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

176

15

78,605

by: thisisakr

16 Apr 2026, 11:46

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100 Hardest and easiest questions for DS as of March 2026

1, 2

Bunuel

01 Jan 2026, 05:45

854

24

188,448

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

487,810

by: bb

29 Aug 2025, 13:27

ER

Is n/18 an integer? (1) 5n/18 is an integer. (2) 3n/18 is an integer.

805+ (Hard) | Multiples and Factors, Number Properties

805+ (Hard) | Multiples and Factors, Number Properties hide tags

1, 2

shinewine

29 Aug 2006, 14:07

324

21

48,916

by: bumpbot

22 Oct 2025, 00:58

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Is 1/p > r/(r^2 + 2) ? (1) p = r (2) r > 0

605-655 (Medium) | Inequalities

605-655 (Medium) | Inequalities hide tags

tejal777

16 Oct 2019, 05:22

383

17

50,213

by: Bunuel

17 Oct 2025, 02:32

ER

A drawer contains 8 socks, and 2 socks are selected at random without

705-805 (Hard) | Probability

705-805 (Hard) | Probability hide tags

Economist

12 Nov 2009, 09:35

164

15

46,340

by: bumpbot

14 Oct 2025, 10:57

ER

Is x an integer?

655-705 (Hard) | Number Properties

655-705 (Hard) | Number Properties hide tags

camiu

25 Jun 2015, 01:43

22

11

7,542

by: bumpbot

13 Oct 2025, 23:41

ER

At a certain bookstore, each notepad costs x dollars and

705-805 (Hard) | Word Problems

705-805 (Hard) | Word Problems hide tags

metallicafan

01 Nov 2010, 22:19

152

15

28,808

by: bumpbot

12 Oct 2025, 09:29

ER

If n is an integer, then n is divisible by how many positive integers?

505-555 (Easy) | Multiples and Factors, Number Properties

505-555 (Easy) | Multiples and Factors, Number Properties hide tags

Bunuel

24 Dec 2013, 03:48

121

15

36,278

by: Bunuel

10 Oct 2025, 00:46

ER

If positive integer x is a multiple of 6 and positive integer y is a

555-605 (Medium) | Multiples and Factors

555-605 (Medium) | Multiples and Factors hide tags

1, 2

rahulraao

09 Oct 2005, 01:53

245

21

48,061

by: bumpbot

09 Oct 2025, 12:08

ER

If x is a positive integer, what is the value of (x + 24)^(1/2) - x

605-655 (Medium) | Number Properties

605-655 (Medium) | Number Properties hide tags

Bunuel

16 Jun 2016, 05:48

312

15

64,684

by: bumpbot

09 Oct 2025, 05:06

ER

List M (not shown) consists of 8 different integers, each of which is

705-805 (Hard) | Statistics and Sets Problems

705-805 (Hard) | Statistics and Sets Problems hide tags

pnf619

14 Dec 2018, 04:16

581

19

52,559

by: Aboyhasnoname

07 Oct 2025, 03:43

ER

If l and k are lines in the xy-plane, is the product of the slopes of

Sub 505 (Easy) | Coordinate Plane

Sub 505 (Easy) | Coordinate Plane hide tags

1, 2

blog

31 Jan 2008, 19:24

77

20

38,265

by: bumpbot

06 Oct 2025, 23:45

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Two positive integers a and b are divisible by 5, which is their

805+ (Hard) | Number Properties

805+ (Hard) | Number Properties hide tags

1, 2

EgmatQuantExpert

13 Aug 2018, 03:10

265

27

42,917

by: bumpbot

04 Oct 2025, 09:50

ER

The 10 students in a history class recently took an examination. What

555-605 (Medium) | Statistics and Sets Problems

555-605 (Medium) | Statistics and Sets Problems hide tags

1, 2

Bunuel

24 Jun 2018, 21:15

369

21

49,057

by: anushree01

03 Oct 2025, 20:35

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A set consists of n consecutive integers in which the smalle

805+ (Hard) | Statistics and Sets Problems

805+ (Hard) | Statistics and Sets Problems hide tags

1, 2

vibhav

21 Jul 2013, 07:22

221

20

23,358

by: bumpbot

30 Sep 2025, 06:20

ER

Quick Sell Outlet sold a total of 40 televisions, each of

655-705 (Hard) | Statistics and Sets Problems

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

1, 2

bulletpoint

14 Oct 2013, 08:51

625

22

84,193

by: egmat

26 Sep 2025, 03:28

ER

If r and s are positive numbers and θ is one of the operations, +, −,

505-555 (Easy) | Functions and Custom Characters, Number Properties

505-555 (Easy) | Functions and Custom Characters, Number Properties hide tags

Bunuel

26 Apr 2019, 02:30

39

16

21,076

by: bumpbot

24 Sep 2025, 07:58

ER

If set S consists of even number of integers, is the median

805+ (Hard) | Statistics and Sets Problems

805+ (Hard) | Statistics and Sets Problems hide tags

1, 2

mirhaque

21 Feb 2005, 05:53

82

28

23,107

by: bumpbot

23 Sep 2025, 23:03

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What is x? (1) |x| < 2 (2) |x| = 3x – 2

655-705 (Hard) | Absolute Values, Inequalities

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

rohitgoel15

20 Mar 2020, 06:28

267

15

63,395

by: bumpbot

23 Sep 2025, 16:58

ER

If both x and y are nonzero numbers, what is the value of y/x?

505-555 (Easy) | Algebra

505-555 (Easy) | Algebra hide tags

Bunuel

09 Jan 2014, 06:52

65

17

27,475

by: bumpbot

18 Sep 2025, 02:06

ER

If r is a constant a_n = rn for all positive integers n, for how many

505-555 (Easy) | Sequences

505-555 (Easy) | Sequences hide tags

Fedemaravilla

27 Nov 2017, 03:27

51

15

16,454

by: AdarshSambare

17 Sep 2025, 02:46

ER

If a and b are integers, and |a| > |b|, is a |b| < a

805+ (Hard) | Absolute Values, Inequalities

805+ (Hard) | Absolute Values, Inequalities hide tags

thailandvc

11 Sep 2009, 01:57

168

17

47,181

by: bumpbot

10 Sep 2025, 02:11

ER

In the multiplication table above, each letter represents an integer.

555-605 (Medium) | Arithmetic, Number Properties

555-605 (Medium) | Arithmetic, Number Properties hide tags

1, 2

AbdurRakib

24 Jun 2017, 04:01

376

24

50,115

by: bumpbot

08 Sep 2025, 11:56

ER

During an experiment, some water was removed from each of

555-605 (Medium) | Statistics and Sets Problems

555-605 (Medium) | Statistics and Sets Problems hide tags

vaivish1723

13 May 2010, 04:07

429

19

72,247

by: bumpbot

07 Sep 2025, 05:13

ER

Is x > y ? (1) ax > ay (2) a^2*x > a^2*y

505-555 (Easy) | Inequalities

505-555 (Easy) | Inequalities hide tags

Jivana

28 Jun 2021, 00:11

84

14

32,497

by: bumpbot

04 Sep 2025, 07:47

ER

In order to play a certain game, 24 players must be split in

655-705 (Hard) | Multiples and Factors

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

enigma123

19 Jan 2012, 17:14

40

18

19,396

by: kabirgandhi

02 Sep 2025, 22:00

ER

Is x greater than 1? (1) 1/x >1 (2) 1/x^5 > 1/x^3

655-705 (Hard) | Inequalities

655-705 (Hard) | Inequalities hide tags

1, 2

sandal85

06 Jun 2012, 21:20

67

20

26,993

by: bumpbot

27 Aug 2025, 13:09

ER

Six numbers are randomly selected and placed within a set. If the set

805+ (Hard) | Statistics and Sets Problems

805+ (Hard) | Statistics and Sets Problems hide tags

Bunuel

10 Jun 2018, 05:00

30

16

4,255

by: bumpbot

24 Aug 2025, 04:27

ER

Maria left home 1/4 hour after her husband and drove over the same

555-605 (Medium) | Distance and Speed Problems

555-605 (Medium) | Distance and Speed Problems hide tags

parkhydel

28 Apr 2020, 04:45

226

18

24,840

by: Dream009

21 Aug 2025, 23:50

ER

If n is an integer, is n even?

Sub 505 (Easy) | Number Properties

Sub 505 (Easy) | Number Properties hide tags

NoHalfMeasures

10 Aug 2014, 12:22

12

13

12,011

by: Bunuel

20 Aug 2025, 02:54

ER

If w + x < 0, is w - y > 0 ? (1) x + y < 0 (2) y < x < w

655-705 (Hard) | Inequalities

655-705 (Hard) | Inequalities hide tags

gmatbull

04 Dec 2010, 06:33

128

18

29,296

by: bumpbot

14 Aug 2025, 05:32

ER

Three children inherited a total of X dollars. If the oldest child inh

Sub 505 (Easy) | Algebra, Word Problems

Sub 505 (Easy) | Algebra, Word Problems hide tags

Bunuel

26 Apr 2019, 02:04

35

10

17,721

by: GmatKnightTutor

09 Aug 2025, 01:15

ER

If x is negative, is x < –3 ? (1) x^2 > 9 (2) x^3 < –9

605-655 (Medium) | Inequalities

605-655 (Medium) | Inequalities hide tags

surendar26

02 Jul 2021, 02:15

461

13

67,923

by: bumpbot

07 Aug 2025, 08:07

ER

Is z > 0? (1) (z + 1)(z)(z - 1) < 0 (2) |z| < 1

655-705 (Hard) | Absolute Values, Inequalities

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

1, 2

ColdSushi

18 Mar 2015, 20:31

93

23

14,095

by: bumpbot

07 Aug 2025, 03:39

ER

If the least common multiple of integers x and y is 840,

605-655 (Medium) | Arithmetic, Number Properties

605-655 (Medium) | Arithmetic, Number Properties hide tags

1, 2

rxs0005

03 Dec 2010, 18:09

81

24

22,240

by: bumpbot

03 Aug 2025, 18:52

ER

Ralph is giving out Valentine’s Day cards to his friends.

705-805 (Hard) | Word Problems

705-805 (Hard) | Word Problems hide tags

1, 2

honchos

16 Sep 2013, 02:24

52

20

9,155

by: bumpbot

02 Aug 2025, 15:42

ER

In the xy-plane, if line k has negative slope and passes through the

705-805 (Hard) | Coordinate Plane

705-805 (Hard) | Coordinate Plane hide tags

Bunuel

02 Jul 2012, 02:45

554

13

63,751

by: bumpbot

27 Jul 2025, 03:34

ER

In a certain group of 50 people, how many are doctors who have a law

Sub 505 (Easy) | Overlapping Sets

Sub 505 (Easy) | Overlapping Sets hide tags

1, 2

Bunuel

26 Jun 2017, 02:21

148

20

32,843

by: KalleAbhi

19 Jul 2025, 04:51

ER

If n is an integer, is (0.1)^n greater than (10)^n?

Sub 505 (Easy) | Exponents, Inequalities

Sub 505 (Easy) | Exponents, Inequalities hide tags

Bunuel

14 May 2023, 14:43

186

13

43,445

by: bumpbot

19 Jul 2025, 04:27

ER

If x is a positive integer, is x-1 a factor of 104?

805+ (Hard) | Multiples and Factors

805+ (Hard) | Multiples and Factors hide tags

enigma123

22 Jan 2012, 16:44

89

14

22,303

by: bumpbot

15 Jul 2025, 09:57

ER

If y is an integer and x + y + z is odd, is y even?

705-805 (Hard) | Number Properties

705-805 (Hard) | Number Properties hide tags

Bunuel

18 Feb 2015, 04:45

29

18

6,205

by: bumpbot

12 Jul 2025, 10:01

ER

A certain investment earned a fixed rate of 4 percent interest per yea

Sub 505 (Easy) | Percent and Interest Problems

Sub 505 (Easy) | Percent and Interest Problems hide tags

Bunuel

21 Oct 2015, 21:37

147

15

37,941

by: bumpbot

08 Jul 2025, 12:39

ER

A lottery is played by selecting X distinct single digit numbers from

555-605 (Medium) | Combinations, Probability

555-605 (Medium) | Combinations, Probability hide tags

danzig

05 Feb 2013, 08:40

129

14

29,147

by: bumpbot

06 Jul 2025, 02:33

ER

What is the probability of landing on tails at least once in

555-605 (Medium) | Probability

555-605 (Medium) | Probability hide tags

guddo

14 Aug 2024, 03:56

24

13

5,882

by: Bunuel

04 Jul 2025, 12:41

ER

Is 1/(a - b) > b - a ? (1) a < b (2) 1 < |a - b|

655-705 (Hard) | Absolute Values, Inequalities

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

Bunuel

28 Feb 2014, 04:09

545

16

61,397

by: bumpbot

04 Jul 2025, 00:27

ER

When the digits of two-digit, positive integer M are reversed, the res

705-805 (Hard) | Multiples and Factors, Number Properties

705-805 (Hard) | Multiples and Factors, Number Properties hide tags

pratikshr

30 Sep 2014, 06:56

309

17

41,966

by: bumpbot

02 Jul 2025, 13:56

ER

Last school year, each of the 200 students at a certain high school at

555-605 (Medium) | Statistics and Sets Problems, Word Problems

555-605 (Medium) | Statistics and Sets Problems, Word Problems hide tags

1, 2

Bunuel

26 Jun 2017, 02:56

456

25

55,402

by: bumpbot

01 Jul 2025, 10:27

ER

If 0 < x < y, is y - x < 0.00005? (1) x > 1/60,000 (2) y < 1/15,000

555-605 (Medium) | Inequalities

555-605 (Medium) | Inequalities hide tags

imhimanshu

05 Apr 2012, 09:26

253

13

29,707

by: bumpbot

26 Jun 2025, 21:22

ER

If a car traveled from Townsend to Smallville at an average

555-605 (Medium) | Distance and Speed Problems

555-605 (Medium) | Distance and Speed Problems hide tags

enigma123

07 Nov 2011, 14:46

175

19

30,172

by: Bunuel

24 Jun 2025, 23:56

ER

Is integer k a prime number?

705-805 (Hard) | Number Properties

705-805 (Hard) | Number Properties hide tags

Bunuel

29 Sep 2015, 05:13

52

18

14,315

by: findingmyself

23 Jun 2025, 05:12

ER

A company produces a certain toy in only 2 sizes, small or large, and

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

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

Bunuel

26 Apr 2019, 02:51

382

14

45,288

by: sahilsehdev97

11 Jun 2025, 03:34

ER

Is z an even integer? (1) z/2 is an even integer (2) 3z is an even

655-705 (Hard) | Number Properties

655-705 (Hard) | Number Properties hide tags

fluke

05 May 2011, 00:27

81

15

16,633

by: bumpbot

07 Jun 2025, 10:51