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100 Hardest and easiest questions for DS as of December 2019

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Joined: 02 Sep 2009
Posts: 60480
100 Hardest and easiest questions for DS  [#permalink]

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New post Updated on: 01 Jan 2020, 05:45
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382

100 Hardest Data Sufficiency Questions (Dec 1st, 2019 - Jan 1st, 2020)

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 100 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 (2) w= 45 degree Difficulty: 700-Level, Geometry
3In the correctly worked addition problem above, A, B, C, D Difficulty: 700-Level, Arithmetic, Number Properties, Source: Manhattan GMAT
4w, 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
5A car dealership carries only sedans and SUVs Difficulty: 700-Level, Percent and Interest Problems, Word Problems, Source: Veritas Prep
6If n is a prime number greater than 2, is 1/x > 1? Difficulty: 700-Level, Exponents/Powers, Inequalities, Source: Manhattan GMAT
7n and k are positive integers. When n is divided by 23, the quotient i Difficulty: 700-Level, Remainders, Source: GMATPrepNow
8If k is an integer and x(x – k) = k + 1, what is the value of x? Difficulty: 700-Level, Algebra, Source: Other - Please specify
9If all the N students of a class are classified into groups of either Difficulty: 700-Level, Divisibility/Multiples/Factors, Number Properties, Source: e-GMAT
10If, in the addition problem above, a, b, c, d, e, f, x, y, a Difficulty: 700-Level, Arithmetic
11For integers a and b, if (a^3 a^2 b)^1/2 = 7, what is the Difficulty: 700-Level, Algebra
12When 120 is divided by positive single-digit integer m the remainder Difficulty: 700-Level, Absolute Values/Modulus, Divisibility/Multiples/Factors, Source: Other - Please specify
13Julian bought 6 kilograms of cheese from each of Deli A and Deli B. At Difficulty: 700-Level, Word Problems, Source: 800 Score
14The average (arithmetic mean) of 5 distinct, single digit integers is Difficulty: 700-Level, Number Properties, Source: Princeton Review
15The cost of 3 chocolates, 5 biscuits, and 5 ice creams is Difficulty: 700-Level, Word Problems
16Right triangle ABO is drawn in the xy-plane, with OB as hypo Difficulty: 700-Level, Geometry, Source: Manhattan GMAT
17Abe, Beth, Carl and Duncan are four siblings, among which Abe and Carl Difficulty: 700-Level, Number Properties, Source: e-GMAT
18If h and k are both positive integers, are both roots of the equation Difficulty: 700-Level, Algebra
19If 20 Swiss Francs is enough to buy 9 notebooks and 3 pencils, is 40 Difficulty: 700-Level, Inequalities, Word Problems
20There is a sequence, 4(10^n), 4(10^(n-1)), ..., 4(10^(n-m)), for posit Difficulty: 700-Level, Number Properties, Sequences, Source: Manhattan GMAT, Source: Math Revolution
21P and Q are prime numbers less than 70. What is the units digit of P*Q Difficulty: 700-Level, Number Properties, Source: e-GMAT
22A 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
23If 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
24A certain fruit stand sells only apples for $0.26 each, bananas for $0 Difficulty: 700-Level, Word Problems, Source: Veritas Prep
25W, X, Y, and Z represent distinct digits such that WX * YZ = 1995. Wha Difficulty: 700-Level, Number Properties, Source: Veritas Prep
26A cube is made up of equal smaller cubes. Two of the sides Difficulty: 700-Level, Geometry
27If a, b, and c are positive integers such that 1/a + 1/b = 1 Difficulty: 700-Level, Fractions/Ratios/Decimals, Inequalities, Source: Manhattan GMAT
28A newer machine, working alone at its constant rate Difficulty: 700-Level, Work/Rate Problems, Source: Veritas Prep
29What is b in the circle shown above? Difficulty: 700-Level, Geometry, Source: Other - Please specify
30Three employees, A, B and C, clean a certain conference room each day. Difficulty: 700-Level, Work/Rate Problems, Source: Other - Please specify
31The number of elements in set K is an odd number. The minimum value of Difficulty: 700-Level, Statistics and Sets Problems, Source: Math Revolution
32If 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
33The Range of Set A is R. A number having equal value to R Difficulty: 700-Level, Statistics and Sets Problems
34The numbers D, N, and P are positive integers, such that D < N, and N Difficulty: 700-Level, Exponents/Powers, Number Properties, Source: Magoosh
35w, x, y, and z are integers. If z > y > x > w, is |w| > x^2 Difficulty: 700-Level, Absolute Values/Modulus, Inequalities, Source: Kaplan
36A natural number p, when divided by a certain divisor q, gives Difficulty: 700-Level, Number Properties, Remainders, Source: Jamboree
37In the picture, quadrilateral ABCD is a parallelogram and Difficulty: 700-Level, Geometry
38At a restaurant, a group of friends ordered four main dishes Difficulty: 700-Level, Min/Max Problems, Source: Manhattan GMAT
39If x, y and z are positive integers such that x^4*y^3 = z^2 Difficulty: 700-Level, Number Properties, Source: e-GMAT
40Maria drove a distance without stopping such that she covered first Difficulty: 700-Level, Distance/Rate Problems, Source: Other - Please specify
41There are N men in a group. Their average age is 20 years. Find N. Difficulty: 700-Level, Statistics and Sets Problems, Source: Other - Please specify
42If x is positive, what is the value of |x – 3| – 2|x – 4| + Difficulty: 700-Level, Absolute Values/Modulus, Inequalities, Source: Manhattan GMAT
43A three digit number A with hundreds digit a, tens digit b and units Difficulty: 700-Level, Divisibility/Multiples/Factors, Number Properties, Source: Jamboree
44Is 1/(x-y) < y - x Difficulty: 700-Level, Inequalities
45If a, b, x, y are positive integers and a^xb^y= 144, then a + b = ? Difficulty: 700-Level, Algebra, Exponents/Powers, Source: Math Revolution
46Is x^3 - 6x^2 + 11x - 6 < 0 Difficulty: 700-Level, Inequalities
47Is a - 3b an even number? Difficulty: 700-Level, Number Properties
48In a sequence of 13 consecutive integers, all of which are Difficulty: 700-Level, Divisibility/Multiples/Factors, Sequences
49The area of a rectangle is 28 square centimeter. What is the perimeter Difficulty: 700-Level, Algebra, Geometry
50A set of positive integers contains twice as many even integers as odd Difficulty: 700-Level, Divisibility/Multiples/Factors, Number Properties, Probability
51x, y are positive integers. Find the number of even factors of 4x^2 Difficulty: 700-Level, Divisibility/Multiples/Factors, Source: e-GMAT
52In a group of 80 college students, how many own a car? Difficulty: 700-Level, Overlapping Sets, Source: Magoosh
53If a and b are two-digit positive integers greater than 10 Difficulty: 700-Level, Remainders, Source: GMAT Club Tests
54If 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
55Is y^2 + 7y + xy even? Difficulty: 700-Level, Divisibility/Multiples/Factors, Number Properties
56For positive integers n and m (n>m), is the average (arithmetic mean) Difficulty: 700-Level, Number Properties, Statistics and Sets Problems, Source: Math Revolution
57If 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
58Between 1980 and 1985, Pierre’s investment portfolio increas Difficulty: 700-Level, Percent and Interest Problems, Source: Princeton Review
59Superfast train A leaves Newcastle for Birmingham at 3 PM and travels Difficulty: 700-Level, Distance/Rate Problems, Source: Veritas Prep
60If x is a positive integer less than 100 such that x is Difficulty: 700-Level, Algebra, Exponents/Powers, Source: e-GMAT
61A certain ride has 60 people standing in line awaiting admission. If Difficulty: 700-Level, Overlapping Sets, Source: Other - Please specify
62If n >2 and n^4-5n^2+4 = 20h, Is h an integer ? Difficulty: 700-Level, Algebra, Arithmetic, Source: Other - Please specify
63If x and y are non zero numbers less than 1, is (y^4 − x^4) > (y^3 − x Difficulty: 700-Level, Inequalities, Source: Jamboree
64If x, y, and z are integers, and x < y < z, is z y = y Difficulty: 700-Level, Statistics and Sets Problems, Source: Manhattan GMAT
65In the correctly-worked multiplication problem above, each symbol repr Difficulty: 700-Level, Arithmetic, Number Properties, Source: Veritas Prep
66If 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
67Students in a class are arranged to form groups of 4 members each Difficulty: 700-Level, Remainders, Source: Veritas Prep
68Is |2a − 3b| < |a − b| + |a − 2b| Difficulty: 700-Level, Absolute Values/Modulus
69If a, b, and c are integers such that 0 < a < b < c < 10, is Difficulty: 700-Level, Divisibility/Multiples/Factors, Source: Manhattan GMAT
70What is b in the circle shown above? (1) bc = 5a (2) The length of PQ Difficulty: 700-Level, Geometry, Source: Other - Please specify
71a, b, and c are three integers such that a and b are less than 100, an Difficulty: 700-Level, Number Properties, Sequences
72How many prime factors does positive integer n have? Difficulty: 700-Level, Number Properties, Source: Veritas Prep
73In the number 13,52#,@ and # represent distinct digits. Difficulty: 700-Level, Arithmetic, Divisibility/Multiples/Factors, Source: Princeton Review
74If the given addition is correct, what is the sum of T, U and V? Difficulty: 700-Level, Algebra, Source: Other - Please specify
75Set X consists of 9 positive elements. Set Y consists of the Difficulty: 700-Level, Statistics and Sets Problems
76Reiko drove from point A to point B at a constant speed, and Difficulty: 700-Level, Distance/Rate Problems, Source: Manhattan GMAT
77In the morning, Chris drives from Toronto to Oakville and in the eveni Difficulty: 700-Level, Distance/Rate Problems, Source: Veritas Prep
78Points A, B, C and D lie on a circle of radius 1. Let x be Difficulty: 700-Level, Geometry
79X is a three-digit positive integer in which each digit is either 1 or Difficulty: 700-Level, Fractions/Ratios/Decimals, Remainders, Source: Manhattan GMAT
80At a particular store, candy bars are normally priced at $1. Difficulty: 700-Level, Word Problems, Source: Manhattan GMAT
81If a and b are both positive integers, is b^(a+1) - ba^b odd? Difficulty: 700-Level, Algebra, Number Properties, Source: Manhattan GMAT
82If x and y are positive integers, what is the value of x? Difficulty: 700-Level, Remainders, Source: GMATPrepNow
83When a positive integer 'x' is divided by a divisor 'd', the remainder Difficulty: 700-Level, Divisibility/Multiples/Factors, Remainders, Source: Other - Please specify
84Is the integer 2b divisible by 6 ? Difficulty: 700-Level, Divisibility/Multiples/Factors
85A drawer contains 6 socks. If two socks are randomly Difficulty: 700-Level, Probability, Source: GMATPrepNow
86The nth term of an increasing sequence S is given by Sn = Sn-1 + Sn-2 Difficulty: 700-Level, Algebra, Sequences
87w, x, y and z are positive integers such that y < z < x < w. Difficulty: 700-Level, Remainders, Source: GMATPrepNow
88If x, y, and k are positive integers, is k < 10 ? Difficulty: 700-Level, Algebra, Exponents/Powers, Roots, Source: Princeton Review
89How many subordinates does Marcia have? Difficulty: 700-Level, Combinations
90A committee of 2 people is to be formed from a group of 8 Difficulty: 700-Level, Probability
91If x and y are negative numbers, is x<y? Difficulty: 700-Level, Inequalities, Source: GMAT Club Tests
92In the xy-coordinate plane, line L passes through the points (b, a) an Difficulty: 700-Level, Coordinate Geometry, Source: Manhattan GMAT
93In the xy-coordinate plane, line A is defined by the equation j*x-y=-7 Difficulty: 700-Level, Coordinate Geometry, Source: GMAT Prep
94A certain salesman's yearly income is determined by a base salary plus Difficulty: 700-Level, Percent and Interest Problems, Word Problems, Source: Manhattan GMAT
95Is A + B + C even? Difficulty: 700-Level, Number Properties, Source: GMAT Club Tests
96If m, n, and p are three-digit integers and m + n = p Difficulty: 700-Level, Number Properties, Source: Manhattan GMAT
97If x is an integer between 0 and 10 is y less than the average of x an Difficulty: 700-Level, Inequalities, Source: Other - Please specify
98If x/y > 2, is 3x + 2y < 18? (1) x - y is less than 2 (2) y - x is les Difficulty: 700-Level, Inequalities
99If 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
100If N is a positive three-digit number that is greater than 2 Difficulty: 700-Level, Fractions/Ratios/Decimals, Number Properties, Source: Manhattan GMAT

_________________

Originally posted by Bunuel on 21 Aug 2015, 03:42.
Last edited by Bunuel on 01 Jan 2020, 05:45, edited 1 time in total.
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Math Expert
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Re: 100 Hardest and easiest questions for DS  [#permalink]

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New post Updated on: 01 Jan 2020, 05:45
13
52

100 Easiest Data Sufficiency Questions (Dec 1st, 2019 - Jan 1st, 2020)

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 100 questions from DS forum.
Data Sufficiency (DS)
RankTitleTopics
1If a certain vase contains only roses and tulips, how many tulips are Difficulty: Sub-600 Level, Word Problems, Source: Official Guide, Source: OG 2020, Source: OG 2019
2What is the value of 10 percent of y? Difficulty: Sub-600 Level, Percent and Interest Problems, Source: Official Guide, Source: OG 2020, Source: OG 2019, Source: OG 2018, Source: OG 2017, Source: OG 2016
3What is the number of pages of a certain journal article? The size of Difficulty: Sub-600 Level, Word Problems, Source: Official Guide, Source: OG 2020, Source: OG 2019
4In a recent town election, what was the ratio of the number of votes Difficulty: Sub-600 Level, Word Problems, Source: Official Guide, Source: OG 2020, Source: OG 2019
5What is the value of x ? Difficulty: Sub-600 Level, Algebra, Source: Official Guide, Source: Quant Review 2nd
6In College X the number of students enrolled in both a Difficulty: Sub-600 Level, Overlapping Sets, Source: GMAT Paper Tests, Source: Official Guide, Source: OG 2017, Source: OG 2016, Source: OG 2015, Source: OG 12
7How many basic units of currency X are equivalent to 250 basi Difficulty: Sub-600 Level, Arithmetic, Source: Official Guide, Source: OG 2020, Source: OG 2019
8For which type of investment, J or K, is the annual rate of Difficulty: Sub-600 Level, Percent and Interest Problems, Source: GMAT Paper Tests, Source: Official Guide, Source: OG 2015, Source: OG 12
9What was the median annual salary for the employees at Compan Difficulty: Sub-600 Level, Statistics and Sets Problems, Source: Official Guide, Source: OG 2020, Source: OG 2019
10The symbol R represents one of the following Difficulty: Sub-600 Level, Arithmetic, Functions and Custom Characters, Source: GMAT Hacks
11If p and q are positive, is p/q less than 1? Difficulty: Sub-600 Level, Inequalities, Source: Official Guide, Source: Quant Review 2020, Source: Quant Review 2019, Source: Quant Review 2018, Source: Quant Review 2017, Source: Quant Review 2016
12The research funds of a certain company were divided among three depar Difficulty: Sub-600 Level, Word Problems, Source: Official Guide, Source: OG 2020, Source: OG 2019
13If sequence S has 120 terms, what is the 105th term of S? Difficulty: Sub-600 Level, Sequences, Source: Official Guide, Source: OG 2020, Source: OG 2019, Source: OG 2018, Source: OG 2017, Source: OG 2016
14If sequence S has 100 terms, what is the 83rd term of S? Difficulty: Sub-600 Level, Sequences, Source: Other - Please specify
15What is the value of x ? Difficulty: Sub-600 Level, Algebra, Source: Official Guide, Source: Quant Review 2018, Source: Quant Review 2017, Source: Quant Review 2016
16Is x = 1/y? Difficulty: Sub-600 Level, Algebra, Source: Official Guide, Source: OG 2020, Source: OG 2019, Source: OG 2018, Source: OG 2017, Source: OG 2016
17What is the tenths digit of the number d when it is written as a...... Difficulty: Sub-600 Level, Fractions/Ratios/Decimals, Source: Official Guide, Source: Quant Review 2018, Source: Quant Review 2017, Source: Quant Review 2016
18What is the value of n? Difficulty: Sub-600 Level, Number Properties, Source: GMAT Prep
19The figure above represents a circle graph of Company H's total expens Difficulty: Sub-600 Level, Geometry, Graphs and Illustrations, Source: Official Guide, Source: OG 2020, Source: OG 2019, Source: OG 2018, Source: OG 2017, Source: OG 2016, Source: OG 2015, Source: OG 12, Source: OG 11
20What is the value of w^(−2)? Difficulty: Sub-600 Level, Exponents/Powers, Source: Official Guide, Source: OG 2020, Source: OG 2019, Source: OG 2018, Source: OG 2017, Source: OG 2016
21If r and s are positive integers, is r + s even? Difficulty: Sub-600 Level, Number Properties, Source: Official Guide, Source: OG 2020
22If p, q, x, y, and z are different positive integers, which Difficulty: Sub-600 Level, Statistics and Sets Problems, Source: GMAT Paper Tests, Source: Official Guide, Source: OG 10, Source: Quant Review 2020, Source: Quant Review 2019, Source: Quant Review 2018, Source: Quant Review 2017, Source: Quant Review 2016, Source: Quant Review 2nd, Source: Quant Review 1st
23What is the value of xy? Difficulty: Sub-600 Level, Algebra, Source: GMAT Paper Tests, Source: Official Guide, Source: OG 10, Source: Quant Review 2020, Source: Quant Review 2019, Source: Quant Review 2018, Source: Quant Review 2017, Source: Quant Review 2016, Source: Quant Review 2nd, Source: Quant Review 1st
24Each of the marbles in a jar is either red or white or blue. If one ma Difficulty: Sub-600 Level, Probability, Source: Official Guide, Source: OG 2020, Source: OG 2019, Source: OG 2018, Source: OG 2017, Source: OG 2016
25In the xy-plane above, is angle QPR a right angle? Difficulty: Sub-600 Level, Coordinate Geometry, Geometry, Source: Official Guide, Source: OG 2018, Source: OG 2017, Source: OG 2016, Source: OG 2015
26Is p^2 an odd integer? Difficulty: Sub-600 Level, Number Properties, Source: GMAT Paper Tests, Source: Official Guide, Source: OG 10, Source: Quant Review 2016, Source: Quant Review 2nd, Source: Quant Review 1st
27Carlotta can drive from her home to her office by one of two Difficulty: Sub-600 Level, Distance/Rate Problems, Source: Official Guide, Source: OG 12, Source: OG 11, Source: OG 10
28What is the perimeter of triangle ABC ? (1) AB = 16 inches (2) ABC is Difficulty: Sub-600 Level, Geometry, Source: Official Guide, Source: Quant Review 2020
29What 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
30How many of the students in a certain class are taking both a history Difficulty: Sub-600 Level, Number Properties, Word Problems, Source: GMAT Prep
31What is the value of r/2 + s/2 ? Difficulty: Sub-600 Level, Algebra, Arithmetic, Source: GMAT Paper Tests, Source: Official Guide, Source: OG 10, Source: Quant Review 2018, Source: Quant Review 2017, Source: Quant Review 2016, Source: Quant Review 2nd, Source: Quant Review 1st
32A company bought 3 printers and 1 scanner. What was the price of the Difficulty: Sub-600 Level, Word Problems, Source: Official Guide, Source: OG 2020, Source: OG 2019
33Committee member W wants to schedule a one-hour meeting on T Difficulty: Sub-600 Level, Word Problems, Source: Official Guide, Source: OG 10, Source: Quant Review 2016, Source: Quant Review 2nd, Source: Quant Review 1st
34Is rw = 0? Difficulty: Sub-600 Level, Inequalities, Source: Official Guide, Source: OG 2020, Source: OG 2019, Source: OG 2018, Source: OG 2017, Source: OG 2016
35Is x between 0 and 1? (1) x is between -1/2 and 3/2 (2) 3/4 is 1/4 Difficulty: Sub-600 Level, Inequalities, Source: GMAT Prep, Source: Quant Review 2020, Source: Quant Review 2019
36Hoses X and Y simultaneously fill an empty swimming pool tha Difficulty: Sub-600 Level, Work/Rate Problems, Source: Official Guide, Source: OG 10, Source: Quant Review 2nd, Source: Quant Review 1st
37Is 2x > 2y ? Difficulty: Sub-600 Level, Inequalities, Source: Official Guide, Source: Quant Review 2020, Source: Quant Review 2019, Source: Quant Review 2018, Source: Quant Review 2017, Source: Quant Review 2016
38What is the value of n in the list above? Difficulty: Sub-600 Level, Statistics and Sets Problems, Source: Official Guide, Source: OG 2020, Source: OG 2019, Source: OG 2018, Source: OG 2017, Source: OG 2016, Source: OG 2015
39Is x < y? Difficulty: Sub-600 Level, Inequalities, Source: Official Guide, Source: Quant Review 2nd
40What is the retail price of a certain calculator? (1) The retail pri Difficulty: Sub-600 Level, Arithmetic, Source: Manhattan GMAT
41Machine R and machine S work at their respective constant rates. How Difficulty: Sub-600 Level, Work/Rate Problems, Source: Official Guide, Source: OG 2020, Source: OG 2019
42Does 2x + 8 = 12 ? (1) 2x + 10 = 14 (2) 3x + 8 = 14 Difficulty: Sub-600 Level, Algebra, Source: Official Guide, Source: Quant Review 2020, Source: Quant Review 2019
43How many men are in a certain company's vanpool program? Difficulty: Sub-600 Level, Word Problems, Source: Official Guide, Source: OG 2020, Source: OG 2019
44If sequence S has 200 terms, what is the 192nd term of S Difficulty: Sub-600 Level, Sequences, Source: OG 12
45How many people in a group of 50 own neither a fax machine nor a laser Difficulty: Sub-600 Level, Overlapping Sets, Source: Official Guide, Source: OG 2020, Source: OG 2019, Source: OG 2018, Source: OG 2017, Source: OG 2016
46Is x < y? (1) z < y (2) z < x Difficulty: Sub-600 Level, Inequalities, Source: GMAT Paper Tests, Source: Official Guide, Source: OG 10, Source: Quant Review 2016, Source: Quant Review 1st
47If n is an integer, is n + 1 odd? Difficulty: Sub-600 Level, Number Properties, Source: Official Guide, Source: OG 2016, Source: OG 2015, Source: OG 12, Source: OG 11
48For the system of equations given, what is the value of z? Difficulty: Sub-600 Level, Algebra, Source: Official Guide, Source: OG 2015, Source: OG 12, Source: OG 11
49What is the product of v, w, and x? Difficulty: Sub-600 Level, Number Properties
50For 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, Source: Quant Review 2020, Source: Quant Review 2019, Source: Quant Review 2018, Source: Quant Review 2017, Source: Quant Review 2016
51In a certain class, some students donated cans of food to a local food Difficulty: Sub-600 Level, Word Problems, Source: Official Guide, Source: OG 2020, Source: OG 2019
52A circular pizza is cut into eight wedge-shaped slices of equal size. Difficulty: Sub-600 Level, Geometry, Source: Manhattan GMAT
53In 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
54What is the greatest integer that is less than t? Difficulty: Sub-600 Level, Number Properties, Source: GMAT Prep
55If the Longfellow Playground is rectangular, what is its width? Difficulty: Sub-600 Level, Geometry, Source: Official Guide [Pre-2000], Source: OG 1988
56If 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
57Is x an integer? (1) x^3 = 8 (2) x = 4^(1/2) Difficulty: Sub-600 Level, Algebra, Number Properties, Source: Official Guide, Source: OG 2020
58A garden store purchased a number of shovels and a number of rakes. If Difficulty: Sub-600 Level, Word Problems, Source: GMAT Prep
59What is the value of w + q ? (1) 3w=3-3q (2) 5w +5q = 5 Difficulty: Sub-600 Level, Algebra, Source: Official Guide, Source: OG 2020, Source: OG 2019, Source: OG 2018, Source: OG 2017, Source: OG 2016, Source: OG 2015
60The number of seats in the first row of an auditorium is 18 Difficulty: Sub-600 Level, Sequences, Source: Official Guide, Source: OG 2018, Source: OG 2017, Source: OG 2016, Source: OG 2015
61In the figure above, segments PQ and PR are each parallel to one of th Difficulty: Sub-600 Level, Coordinate Geometry, Source: GMAT Prep
62What is the value of x^3? Difficulty: Sub-600 Level, Absolute Values/Modulus, Algebra, Source: Veritas Prep
63The cost of 10 pounds of apples and 2 pounds of grapes was $1 Difficulty: Sub-600 Level, Algebra, Source: Official Guide, Source: OG 2020, Source: OG 2019
64Square ABCD is inscribed in circle O. What is the area of square regio Difficulty: Sub-600 Level, Geometry, Source: Official Guide, Source: OG 2020, Source: OG 2019, Source: OG 2018, Source: OG 2017, Source: OG 2016
65Is the integer p even? (1) The integer p^2 + 1 is odd. (2) The integer Difficulty: Sub-600 Level, Number Properties, Source: Official Guide, Source: Quant Review 2020, Source: Quant Review 2019
66P is a particle on the circle shown above. What is the length of the p Difficulty: Sub-600 Level, Geometry, Source: Official Guide, Source: Quant Review 2020
67If x is positive, what is the value of y ? Difficulty: Sub-600 Level, Algebra, Source: GMAT Prep
68If R, S, and T are points on a line, and if R is 5 meters from T and 2 Difficulty: Sub-600 Level, Geometry, Source: Official Guide, Source: OG 2020
69On a map, 1/2 inch represents 100 miles. According to this map, how ma Difficulty: Sub-600 Level, Arithmetic, Source: Official Guide, Source: OG 2020
70What is the volume of the cube above? Difficulty: Sub-600 Level, Geometry, Source: Official Guide, Source: Quant Review 2020, Source: Quant Review 2019, Source: Quant Review 2018, Source: Quant Review 2017, Source: Quant Review 2016
71What is the value of x−1? Difficulty: Sub-600 Level, Algebra, Source: Official Guide [Pre-2000], Source: OG 1988, Source: Other - Please specify
72Was the amount of John's heating bill for February greater than it was Difficulty: Sub-600 Level, Word Problems, Source: Official Guide, Source: OG 2020, Source: OG 2019
73What was the range of the selling prices of the 30 wallets sold by a Difficulty: Sub-600 Level, Word Problems, Source: Official Guide, Source: OG 2020, Source: OG 2019, Source: OG 2018, Source: OG 2017, Source: OG 2016
74What is the volume of a certain cube? Difficulty: Sub-600 Level, Geometry, Source: GMAT Prep
75Point (x, y) has in which quadrant of the rectangular coordinate syste Difficulty: Sub-600 Level, Coordinate Geometry, Source: GMAT Paper Tests, Source: Magoosh, Source: OG 10, Source: Quant Review 1st
76What is the value of ab + bc ? (1) b = 5 (2) a + c = 8 Difficulty: Sub-600 Level, Algebra, Source: Grockit
77In the figure above, what is the value of z? Difficulty: Sub-600 Level, Geometry, Source: Official Guide, Source: OG 2020, Source: OG 2019, Source: OG 2018, Source: OG 2017
78Does nm =40? (1) 10/n = m/4 (2) 5n = 20 and 8m = 80 Difficulty: Sub-600 Level, Algebra, Source: GMAT Paper Tests
79What is the value of the integer N? Difficulty: Sub-600 Level, Inequalities, Source: Official Guide, Source: Quant Review 2020, Source: Quant Review 2019, Source: Quant Review 2018, Source: Quant Review 2017, Source: Quant Review 2016
80Bob purchased 18 cans of soda, some of which contained diet soda. How Difficulty: Sub-600 Level, Word Problems, Source: Princeton Review
81What is the value of z in the triangle above? Difficulty: Sub-600 Level, Geometry, Source: Official Guide, Source: OG 2015, Source: OG 12, Source: OG 11, Source: OG 10
82What is the value of t? Difficulty: Sub-600 Level, Algebra, Source: Official Guide, Source: OG 2020, Source: OG 2019, Source: OG 2018, Source: OG 2017
83P is a particle on the circle shown above. What is the length of the p Difficulty: Sub-600 Level, Geometry, Source: Official Guide [Pre-2000]
84What is the average distance that automobile D travels on one full tan Difficulty: Sub-600 Level, Algebra, Word Problems, Source: Official Guide [Pre-2000], Source: OG 1988
85What was Bill's average speed on his trip of 250 miles from New York Difficulty: Sub-600 Level, Distance/Rate Problems, Source: Manhattan GMAT
86If u, v, and w are integers, is u > 0 ? Difficulty: Sub-600 Level, Algebra, Source: GMAT Prep
87What is the value of x? (1) |x| = 4. (2) x^2 = 16. Difficulty: Sub-600 Level, Absolute Values/Modulus, Algebra, Source: Princeton Review
88What is the value of xy ? Difficulty: Sub-600 Level, Algebra, Source: GMAT Hacks
89What is the value of x? (1) 5x - 3 = 7 (2) x/10 = 1/5 Difficulty: Sub-600 Level, Algebra, Source: Official Guide [Pre-2000], Source: OG 1988
90What were the gross revenues from ticket sales for a certain Difficulty: Sub-600 Level, Word Problems, Source: Official Guide, Source: OG 10, Source: Quant Review 2016, Source: Quant Review 2nd, Source: Quant Review 1st
91Water is pumped into a partially filled tank at a constant Difficulty: Sub-600 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
92If a + b + c = 12, what is the value of b? (1) a + b = 8 (2) b + c = 6 Difficulty: Sub-600 Level, Algebra, Source: Official Guide, Source: OG 2020, Source: OG 2019
93If x and y are integers, what is the value of y ? Difficulty: Sub-600 Level, Algebra, Source: Official Guide, Source: OG 10, Source: Quant Review 2017, Source: Quant Review 2016, Source: Quant Review 2nd, Source: Quant Review 1st
94If a school district paid a total of $35 per desk for x desks and a to Difficulty: Sub-600 Level, Word Problems, Source: Official Guide, Source: OG 2020
95If x and y are integers, what is the value of x+y? Difficulty: Sub-600 Level, Inequalities, Source: GMAT Prep
96If machine X ran continuously at a uniform rate to fill Difficulty: Sub-600 Level, Work/Rate Problems
97Is m > k? (1) 3m > 3k (2) 2m > 2k Difficulty: Sub-600 Level, Inequalities, Source: GMAT Prep
98Is x a negative number? Difficulty: Sub-600 Level, Inequalities, Source: Official Guide, Source: OG 2015, Source: OG 12, Source: OG 11, Source: OG 10
99Q is a cube. Find the volume of the cube. Difficulty: Sub-600 Level, Geometry, Source: Magoosh
100Is w + h^4 positive? (1) h is positive (2) w is positive Difficulty: Sub-600 Level, Number Properties, Source: Official Guide, Source: OG 2020, Source: OG 2019, Source: OG 2018, Source: OG 2017

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Originally posted by Bunuel on 21 Aug 2015, 03:43.
Last edited by Bunuel on 01 Jan 2020, 05:45, edited 1 time in total.
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Re: 100 Hardest and easiest questions for DS  [#permalink]

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New post 21 Aug 2015, 05:20
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Re: 100 Hardest and easiest questions for DS  [#permalink]

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New post 07 Dec 2015, 09:09
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is there a dump of all these questions rather than click each link?
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New post 09 Jun 2017, 07:33
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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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New post 29 Jun 2017, 21:33
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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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New post 29 Jun 2017, 21:57
Thanks Buñuel for your efforts.[WHITE SMILING FACE]

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100 Hardest and easiest questions for DS  [#permalink]

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New post 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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New post 29 Jan 2018, 23:02
Hi Bunuel
This is extremely helpful, many thanks :)
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New post 30 May 2018, 09:57
answer choices are not showing. Could anyone let me know to view the answers.
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100 Hardest and easiest questions for DS as of August 2019  [#permalink]

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New post 04 Sep 2019, 17:59
Hi bb

Is there any way for a user to search questions by the level of difficulty (e.g. 85% above) in this forum? I know the difficulty level is generated by an unofficial algorithm, but I feel that the computed level is pretty much reliable indicator.
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Re: 100 Hardest and easiest questions for DS as of August 2019  [#permalink]

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New post 05 Sep 2019, 03:06
chondro48 wrote:
Hi bb

Is there any way for a user to search questions by the level of difficulty (e.g. 85% above) in this forum? I know the difficulty level is generated by an unofficial algorithm, but I feel that the computed level is pretty much reliable indicator.


There are 3 difficulties that are available for search. That’s how the system works - hard, medium, and easy.

https://gmatclub.com/forum/search.php?view=search_tags

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Re: 100 Hardest and easiest questions for DS as of August 2019   [#permalink] 05 Sep 2019, 03:06
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