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

79,057

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

857

24

188,716

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

488,255

by: bb

29 Aug 2025, 13:27

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

3,620

by: bumpbot

31 Dec 2025, 02:48

ER

When cleaning her house, Carlotta discovered an old box of candles and

Sub 505 (Easy) | Combinations

Sub 505 (Easy) | Combinations hide tags

Bunuel

23 Mar 2020, 07:09

22

7

6,386

by: bumpbot

31 Dec 2025, 02:17

ER

What is the remainder when the positive integer n is divided by 6?

Sub 505 (Easy) | Remainders

Sub 505 (Easy) | Remainders hide tags

co801dw

14 Oct 2012, 04:46

84

12

47,702

by: bumpbot

30 Dec 2025, 23:24

ER

At Time T, a boat was sailing- and a bird was flying- due north toward

605-655 (Medium) | Distance and Speed Problems

605-655 (Medium) | Distance and Speed Problems hide tags

PocusFocus

25 Nov 2025, 11:12

19

7

1,777

by: Bunuel

30 Dec 2025, 22:59

ER

Each week a certain salesman is paid a fixed amount equal to

555-605 (Medium) | Word Problems

555-605 (Medium) | Word Problems hide tags

1, 2

summer101

21 Jul 2012, 12:30

308

22

63,914

by: arnab24

30 Dec 2025, 22:50

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If x and y are positive integers, what is the remainder when (x^2 + y^

605-655 (Medium) | Number Properties, Remainders

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

Bunuel

27 Nov 2018, 01:04

31

7

6,298

by: bumpbot

30 Dec 2025, 22:38

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

10,819

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

4,095

by: bumpbot

30 Dec 2025, 11:00

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If p is a prime number greater than 2, what is the value of p ?

505-555 (Easy) | Number Properties

505-555 (Easy) | Number Properties hide tags

1, 2

aljatar

28 Mar 2010, 05:56

143

20

62,931

by: bumpbot

30 Dec 2025, 09:12

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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

2,154

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

5,379

by: bumpbot

29 Dec 2025, 23:58

ER

A trader purchased a Type A gas stove and a Type B gas stove for an

705-805 (Hard) | Word Problems

705-805 (Hard) | Word Problems hide tags

Bunuel

19 Apr 2022, 07:10

6

2

2,430

by: bumpbot

29 Dec 2025, 22:40

ER

The costs of equities of type A and type B (in dollars) are two differ

705-805 (Hard) | Word Problems

705-805 (Hard) | Word Problems hide tags

Bunuel

06 Sep 2019, 10:54

5

4

5,700

by: bumpbot

29 Dec 2025, 22:30

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

4,041

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

4,130

by: KarishmaB

29 Dec 2025, 18:59

-3

In Country X and Country Y, lunch for the vast majority of high...

705-805 (Hard) | Non-Math Related

705-805 (Hard) | Non-Math Related hide tags

az168

25 Dec 2025, 02:48

8

2

1,184

by: Dream009

29 Dec 2025, 11:59

ER

What is the perimeter of triangle PQR ?

505-555 (Easy) | Geometry

505-555 (Easy) | Geometry hide tags

adkikani

04 Jan 2023, 05:54

46

16

11,397

by: bumpbot

29 Dec 2025, 08:33

ER

Last year, in a certain housing development, the average (arithmetic m

555-605 (Medium) | Word Problems

555-605 (Medium) | Word Problems hide tags

1, 2

Bunuel

20 Jun 2018, 00:15

203

20

34,565

by: bumpbot

29 Dec 2025, 08:32

ER

As part of an experiment, Cactus A and Cactus B were regularly watered

555-605 (Medium) | Percent and Interest Problems, Word Problems

555-605 (Medium) | Percent and Interest Problems, Word Problems hide tags

ExpertsGlobal5

23 Nov 2025, 22:51

3

763

by: ExpertsGlobal5

29 Dec 2025, 05:12

ER

There are x people and y chairs in a room where x and y are

805+ (Hard) | Combinations

805+ (Hard) | Combinations hide tags

JusTLucK04

23 Apr 2014, 10:00

242

18

36,355

by: Bunuel

28 Dec 2025, 23:20

ER

If x and y are both positive integers, what is their greatest common

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

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

Bunuel

11 Oct 2016, 02:13

22

11

4,204

by: Bunuel

28 Dec 2025, 11:16

ER

If a certain store purchased a computer game and then sold it for $50

605-655 (Medium) | Word Problems

605-655 (Medium) | Word Problems hide tags

fozzzy

20 Nov 2023, 09:55

99

7

23,477

by: bumpbot

28 Dec 2025, 10:14

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

4,183

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

4,062

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

27,976

by: bumpbot

28 Dec 2025, 08:34

There are three varieties of sugar in a store. Sugar (S1)

605-655 (Medium) | Mixture Problems

605-655 (Medium) | Mixture Problems hide tags

GMATBaumgartner

29 Oct 2012, 05:51

109

11

19,569

by: bumpbot

28 Dec 2025, 08:29

ER

If m is a positive odd integer between 2 and 30, then m is

705-805 (Hard) | Multiples and Factors

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

kashishh

26 Apr 2012, 02:54

91

8

17,511

by: bumpbot

28 Dec 2025, 08:25

ER

Two types of widgets, namely type A and type B, are produced on a mach

605-655 (Medium) | Work and Rate Problems

605-655 (Medium) | Work and Rate Problems hide tags

Bunuel

04 Jun 2024, 01:30

9

2

2,357

by: bumpbot

28 Dec 2025, 08:18

ER

Yesterday Bookstore B sold twice as many softcover books as hardcover

805+ (Hard) | Statistics and Sets Problems, Word Problems

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

1, 2

parkhydel

28 Apr 2020, 04:59

423

20

40,201

by: bumpbot

28 Dec 2025, 08:18

ER

A new cell phone plan is offering pricing based on average monthly use

705-805 (Hard) | Statistics and Sets Problems

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

Bunuel

08 Oct 2014, 14:27

58

10

12,095

by: bumpbot

28 Dec 2025, 06:51

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

767

by: ExpertsGlobal5

28 Dec 2025, 05:17

ER

How many members of the judicial committee voted against the

555-605 (Medium) | Word Problems

555-605 (Medium) | Word Problems hide tags

ExpertsGlobal5

14 Nov 2025, 00:20

2

622

by: ExpertsGlobal5

28 Dec 2025, 04:49

ER

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

14,146

by: bumpbot

28 Dec 2025, 04:06

ER

Each piglet in a litter is fed exactly one-half pound of a mixture of

805+ (Hard) | Fractions and Ratios, Word Problems

805+ (Hard) | Fractions and Ratios, Word Problems hide tags

1, 2

tejal777

07 Feb 2019, 01:10

548

34

35,858

by: bumpbot

28 Dec 2025, 01:16

ER

All the T-shirts a clothing store stocks are plainand they are all in

605-655 (Medium) | Inequalities, Word Problems

605-655 (Medium) | Inequalities, Word Problems hide tags

p456

31 Oct 2023, 08:31

104

9

15,471

by: Dream009

27 Dec 2025, 20:27

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

84,482

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

138,604

by: Dream009

27 Dec 2025, 11:16

ER

If the lengths of two sides of a certain triangle are 5 and 10, what

605-655 (Medium) | Geometry

605-655 (Medium) | Geometry hide tags

surupab

10 Apr 2016, 09:49

123

12

39,953

by: bumpbot

27 Dec 2025, 10:39

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

4,439

by: bumpbot

27 Dec 2025, 09:18

ER

12 Days of Christmas GMAT Competition 2025 - Day 10: Lena keeps all of

805+ (Hard) | Word Problems

805+ (Hard) | Word Problems hide tags

1, 2, 3

Bunuel

26 Dec 2025, 09:00

52

48

1,806

by: Lizaza

27 Dec 2025, 08:58

ER

If d is a positive integer, is d^1/2 an integer?

Sub 505 (Easy) | Number Properties

Sub 505 (Easy) | Number Properties hide tags

Bunuel

26 Feb 2014, 02:26

34

5

19,315

by: bumpbot

27 Dec 2025, 01:56

ER

In triangle ABC, point X is the midpoint of side AC and

705-805 (Hard) | Geometry

705-805 (Hard) | Geometry hide tags

1, 2

yezz

18 Aug 2009, 18:44

1.1k

24

109,714

by: bumpbot

26 Dec 2025, 23:43

ER

Eunice sold several cakes. If each cake sold for either exactly 17 or

605-655 (Medium) | Word Problems

605-655 (Medium) | Word Problems hide tags

1, 2

gmatpapa

18 Feb 2011, 03:45

459

27

48,469

by: AditiDeokar

26 Dec 2025, 23:34

ER

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

Sub 505 (Easy) | Inequalities

Sub 505 (Easy) | Inequalities hide tags

MHIKER

04 Mar 2015, 03:39

29

12

24,086

by: bumpbot

26 Dec 2025, 23:24

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

6,541

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

24,295

by: WiziusCareers1

26 Dec 2025, 22:01

ER

The above equations define how the function f varies with x. Is 0.9 <

805+ (Hard) | Functions and Custom Characters

805+ (Hard) | Functions and Custom Characters hide tags

Bunuel

24 Oct 2022, 01:30

4

2

1,106

by: bumpbot

26 Dec 2025, 09:10

ER

If f(n) denotes the remainder of n^2 divided by k, where n and k are

805+ (Hard) | Functions and Custom Characters

805+ (Hard) | Functions and Custom Characters hide tags

Bunuel

15 Jan 2024, 02:30

12

5

1,844

by: bumpbot

26 Dec 2025, 08:48

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

1,402

by: bumpbot

26 Dec 2025, 08:43

ER

12 Days of Christmas GMAT Competition 2025 - Day 9: John is applying

805+ (Hard) | Probability

805+ (Hard) | Probability hide tags

1, 2

Bunuel

25 Dec 2025, 09:00

46

39

1,563

by: canopyinthecity

26 Dec 2025, 08:10