GMAT Data Sufficiency (DS) Forum - Free Practice Questions

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Complete 1000 GMAT Data Sufficiency Series (DS-1000 Series) Questions

Bunuel

25 Oct 2022, 08:11

179

15

79,910

by: thisisakr

16 Apr 2026, 11:46

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100 Hardest and easiest questions for DS as of April 2026

1, 2

Bunuel

01 Jan 2026, 05:45

858

24

189,025

by: bumpbot

16 Sep 2025, 06:05

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DS Question Directory by Topic and Difficulty

bb

29 Aug 2025, 13:27

1.5k

0

488,746

by: bb

29 Aug 2025, 13:27

ER

Company Y employs c women and d men. Do the women at Company Y earn an

655-705 (Hard) | Word Problems

655-705 (Hard) | Word Problems hide tags

Bunuel

25 Nov 2019, 02:39

13

4

6,470

by: bumpbot

31 Jul 2025, 11:30

ER

If X is a positive integer, what is the remainder when X^2 is divided

655-705 (Hard) | Remainders

655-705 (Hard) | Remainders hide tags

firas92

19 Jun 2019, 07:17

11

4

3,865

by: bumpbot

31 Jul 2025, 06:41

ER

a, b, c, and d are positive integers. If (a + b)(c d) = r, where

655-705 (Hard) | Number Properties

655-705 (Hard) | Number Properties hide tags

sambam

16 Jan 2013, 14:31

62

11

18,277

by: bumpbot

30 Jul 2025, 15:09

ER

If y is an integer and y = |x| + x, is y = 0?

655-705 (Hard) | Absolute Values, Inequalities

655-705 (Hard) | Absolute Values, Inequalities hide tags

Fijisurf

14 Dec 2010, 22:03

172

8

42,264

by: bumpbot

29 Jul 2025, 23:04

ER

If d is the product of exactly two distinct prime factors, what is the

655-705 (Hard) | Number Properties

655-705 (Hard) | Number Properties hide tags

Bunuel

29 Apr 2022, 01:30

6

4

3,668

by: bumpbot

29 Jul 2025, 12:58

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Is xy < 1? (1) |x|y ≠ x|y| (2) (x − y)^2/(x + y)^2 = 1

655-705 (Hard) | Absolute Values, Inequalities

655-705 (Hard) | Absolute Values, Inequalities hide tags

Shrey08

01 Jun 2021, 08:33

10

2

3,349

by: bumpbot

29 Jul 2025, 02:39

ER

A certain calculator is able to display at most 10 digits, so that any

655-705 (Hard) | Word Problems

655-705 (Hard) | Word Problems hide tags

Bunuel

08 Oct 2019, 09:19

10

4

6,597

by: bumpbot

28 Jul 2025, 22:47

ER

How many of the three different positive integers a, b, and c are divi

655-705 (Hard) | Multiples and Factors

655-705 (Hard) | Multiples and Factors hide tags

Bunuel

02 Mar 2022, 03:00

2

3

1,981

by: svsivakrishna

28 Jul 2025, 12:33

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If w < x < y < z, is the average (arithmetic mean) of w, x, y, and z

655-705 (Hard) | Algebra, Inequalities

655-705 (Hard) | Algebra, Inequalities hide tags

Bunuel

06 Dec 2019, 06:05

19

3

10,106

by: deletus

28 Jul 2025, 10:48

ER

A store sells only two types of shirts - branded and non-branded

655-705 (Hard) | Word Problems

655-705 (Hard) | Word Problems hide tags

souvik101990

20 Apr 2018, 01:34

17

9

5,103

by: bumpbot

28 Jul 2025, 04:48

ER

If the digit n is the thousandths digit in the decimal d = 0.75n9, wha

655-705 (Hard) | Fractions and Ratios, Percent and Interest Problems

655-705 (Hard) | Fractions and Ratios, Percent and Interest Problems hide tags

AbdurRakib

22 Jul 2016, 13:08

20

11

6,123

by: bumpbot

27 Jul 2025, 22:03

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Is x% of x% of y equal to x% less than y ? (1) x(x + 100) =

655-705 (Hard) | Arithmetic, Percent and Interest Problems

655-705 (Hard) | Arithmetic, Percent and Interest Problems hide tags

1, 2

zisis

21 Jun 2010, 15:19

136

24

35,293

by: bumpbot

27 Jul 2025, 19:39

ER

30 people in total attended an office party for a

655-705 (Hard) | Word Problems

655-705 (Hard) | Word Problems hide tags

mvivekc

15 Jul 2014, 23:42

49

16

14,523

by: bumpbot

27 Jul 2025, 04:50

ER

A joint debating session was attended by 50 students from a certain ju

655-705 (Hard) | Probability

655-705 (Hard) | Probability hide tags

Bunuel

13 Nov 2019, 02:40

9

2

6,204

by: bumpbot

26 Jul 2025, 08:13

ER

Is x a prime number? (2) y^2 = x (1) 2x/x^2 = 1

655-705 (Hard) | Algebra, Number Properties

655-705 (Hard) | Algebra, Number Properties hide tags

Bunuel

16 Feb 2015, 06:54

39

13

7,842

by: samriddhi1234

26 Jul 2025, 07:48

ER

The average number of students per class at School X is 25 and the ave

655-705 (Hard) | Word Problems

655-705 (Hard) | Word Problems hide tags

CLIMBTHELADDER

10 Jan 2019, 03:06

37

5

9,393

by: bumpbot

25 Jul 2025, 23:28

ER

How many kiloliters of water are in a reservoir?

655-705 (Hard) | Word Problems

655-705 (Hard) | Word Problems hide tags

Bunuel

17 Mar 2025, 00:30

5

1,409

by: Harshita2003

25 Jul 2025, 13:52

ER

S is a set of n consecutive positive integers. Is the mean of the set

655-705 (Hard) | Statistics and Sets Problems

655-705 (Hard) | Statistics and Sets Problems hide tags

Bunuel

08 Oct 2021, 01:30

21

7

8,065

by: bumpbot

25 Jul 2025, 12:02

ER

If a, b, and c are consecutive integers and 0 < a < b < c, is the prod

655-705 (Hard) | Number Properties

655-705 (Hard) | Number Properties hide tags

Carcass

27 Jul 2017, 08:18

185

15

37,255

by: bumpbot

25 Jul 2025, 00:40

ER

The sequence a1,a2,,an, is such that an=(an1)(an3) for

655-705 (Hard) | Sequences

655-705 (Hard) | Sequences hide tags

Bunuel

28 Jan 2015, 07:58

20

10

12,085

by: bumpbot

24 Jul 2025, 12:30

ER

In a class of 80 students at least 40 participated in both cricket and

655-705 (Hard) | Overlapping Sets

655-705 (Hard) | Overlapping Sets hide tags

Bunuel

20 May 2024, 01:30

9

2

2,400

by: bumpbot

23 Jul 2025, 11:13

ER

For a certain city's library, the average cost of purchasing each new

655-705 (Hard) | Word Problems

655-705 (Hard) | Word Problems hide tags

1, 2

AbdurRakib

22 Jun 2017, 15:43

272

21

44,603

by: ManishaPrepMinds

23 Jul 2025, 01:48

ER

If m is the arithmetic mean (average) of 4 integers a, b, c, and d and

655-705 (Hard) | Statistics and Sets Problems

655-705 (Hard) | Statistics and Sets Problems hide tags

Bunuel

10 Mar 2016, 04:56

17

3

3,783

by: bumpbot

23 Jul 2025, 00:33

ER

GMAT Club Olympics 2024 (Day 4): What is the length of a train

655-705 (Hard) | Distance and Speed Problems

655-705 (Hard) | Distance and Speed Problems hide tags

1, 2...5, 6

Bunuel

11 Jul 2024, 07:00

89

105

10,829

by: bumpbot

22 Jul 2025, 07:44

In a city, there are 400 people who are member of one or more of three

655-705 (Hard) | Overlapping Sets

655-705 (Hard) | Overlapping Sets hide tags

amanvermagmat

04 May 2018, 00:29

9

6

2,780

by: bumpbot

21 Jul 2025, 10:15

ER

Given that a, b, c, and, d are non-negative integers, is the

655-705 (Hard) | Algebra, Number Properties

655-705 (Hard) | Algebra, Number Properties hide tags

enigma123

09 May 2020, 12:09

63

12

17,184

by: bumpbot

21 Jul 2025, 02:09

ER

What is the average of A, B, and C?

655-705 (Hard) | Algebra

655-705 (Hard) | Algebra hide tags

ocavon

25 Jun 2015, 09:25

15

2

8,125

by: bumpbot

20 Jul 2025, 23:20

ER

Is x >= 0 ?

655-705 (Hard) | Absolute Values, Algebra

655-705 (Hard) | Absolute Values, Algebra hide tags

KrishnaK

17 Jan 2011, 11:12

10

4

6,264

by: bumpbot

20 Jul 2025, 19:19

ER

Is x < y?

655-705 (Hard) | Algebra

655-705 (Hard) | Algebra hide tags

Puneethrao

01 Nov 2013, 01:01

14

8

6,316

by: bumpbot

20 Jul 2025, 19:19

ER

What is the value of x? (1) |2x − 1| = 3x + 6 (2) x^2 = 1

655-705 (Hard) | Absolute Values, Algebra

655-705 (Hard) | Absolute Values, Algebra hide tags

Bunuel

24 Apr 2017, 04:21

39

8

8,409

by: bumpbot

20 Jul 2025, 17:49

ER

What is the value of x? 1) x^2 + x + 10 = 16 2) x = 4y^4+2y^2+2

655-705 (Hard) | Algebra

655-705 (Hard) | Algebra hide tags

GMAT4937

26 Jan 2016, 14:15

140

17

25,057

by: bumpbot

20 Jul 2025, 17:31

ER

A certain car rental agency rented 25 vehicles yesterday, each of whic

655-705 (Hard) | Word Problems

655-705 (Hard) | Word Problems hide tags

Bunuel

17 Apr 2015, 04:55

30

11

6,302

by: bumpbot

20 Jul 2025, 17:20

ER

What is the value of x?

655-705 (Hard) | Algebra

655-705 (Hard) | Algebra hide tags

Shalabh09

01 May 2015, 06:32

17

8

4,169

by: bumpbot

19 Jul 2025, 19:10

ER

If z=(m + m/3)(n+2/(n^(-1)) and mn#0, what is the value of Z?

655-705 (Hard) | Algebra

655-705 (Hard) | Algebra hide tags

harish1986

13 Jan 2016, 10:47

11

10

7,497

by: bumpbot

19 Jul 2025, 18:14

ER

Does 4^a = 4^-a + b? (1) 16^a = 1 + ((2^2a) / (b^-1)) (2) a

655-705 (Hard) | Algebra

655-705 (Hard) | Algebra hide tags

rjkaufman21

14 Sep 2011, 10:31

14

10

5,903

by: bumpbot

19 Jul 2025, 18:13

ER

If n is a positive integer greater than 1, is (n + 11)^(1/2) = n^(1/2)

655-705 (Hard) | Algebra, Number Properties

655-705 (Hard) | Algebra, Number Properties hide tags

Viserion99

24 May 2018, 21:34

28

15

5,619

by: bumpbot

19 Jul 2025, 18:11

ER

What is the value of (2a + 6a − 3b)/(2a − b)?

655-705 (Hard) | Algebra

655-705 (Hard) | Algebra hide tags

Bunuel

01 Sep 2021, 04:30

7

6

3,617

by: bumpbot

19 Jul 2025, 18:09

ER

If a, b, and c are positive integers, with a < b < c, are a, b, and c

655-705 (Hard) | Algebra, Number Properties

655-705 (Hard) | Algebra, Number Properties hide tags

SMAbbas

02 Oct 2020, 02:07

86

13

23,215

by: bumpbot

19 Jul 2025, 18:04

ER

The workers at a large construction company reported x

655-705 (Hard) | Algebra, Percent and Interest Problems

655-705 (Hard) | Algebra, Percent and Interest Problems hide tags

rpamecha

14 Apr 2012, 11:57

32

4

9,922

by: bumpbot

19 Jul 2025, 18:02

ER

Is x and y are positive integers, what is the value of x?

655-705 (Hard) | Algebra

655-705 (Hard) | Algebra hide tags

Bunuel

08 Sep 2021, 03:30

10

3

2,462

by: bumpbot

19 Jul 2025, 17:57

ER

If x and y are positive integers, what is the value of (x + y)?

655-705 (Hard) | Algebra, Inequalities

655-705 (Hard) | Algebra, Inequalities hide tags

Bunuel

09 Jun 2015, 02:37

8

9

5,722

by: bumpbot

19 Jul 2025, 17:53

ER

In the rectangular coordinate system, are the points (r,s) and (u,v)

655-705 (Hard) | Coordinate Plane

655-705 (Hard) | Coordinate Plane hide tags

1, 2

calvinhobbes

06 Feb 2019, 04:09

318

20

42,482

by: bumpbot

19 Jul 2025, 16:28

ER

If ab#0 and a # -3b, what is the value of (4a + 6b)/(a + 3b)

655-705 (Hard) | Algebra

655-705 (Hard) | Algebra hide tags

Bunuel

17 Nov 2014, 12:45

25

7

8,055

by: bumpbot

19 Jul 2025, 14:30

ER

If x^2/9 4/y^2 = 12, what is the value of x?

655-705 (Hard) | Algebra

655-705 (Hard) | Algebra hide tags

kairoshan

30 May 2022, 01:14

102

4

26,786

by: bumpbot

18 Jul 2025, 23:32

ER

If x is an integer greater than 1, is x equal to the 12th

655-705 (Hard) | Exponents, Number Properties

655-705 (Hard) | Exponents, Number Properties hide tags

bhupi

23 Jun 2012, 10:44

443

18

49,699

by: bumpbot

18 Jul 2025, 05:55

ER

What is the median duration of a client engagement, which are billed

655-705 (Hard) | Statistics and Sets Problems

655-705 (Hard) | Statistics and Sets Problems hide tags

Bunuel

16 Aug 2019, 02:39

6

4

2,183

by: bumpbot

18 Jul 2025, 04:48

ER

Is the three-digit number n less than 550?

655-705 (Hard) | Number Properties

655-705 (Hard) | Number Properties hide tags

LM

06 May 2010, 12:31

79

11

23,731

by: bumpbot

18 Jul 2025, 03:35

ER

Is x^3 < x? (1) 1/x > x (2) x^2 > x

655-705 (Hard) | Absolute Values, Inequalities

655-705 (Hard) | Absolute Values, Inequalities hide tags

GMATinsight

07 Dec 2021, 01:17

4

3

1,614

by: bumpbot

17 Jul 2025, 17:39

ER

Is |x| = y + 1? (1) y + x = -1 (2) x < 0

655-705 (Hard) | Absolute Values

655-705 (Hard) | Absolute Values hide tags

Bunuel

16 Sep 2023, 05:45

2

1,367

by: rajkoushik17

17 Jul 2025, 17:28

ER

If c and d are integers, is c even?

655-705 (Hard) | Number Properties

655-705 (Hard) | Number Properties hide tags

1, 2

zaarathelab

30 Jan 2010, 13:15

185

20

30,866

by: agrasan

16 Jul 2025, 20:47