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

79,602

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

188,965

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

488,659

by: bb

29 Aug 2025, 13:27

ER

Is a^3 + b^5 > c^4?

655-705 (Hard) | Inequalities

655-705 (Hard) | Inequalities hide tags

Bunuel

29 Apr 2016, 04:02

6

2,641

by: bumpbot

03 Jan 2026, 04:59

ER

Last summer, as with every summer, Oshin and Reena made exactly one

655-705 (Hard) | Non-Math Related, Word Problems

655-705 (Hard) | Non-Math Related, Word Problems hide tags

GMATCoachBen

06 Feb 2024, 18:42

117

10

12,677

by: bumpbot

03 Jan 2026, 00:12

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If p = (n)(5^x)(3^k), is p divisible by 10?

655-705 (Hard) | Exponents, Multiples and Factors

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

Bunuel

04 Feb 2015, 08:42

25

5

5,191

by: bumpbot

02 Jan 2026, 10:34

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Can the positive integer y be expressed as the product of two integers

655-705 (Hard) | Number Properties

655-705 (Hard) | Number Properties hide tags

Bunuel

11 Jan 2015, 12:38

6

11

4,874

by: bumpbot

02 Jan 2026, 02:49

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Is x greater than zero?

655-705 (Hard) | Inequalities

655-705 (Hard) | Inequalities hide tags

Tan2017

11 Jul 2017, 01:33

5

2

2,168

by: bumpbot

02 Jan 2026, 02:32

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Is x < 0 ? (1) x^3(1 - x^2) < 0 (2) x^2 - 1 < 0

655-705 (Hard) | Inequalities

655-705 (Hard) | Inequalities hide tags

ashiima

10 Dec 2011, 17:52

129

13

18,509

by: bumpbot

02 Jan 2026, 00:57

ER

Economists work with supply and demand curves that show the price P

655-705 (Hard) | Coordinate Plane, Word Problems

655-705 (Hard) | Coordinate Plane, Word Problems hide tags

Fish181

07 Apr 2024, 11:03

63

6

12,440

by: bumpbot

01 Jan 2026, 07:50

ER

A certain list consists of 3 different numbers. Does the median of the

655-705 (Hard) | Statistics and Sets Problems

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

1, 2

karovd

02 Jul 2021, 02:12

965

25

101,506

by: bumpbot

01 Jan 2026, 07:07

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For a set X containing n integers, is the mean even? (1) n

655-705 (Hard) | Statistics and Sets Problems

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

kannn

09 Mar 2011, 10:15

64

12

16,914

by: bumpbot

01 Jan 2026, 06:57

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Is |x - y| > |x - z| ? (1) |y| > |z| (1) x > 0

655-705 (Hard) | Absolute Values, Inequalities

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

Bunuel

18 Nov 2022, 10:56

5

3

1,457

by: bumpbot

01 Jan 2026, 05:30

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If a = b/c, is a > b? (1) 0 < c < 1 (2) a > 0

655-705 (Hard) | Inequalities

655-705 (Hard) | Inequalities hide tags

guerrero25

27 Sep 2023, 03:24

4

2

4,131

by: bumpbot

01 Jan 2026, 05:21

ER

If x and y are prime integers, what is x + y?

655-705 (Hard) | Number Properties

655-705 (Hard) | Number Properties hide tags

Bunuel

12 Jul 2013, 19:51

14

19

6,544

by: bumpbot

01 Jan 2026, 05:14

ER

Is a^b > b^a?

655-705 (Hard) | Algebra, Inequalities

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

fozzzy

20 May 2013, 23:31

6

4

3,228

by: bumpbot

31 Dec 2025, 03:23

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If x and y are non-zero integers, is x divisible by 11?

655-705 (Hard) | Multiples and Factors

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

RoberJunior

09 Mar 2016, 05:07

9

4

4,682

by: bumpbot

31 Dec 2025, 03:13

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Is a + b < c - d?

655-705 (Hard) | Inequalities

655-705 (Hard) | Inequalities hide tags

BoomHH

06 Feb 2017, 01:00

6

3

2,211

by: bumpbot

31 Dec 2025, 03:03

ER

If x is a perfect square greater than 1, what is the value of x?

655-705 (Hard) | Multiples and Factors, Number Properties

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

Bunuel

13 Dec 2016, 10:56

4

3,631

by: bumpbot

31 Dec 2025, 02:48

ER

List A contains 5 positive integers, and the average (arithmetic mean)

655-705 (Hard) | Statistics and Sets Problems

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

Archit143

28 Dec 2012, 19:12

56

15

10,833

by: bumpbot

30 Dec 2025, 22:05

ER

Two trains travel at constant speeds. What is the ratio of the slower

655-705 (Hard) | Distance and Speed Problems

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

fskilnik

26 Mar 2019, 10:58

22

4

4,109

by: bumpbot

30 Dec 2025, 11:00

ER

If n is positive, is n an integer?

655-705 (Hard) | Inequalities, Number Properties

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

Bunuel

13 Jan 2017, 07:05

1

3

2,164

by: bumpbot

30 Dec 2025, 00:28

ER

Is a four digit number "abcd" divisible by 9?

655-705 (Hard) | Number Properties

655-705 (Hard) | Number Properties hide tags

M3sSiaH

13 Apr 2015, 03:54

10

8

5,388

by: bumpbot

29 Dec 2025, 23:58

ER

Are the standard deviations of set A and set B the same? 1) n=6 2) S

655-705 (Hard) | Statistics and Sets Problems

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

BillyZ

21 Feb 2017, 17:46

29

4

4,048

by: flippedeclipse

29 Dec 2025, 20:49

ER

Each of the 75 professionals attending a conference is either a chef

655-705 (Hard) | Probability

655-705 (Hard) | Probability hide tags

Bunuel

06 Feb 2023, 07:10

22

6

4,149

by: KarishmaB

29 Dec 2025, 18:59

ER

12 Days of Christmas GMAT Competition - Day 6: A business exports

655-705 (Hard) | Overlapping Sets

655-705 (Hard) | Overlapping Sets hide tags

1, 2, 3

Bunuel

23 Dec 2024, 09:00

56

59

4,220

by: bumpbot

28 Dec 2025, 09:06

ER

12 Days of Christmas GMAT Competition - Day 9: If Mary's balance

655-705 (Hard) | Word Problems

655-705 (Hard) | Word Problems hide tags

Bunuel

26 Dec 2024, 09:00

24

14

4,077

by: bumpbot

28 Dec 2025, 08:45

ER

If the area of triangular region RST is 25, what is the perimeter

655-705 (Hard) | Geometry

655-705 (Hard) | Geometry hide tags

prasannar

01 Oct 2022, 09:30

100

16

28,009

by: bumpbot

28 Dec 2025, 08:34

ER

A freelancer charged p dollars per hour for a specific project in

655-705 (Hard) | Word Problems

655-705 (Hard) | Word Problems hide tags

ExpertsGlobal5

03 Dec 2025, 22:11

2

774

by: ExpertsGlobal5

28 Dec 2025, 05:17

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If x and y are positive integers, is x an even integer?

655-705 (Hard) | Number Properties

655-705 (Hard) | Number Properties hide tags

udaymathapati

08 Mar 2011, 13:18

54

6

14,173

by: bumpbot

28 Dec 2025, 04:06

ER

A company makes and sells two products, P and Q. The costs per unit of

655-705 (Hard) | Word Problems

655-705 (Hard) | Word Problems hide tags

Bunuel

25 Oct 2015, 09:04

437

19

84,540

by: Dream009

27 Dec 2025, 19:37

ER

Are at least 10 percent of the people in Country X who are 65 years

655-705 (Hard) | Statistics and Sets Problems, Word Problems

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

1, 2

LM

21 Jan 2018, 23:45

1.0k

35

138,740

by: Dream009

27 Dec 2025, 11:16

ER

12 Days of Christmas GMAT Competition - Day 7: A certain online store

655-705 (Hard) | Word Problems

655-705 (Hard) | Word Problems hide tags

1, 2, 3, 4

Bunuel

24 Dec 2024, 09:00

61

65

4,463

by: bumpbot

27 Dec 2025, 09:18

ER

If x y, and y = (x^2 - y^2)/(x-y), then what is the value of y ?

655-705 (Hard) | Algebra

655-705 (Hard) | Algebra hide tags

kenman

16 Oct 2011, 04:07

14

2

6,559

by: WiziusCareers1

26 Dec 2025, 22:06

ER

If the slopes of the line l1 and l2 are of the same sign, is

655-705 (Hard) | Coordinate Plane

655-705 (Hard) | Coordinate Plane hide tags

kenguva

30 Jan 2012, 04:18

49

13

24,310

by: WiziusCareers1

26 Dec 2025, 22:01

ER

Jane started driving in the morning at a constant speed, after one and

655-705 (Hard) | Distance and Speed Problems

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

Bunuel

03 Dec 2024, 01:30

10

6

1,416

by: bumpbot

26 Dec 2025, 08:43

ER

Is a^8 < 25?

655-705 (Hard) | Inequalities

655-705 (Hard) | Inequalities hide tags

EBITDA

12 Jul 2016, 04:10

2

4

2,476

by: bumpbot

26 Dec 2025, 03:02

ER

Mr. X paid for a painting using currency notes of denominations 1$, 2$

655-705 (Hard) | Word Problems

655-705 (Hard) | Word Problems hide tags

VenoMfTw

16 Aug 2015, 11:32

4

3

3,487

by: bumpbot

25 Dec 2025, 07:51

ER

ab + cd = efg

655-705 (Hard) | Algebra, Number Properties

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

PrepTap

04 May 2015, 05:46

14

6

6,096

by: bumpbot

25 Dec 2025, 07:42

The symbols, #, &, @, $, represent non zero digits. If #2

655-705 (Hard) | Arithmetic

655-705 (Hard) | Arithmetic hide tags

Thoughtosphere

06 Mar 2013, 03:12

2

9

4,000

by: bumpbot

25 Dec 2025, 07:26

ER

12 Days of Christmas GMAT Competition 2025 - Day 7: At a customer

655-705 (Hard) | Word Problems

655-705 (Hard) | Word Problems hide tags

1, 2, 3

Bunuel

23 Dec 2025, 09:00

55

58

1,834

by: firefox300

24 Dec 2025, 08:36

ER

A retailer sells only radios and clocks. If she currently has 44 total

655-705 (Hard) | Word Problems

655-705 (Hard) | Word Problems hide tags

jlgdr

18 Sep 2013, 15:50

47

12

11,931

by: bumpbot

24 Dec 2025, 05:31

ER

12 Days of Christmas GMAT Competition - Day 5: What is the percentage

655-705 (Hard) | Mixture Problems

655-705 (Hard) | Mixture Problems hide tags

Bunuel

18 Dec 2021, 07:00

12

5

6,312

by: bumpbot

23 Dec 2025, 20:42

ER

Joe bought only twenty cent stamps and thirty cent stamps. How many

655-705 (Hard) | Word Problems

655-705 (Hard) | Word Problems hide tags

rite2deepti

13 Dec 2010, 06:53

103

11

21,212

by: bumpbot

23 Dec 2025, 13:20

ER

If x is positive integer, is x^4 - 1 divisible by 5?

655-705 (Hard) | Multiples and Factors, Remainders

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

Bunuel

22 Nov 2019, 02:40

30

16

8,938

by: bumpbot

23 Dec 2025, 11:22

ER

12 Days of Christmas GMAT Competition 2025 - Day 6: "Sweetness" is

655-705 (Hard) | Mixture Problems

655-705 (Hard) | Mixture Problems hide tags

1, 2, 3

Bunuel

22 Dec 2025, 09:00

49

59

1,678

by: Sumimasen

23 Dec 2025, 08:53

ER

‎[x] denotes to be the least integer no less than x. Is [2d]

655-705 (Hard) | Functions and Custom Characters

655-705 (Hard) | Functions and Custom Characters hide tags

Smita04

17 Apr 2012, 19:53

177

13

25,086

by: bumpbot

23 Dec 2025, 08:42

ER

If a and b are integers, and a not= b, is |a|b > 0? (1)

655-705 (Hard) | Absolute Values, Inequalities

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

mm007

20 Dec 2006, 15:21

82

14

31,901

by: bumpbot

22 Dec 2025, 14:25

ER

Rick is in a room with 4 other people. If the other people weigh 100,

655-705 (Hard) | Word Problems

655-705 (Hard) | Word Problems hide tags

Bunuel

29 Jul 2020, 03:28

12

7

2,806

by: bumpbot

22 Dec 2025, 01:02

ER

50 machines work in parallel and no-stop. Each machine can produce

655-705 (Hard) | Work and Rate Problems

655-705 (Hard) | Work and Rate Problems hide tags

Bunuel

04 Oct 2024, 01:30

13

7

2,085

by: Bunuel

21 Dec 2025, 00:19

ER

The infinite (serial) sequence a1, a2, , an, is such that a1 = x, a

655-705 (Hard) | Sequences

655-705 (Hard) | Sequences hide tags

Bunuel

07 Apr 2015, 06:16

28

9

11,079

by: bumpbot

19 Dec 2025, 21:23

ER

If xy = - 6, what is the value of xy(x+y)?

655-705 (Hard) | Algebra

655-705 (Hard) | Algebra hide tags

Bunuel

29 Oct 2021, 10:56

225

19

57,268

by: bumpbot

19 Dec 2025, 09:13

ER

12 Days of Christmas GMAT Competition 2025 - Day 4: At a certain

655-705 (Hard) | Overlapping Sets

655-705 (Hard) | Overlapping Sets hide tags

1, 2, 3, 4

Bunuel

18 Dec 2025, 09:00

56

65

1,987

by: sriharsha4444

19 Dec 2025, 08:59