Official Guide
10Hoses X and Y simultaneously fill an empty swimming pool tha Difficulty: Sub-600 Level, Work/Rate Problems, Source: Official Guide
11If p, q, x, y, and z are different positive integers, which Difficulty: Sub-600 Level, Statistics and Sets Problems, Source: Official Guide
12If sequence S has 120 terms, what is the 105th term of S? Difficulty: Sub-600 Level, Sequences, Source: Official Guide
13Is x = 1/y? Difficulty: Sub-600 Level, Algebra, Source: Official Guide
14What is the value of r/2 + s/2 ? Difficulty: Sub-600 Level, Algebra, Arithmetic, Source: Official Guide
15Is x between 0 and 1? Difficulty: Sub-600 Level, Inequalities, Source: GMAT Prep
16Is p^2 an odd integer? Difficulty: Sub-600 Level, Number Properties, Source: Official Guide
17What is the value of n in the list above? Difficulty: Sub-600 Level, Statistics and Sets Problems, Source: Official Guide
18Carlotta can drive from her home to her office by one of two Difficulty: Sub-600 Level, Distance/Rate Problems, Source: Official Guide
19Is rw = 0? Difficulty: Sub-600 Level, Inequalities, Source: Official Guide
20If n is an integer, is n + 1 odd? Difficulty: Sub-600 Level, Number Properties, Source: Official Guide
21Each of the marbles in a jar is either red or white or blue. If one ma Difficulty: Sub-600 Level, Probability, Source: Official Guide
22What is the value of xy? Difficulty: Sub-600 Level, Algebra, Source: Official Guide
23What 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
24What is the value of z in the triangle above? Difficulty: Sub-600 Level, Geometry, Source: Official Guide
25What is the value of n? Difficulty: Sub-600 Level, Number Properties, Source: GMAT Prep
26The number of seats in the first row of an auditorium is 18 Difficulty: Sub-600 Level, Sequences, Source: Official Guide
27How many people in a group of 50 own neither a fax machine nor a laser Difficulty: Sub-600 Level, Overlapping Sets, Source: Official Guide
28If sequence S has 100 terms, what is the 83rd term of S? Difficulty: Sub-600 Level, Sequences, Source: Other - Please specify
29Is x < y? Difficulty: Sub-600 Level, Inequalities, Source: Official Guide
30The symbol R represents one of the following Difficulty: Sub-600 Level, Arithmetic, Functions and Custom Characters, Source: GMAT Hacks
31Is x < y? (1) z < y (2) z < x Difficulty: Sub-600 Level, Inequalities, Source: GMAT Paper Tests, Source: Official Guide
32What were the gross revenues from ticket sales for a certain Difficulty: Sub-600 Level, Word Problems, Source: Official Guide
33Water is pumped into a partially filled tank at a constant Difficulty: Sub-600 Level, Work/Rate Problems, Source: Official Guide
34For 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
35What is the value of w + q ? (1) 3w=3-3q (2) 5w +5q = 5 Difficulty: Sub-600 Level, Algebra, Source: Official Guide
36If x and y are integers, what is the value of y ? Difficulty: Sub-600 Level, Algebra, Source: Official Guide
37Square ABCD is inscribed in circle O. What is the area of square regio Difficulty: Sub-600 Level, Geometry, Source: Official Guide
38Is x a negative number? Difficulty: Sub-600 Level, Inequalities, Source: Official Guide
39In the figure above, what is the value of z? Difficulty: Sub-600 Level, Geometry, Source: Official Guide
40A garden store purchased a number of shovels and a number of Difficulty: Sub-600 Level, Word Problems
41Does nm = 40? Difficulty: Sub-600 Level, Algebra, Source: GMAT Paper Tests
42A circular tub has a band painted around its circumference Difficulty: Sub-600 Level, Geometry, Source: Official Guide
43Is w + h 4 positive? 1) h is positive 2) w is positive Difficulty: Sub-600 Level, Number Properties, Source: Official Guide
44What was the range of the selling prices of the 30 wallets sold by a Difficulty: Sub-600 Level, Word Problems, Source: Official Guide
45A circular pizza is cut into eight wedge-shaped slices of Difficulty: Sub-600 Level, Geometry, Source: Manhattan GMAT
46Machine X runs at a constant rate and produces a lot consist Difficulty: Sub-600 Level, Work/Rate Problems, Source: Official Guide
47If sequence S has 200 terms, what is the 192nd term of S Difficulty: Sub-600 Level, Sequences, Source: Official Guide
48What is the value of t? Difficulty: Sub-600 Level, Algebra, Source: Official Guide
49If p and q are positive, is p/q less than 1? Difficulty: Sub-600 Level, Inequalities, Source: Official Guide
50What is the greatest integer that is less than t? Difficulty: Sub-600 Level, Number Properties, Source: GMAT Prep
51In 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
52How many different 5-person teams can be formed from a group Difficulty: Sub-600 Level, Combinations
53If 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
54On a company-sponsored cruise, 2/3 of the passengers were Difficulty: Sub-600 Level, Word Problems, Source: Official Guide
55In a random sample of 80 adults, how many are college Difficulty: Sub-600 Level, Word Problems, Source: Official Guide
56What is the tenths digit of the number d when it is written as a...... Difficulty: Sub-600 Level, Fractions/Ratios/Decimals, Source: Official Guide
57What is the value of x ? Difficulty: Sub-600 Level, Algebra, Source: Official Guide
58What is the average (arithmetic mean) of j and k ? Difficulty: Sub-600 Level, Statistics and Sets Problems, Source: Official Guide
59What is the value of a − b ? Difficulty: Sub-600 Level, Algebra, Source: Princeton Review
60How many of the students in a certain class are taking both a history Difficulty: Sub-600 Level, Number Properties, Word Problems, Source: GMAT Prep
61In PQR, if PQ = x, QR = x + 2, and PR = y, which of the Difficulty: Sub-600 Level, Geometry, Source: Official Guide
62If x and y are integers, what is the value of x+y? Difficulty: Sub-600 Level, Arithmetic, Inequalities, Source: GMAT Prep
63The length of the edging that surrounds circular garden K is Difficulty: Sub-600 Level, Geometry, Source: Official Guide
64If Sara's age is exactly twice Bill's age, what is Sara's ag Difficulty: Sub-600 Level, Word Problems, Source: Official Guide
65If machine X ran continuously at a uniform rate to fill Difficulty: Sub-600 Level, Work/Rate Problems
66If i and j are integers, is i + j an even integer? Difficulty: Sub-600 Level, Number Properties, Source: Official Guide
67In PQR, if PQ = x, QR = x + 2, and PR = y, which of the Difficulty: Sub-600 Level, Geometry, Source: Official Guide
68Is z less than 0? Difficulty: Sub-600 Level, Inequalities, Source: Official Guide
69What is the product of v, w, and x? Difficulty: Sub-600 Level, Number Properties, Source: GMAT Prep EP 1
70If on a fishing trip Jim and Tom each caught some fish, which one Difficulty: Sub-600 Level, Word Problems, Source: Official Guide
71What is the cube root of w? Difficulty: Sub-600 Level, Roots, Source: Official Guide
72The perimeter of a rectangular garden is 360 feet. What is t Difficulty: Sub-600 Level, Geometry, Source: Official Guide
73If the sequence S has 300 terms, what is the 293rd term of S Difficulty: Sub-600 Level, Sequences, Source: Official Guide
74What is the value of x^3? Difficulty: Sub-600 Level, Absolute Values/Modulus, Algebra, Source: Veritas Prep
75What is the value of x – y ? Difficulty: Sub-600 Level, Algebra, Source: Princeton Review
76What is the radius of the circle above with center O? Difficulty: Sub-600 Level, Geometry, Source: Official Guide
77Is the product of a certain pair of integers even? Difficulty: Sub-600 Level, Number Properties, Source: GMAT Prep
78What is the volume of a certain cube? Difficulty: Sub-600 Level, Geometry, Source: GMAT Prep
79A certain investment earned a fixed rate of 4 percent interest per yea Difficulty: Sub-600 Level, Percent and Interest Problems, Source: Official Guide
80How long would it take Sue to paint the room? Difficulty: Sub-600 Level, Work/Rate Problems, Source: Other - Please specify
81Is 2x > 2y ? Difficulty: Sub-600 Level, Inequalities, Source: Official Guide
82What is the measure of angle YQZ in the figure? Difficulty: Sub-600 Level, Geometry, Source: Grockit
83What is the volume of the cube above? Difficulty: Sub-600 Level, Geometry, Source: Official Guide
84What is the value of x^2 - y^2 ? Difficulty: Sub-600 Level, Algebra, Source: Official Guide
85Elena receives a salary plus a commission that is equal to a Difficulty: Sub-600 Level, Percent and Interest Problems, Source: Official Guide
86What was Bill's average speed on his trip of 250 miles from New York Difficulty: Sub-600 Level, Distance/Rate Problems, Source: Manhattan GMAT
87If i and j are integers, is i + j an even integer? Difficulty: Sub-600 Level, Number Properties, Source: Official Guide
88If the two floors in a certain building are 9 feet apart Difficulty: Sub-600 Level, Word Problems, Source: Official Guide
89What was the amount of money donated to a certain charity? Difficulty: Sub-600 Level, Arithmetic, Percent and Interest Problems, Source: Official Guide
90If a certain animated cartoon consists of a total of 17,280 Difficulty: Sub-600 Level, Distance/Rate Problems, Source: Official Guide
91What amount did Jean earn from the commission on her sales Difficulty: Sub-600 Level, Word Problems, Source: Official Guide
92How many newspapers were sold at a certain newsstand today? Difficulty: Sub-600 Level, Word Problems, Source: Official Guide
93Machines X and Y run simultaneously at their respective Difficulty: Sub-600 Level, Work/Rate Problems
94If l and w represent the length and width, respectively, of Difficulty: Sub-600 Level, Geometry, Source: Official Guide
95In 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
96Is a even? Difficulty: Sub-600 Level, Number Properties
97In Mr. Smith's class, what is the ratio of the number of boy Difficulty: Sub-600 Level, Fractions/Ratios/Decimals, Source: Official Guide
98What is the volume of a certain cube? Difficulty: Sub-600 Level, Geometry
99Three houses are being sold through a real estate agent Difficulty: Sub-600 Level, Word Problems, Source: Official Guide
100On Sunday morning, a printing press printed its newspapers at a consta Difficulty: Sub-600 Level, Work/Rate Problems, Source: Manhattan GMAT
101If the Longfellow Playground is rectangular, what is its width? Difficulty: Sub-600 Level, Geometry, Source: Other - Please specify
102If S = {2, 3, x, y}, what is the value of x + y? Difficulty: Sub-600 Level, Number Properties
103Marcia's bucket can hold a maximum of how many liters of wat Difficulty: Sub-600 Level, Word Problems, Source: Official Guide
104John took a test that had 60 questions numbered from 1 to 60 Difficulty: Sub-600 Level, Word Problems, Source: Official Guide
105If x ≠ 0, what is the value of (x^p/x^q)^4 ? Difficulty: Sub-600 Level, Algebra, Exponents/Powers, Source: Official Guide
106Q is a cube. Find the volume of the cube. Difficulty: Sub-600 Level, Geometry, Source: Magoosh
107What is the value of b + c ? Difficulty: Sub-600 Level, Algebra, Source: Official Guide
108If n is a positive integer, is n odd? Difficulty: Sub-600 Level, Number Properties, Source: Official Guide
109If w+ z = 28, what is the value of wz? Difficulty: Sub-600 Level, Algebra, Arithmetic, Source: Official Guide
110Who types at a faster rate, John or Bob? Difficulty: Sub-600 Level, Work/Rate Problems, Source: Economist GMAT Tutor
111What 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
112If t denotes the thousandths digit in the decimal Difficulty: Sub-600 Level, Arithmetic, Fractions/Ratios/Decimals, Source: Official Guide
113Does the decimal equivalent of P/Q, where P and Q are Difficulty: Sub-600 Level, Fractions/Ratios/Decimals
114If A and B are positive integers, is the product AB even? Difficulty: Sub-600 Level, Number Properties, Source: Official Guide
115In the triangle above, does a^2 + b^2 = c^2 ? Difficulty: Sub-600 Level, Geometry, Source: Official Guide
116A thoroughly blended biscuit mix includes only flour and bak Difficulty: Sub-600 Level, Mixture Problems
117If 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
118If m/n = 5/3, what is the value of m + n ? Difficulty: Sub-600 Level, Algebra, Source: Official Guide
119What is the value of the integer p ? Difficulty: Sub-600 Level, Divisibility/Multiples/Factors, Number Properties, Source: Official Guide
120If x is an integer, is x|x|<2^x ? Difficulty: Sub-600 Level, Absolute Values/Modulus, Algebra, Inequalities, Source: Official Guide
121If d is a positive integer, is d^1/2 an integer? Difficulty: Sub-600 Level, Number Properties, Source: Official Guide
122The total amount that John paid at a certain restaurant Difficulty: Sub-600 Level, Percent and Interest Problems, Source: GMAT Prep QP1
123For 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
124What is the value of ab + bc ? (1) b = 5 (2) a + c = 8 Difficulty: Sub-600 Level, Algebra, Source: Grockit
125A jar contains 30 marbles, of which 20 are red and 10 are bl Difficulty: Sub-600 Level, Probability, Source: Official Guide
126A citrus fruit grower receives $15 for each crate of oranges Difficulty: Sub-600 Level, Word Problems, Source: Official Guide
127What percent of a group of people are women with red hair? Difficulty: Sub-600 Level, Overlapping Sets, Source: Official Guide
128If Pat saved $600 of his earnings last month, how much did Difficulty: Sub-600 Level, Word Problems, Source: Official Guide
129If r and s are integers, is r divisible by 7? Difficulty: Sub-600 Level, Divisibility/Multiples/Factors, Number Properties
130What is the retail price of a certain calculator? (1) The retail pri Difficulty: Sub-600 Level, Arithmetic, Source: Manhattan GMAT
131On May 1 of last year, Jasmin invested x dollars in a new Difficulty: Sub-600 Level, Percent and Interest Problems, Source: GMAT Prep QP1
132What is the value of n in the equation - 25 + 19 + n = S ? Difficulty: Sub-600 Level, Algebra, Source: Official Guide
133If w + z = 28, what is the value of wz Difficulty: Sub-600 Level, Algebra, Source: Official Guide
134What is the area of square ABCD? Difficulty: Sub-600 Level, Geometry, Source: Veritas Prep
135How many different carpool possibilities exist for 12 coworkers from Difficulty: Sub-600 Level, Combinations, Source: Other - Please specify
136If 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
137Is ax=3-bx? Difficulty: Sub-600 Level, Algebra, Source: Official Guide
138In the figure above, segments PQ and PR are each parallel to one of th Difficulty: Sub-600 Level, Coordinate Geometry, Source: GMAT Prep
139What is the value of xy ? Difficulty: Sub-600 Level, Algebra, Source: GMAT Hacks
140What is the average (arithmetic mean) of x and y? Difficulty: Sub-600 Level, Statistics and Sets Problems, Source: Official Guide
141How far is A from C? Difficulty: Sub-600 Level, Distance/Rate Problems, Source: Kaplan
142In the figure above, what is the measure of angle ABC? Difficulty: Sub-600 Level, Geometry, Source: Official Guide
143What is the standard deviation of the values of the 20 coins in a Difficulty: Sub-600 Level, Statistics and Sets Problems, Source: GMAT Prep EP 2
144If t denotes the thousandths digit in the decimal Difficulty: Sub-600 Level, Fractions/Ratios/Decimals, Source: Official Guide
145What is the average (arithmetic mean) of the first 90 measurements Difficulty: Sub-600 Level, Statistics and Sets Problems, Source: GMAT Prep EP 1
146If |x| = |y|, is x/y = -1? Difficulty: Sub-600 Level, Absolute Values/Modulus, Source: GMAT Prep EP 1
147What is the value of the integer N? Difficulty: Sub-600 Level, Inequalities, Source: Official Guide
148What is the remainder when the positive integer n is divided Difficulty: Sub-600 Level, Remainders, Source: GMAT Prep
149If x and yare positive, is x/y greater than 1 ? Difficulty: Sub-600 Level, Inequalities, Source: Official Guide
150The perimeter of a rectangular garden is 360 feet. What is Difficulty: Sub-600 Level, Geometry, Source: Official Guide

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Collection of Questions:
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Re: 150 Hardest and easiest questions for DS [#permalink]

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Re: 150 Hardest and easiest questions for DS [#permalink]

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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 [#permalink]

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Hello from the GMAT Club BumpBot!

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Re: 150 Hardest and easiest questions for DS [#permalink]

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New post 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 [#permalink]

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New post 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.

Posted from my mobile device

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New post 29 Jun 2017, 20:57
Thanks Buñuel for your efforts.[WHITE SMILING FACE]

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150 Hardest and easiest questions for DS [#permalink]

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New post 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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Re: 150 Hardest and easiest questions for DS [#permalink]

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New post 24 Aug 2017, 20:58
2201neha wrote:
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!


The list is regularly updated so there is no downloadable file.
_________________

New to the Math Forum?
Please read this: Ultimate GMAT Quantitative Megathread | All You Need for Quant | PLEASE READ AND FOLLOW: 12 Rules for Posting!!!

Resources:
GMAT Math Book | Triangles | Polygons | Coordinate Geometry | Factorials | Circles | Number Theory | Remainders; 8. Overlapping Sets | PDF of Math Book; 10. Remainders | GMAT Prep Software Analysis | SEVEN SAMURAI OF 2012 (BEST DISCUSSIONS) | Tricky questions from previous years.

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.


What are GMAT Club Tests?
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Re: 150 Hardest and easiest questions for DS   [#permalink] 24 Aug 2017, 20:58
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