GMAT Data Sufficiency (DS) Forum - Free Practice Questions

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

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Bunuel

25 Oct 2022, 08:11

189

15

89,162

by: thisisakr

16 Apr 2026, 11:46

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100 Hardest and easiest questions for DS as of June 2026

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1, 2

Bunuel

01 Jan 2026, 05:45

872

24

194,299

by: bumpbot

16 Sep 2025, 06:05

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DS Question Directory by Topic and Difficulty

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bb

23 Aug 2026, 13:03

1.6k

1

496,335

by: bb

23 Aug 2026, 13:01

ER

During a sale, a clothing store sold each shirt at a price of $15 and

555-605 (Medium) | Word Problems

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agdimple333

01 May 2011, 13:48

134

10

39,703

by: Virussss

23 Jul 2026, 13:31

ER

Brian works as a consultant. His only work comes from three companies

705-805 (Hard) | Word Problems

705-805 (Hard) | Word Problems hide tags

abhiramkrishna

01 May 2026, 10:50

13

6

955

by: FrozenDragon

23 Jul 2026, 11:38

At a two-day seminar, 90 percent of those registered attended the semi

555-605 (Medium) | Overlapping Sets

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TeHCM

17 Dec 2005, 23:41

216

9

56,701

by: bumpbot

23 Jul 2026, 11:38

ER

The table above shows the morning schedule for train X . If Juan took

655-705 (Hard) | Word Problems

655-705 (Hard) | Word Problems hide tags

sondenso

01 Nov 2018, 03:41

78

10

22,963

by: bumpbot

23 Jul 2026, 10:55

ER

Exactly 3 investorsA, B, and Cinvested in a certain business, each

505-555 (Easy) | Word Problems

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guddo

14 Aug 2024, 07:42

12

5

4,070

by: bumpbot

23 Jul 2026, 10:52

A supermarket purchased 60 identically priced tubes of toothpaste

555-605 (Medium) | Word Problems

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Bunuel

22 Jul 2026, 19:00

1

278

by: sonit1987

23 Jul 2026, 10:26

ER

In the first hour of a bake sale, students sold either cho

705-805 (Hard) | Word Problems

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emmak

08 Jun 2013, 19:04

94

14

16,150

by: GulfTube

23 Jul 2026, 07:10

Of the members of a marching band, what percentage are boys who play

505-555 (Easy) | Percent and Interest Problems

505-555 (Easy) | Percent and Interest Problems hide tags

Bunuel

22 Jul 2026, 19:00

1

304

by: SparkRest

23 Jul 2026, 06:22

Last year, a hotel franchise decided not to pay a few employees'

705-805 (Hard) | Percent and Interest Problems

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Cneltonmp

05 Jul 2026, 10:01

9

3

620

by: tanishapriya96

23 Jul 2026, 00:44

ER

If the probability that there is exactly 1 defective pen in a box is 1

655-705 (Hard) | Probability

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Bunuel

13 Nov 2019, 01:52

22

2

5,741

by: BongBideshini

22 Jul 2026, 21:37

ER

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

805+ (Hard) | Combinations

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1, 2

JusTLucK04

23 Apr 2014, 10:00

245

23

37,105

by: GulfTube

22 Jul 2026, 09:53

A coat sells for one price in children's sizes and another price in

Sub 505 (Easy) | Word Problems

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Bunuel

21 Jul 2026, 19:00

1

313

by: ShortDirt

22 Jul 2026, 04:37

ER

Yvonne purchased an item and the total cost, including tax, was less.

805+ (Hard) | Word Problems

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MrWhite

08 Nov 2023, 00:21

195

12

20,478

by: Usernamevisible

22 Jul 2026, 01:50

ER

Julian had five indoor potted plants, each of which - in order to

655-705 (Hard) | Non-Math Related

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HarshitaV

24 Nov 2025, 09:46

33

7

2,792

by: egmat

22 Jul 2026, 01:17

ER

Is the standard deviation of the set of measurements x1, x2,

505-555 (Easy) | Statistics and Sets Problems

505-555 (Easy) | Statistics and Sets Problems hide tags

Bunuel

25 Jun 2012, 03:01

187

15

52,049

by: bumpbot

21 Jul 2026, 21:48

ER

Both Betty and Wilma earn annual salaries of more than $50,000.

505-555 (Easy) | Word Problems

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enigma123

20 Nov 2023, 08:17

67

11

19,258

by: bumpbot

21 Jul 2026, 19:48

ER

Bowls X and Y each contained exactly 2 jelly beans, each of which was

605-655 (Medium) | Combinations

605-655 (Medium) | Combinations hide tags

boomtangboy

08 Apr 2012, 09:44

200

14

41,173

by: bumpbot

21 Jul 2026, 17:31

ER

Pam and Ed are in a line to purchase tickets. How many

605-655 (Medium) | Word Problems

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rxs0005

06 Aug 2010, 04:32

62

2

13,056

by: bumpbot

21 Jul 2026, 17:31

ER

While on a straight road, Car X and Car Y are traveling at

555-605 (Medium) | Distance and Speed Problems

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1, 2

vix

07 Dec 2012, 10:38

255

22

52,451

by: SameeranKarpe

21 Jul 2026, 11:54

ER

For the team of salespeople in organization X, the amount of incentive

555-605 (Medium) | Word Problems

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Bunuel

07 Jan 2025, 01:30

2

1,023

by: bumpbot

21 Jul 2026, 11:14

ER

Aadesh and Belmira work in sales for a large company and receive [m]10

555-605 (Medium) | Word Problems

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Bunuel

03 Jun 2026, 02:30

2

5

672

by: SKP220292

21 Jul 2026, 11:01

When the members of group A are divided into subgroups of 13 people

655-705 (Hard) | Word Problems

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Bunuel

20 Jul 2026, 19:00

6

3

482

by: Edskore

21 Jul 2026, 10:07

In a pet store survey about dog and cat owners, it was found that 18%

605-655 (Medium) | Overlapping Sets

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Bunuel

20 Jul 2026, 19:00

2

4

408

by: Edskore

21 Jul 2026, 10:06

ER

Should the choices made by 100 participants in a survey about Product

705-805 (Hard) | Non-Math Related

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

GMATinsight

14 Aug 2024, 09:21

161

15

10,122

by: egmat

21 Jul 2026, 10:01

ER

Pete made a trip to the beach, of which 80 kilometers were on highway

Sub 505 (Easy) | Distance and Speed Problems

Sub 505 (Easy) | Distance and Speed Problems hide tags

SergejK

18 Oct 2024, 08:38

12

4

4,275

by: bumpbot

21 Jul 2026, 03:02

ER

Given that x is a positive integer, what is the greatest common diviso

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

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

Bunuel

07 Jul 2015, 02:28

61

11

9,609

by: GulfTube

21 Jul 2026, 02:53

ER

What is the value of x in the list {36, 47, 51, 65, x}?

605-655 (Medium) | Statistics and Sets Problems

605-655 (Medium) | Statistics and Sets Problems hide tags

Bunuel

20 Jun 2023, 06:00

8

4

2,075

by: bumpbot

21 Jul 2026, 00:51

ER

Is 1 + x + x^2 + x^3 + x^4 + x^5 < 1/(1 - x) ? (1) x > 0 (2) x < 1

705-805 (Hard) | Inequalities

705-805 (Hard) | Inequalities hide tags

Bunuel

04 May 2021, 05:59

21

6

5,764

by: Stormik1

20 Jul 2026, 22:53

ER

Cars Y and Z travel side-by-side at the same rate of speed along paral

655-705 (Hard) | Distance and Speed Problems

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

Bunuel

06 Mar 2023, 00:15

138

14

19,234

by: Bunuel

20 Jul 2026, 22:04

A store purchased coats from a manufacturer at $40 each and then sold

555-605 (Medium) | Word Problems

555-605 (Medium) | Word Problems hide tags

guddo

24 Jan 2024, 02:41

28

4

7,167

by: egmat

20 Jul 2026, 20:00

ER

If 38 percent of the departments in a certain research organization

705-805 (Hard) | Statistics and Sets Problems

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

guddo

24 Jan 2024, 02:18

153

17

16,390

by: sidvinod69

20 Jul 2026, 09:00

ER

Both a and b are positive; what is the value of a? (1) 150

705-805 (Hard) | Percent and Interest Problems

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mrinal2100

16 Oct 2010, 13:31

21

13

8,847

by: bumpbot

20 Jul 2026, 08:44

ER -1

When a player in a certain game tossed a coin a number of

505-555 (Easy) | Word Problems

505-555 (Easy) | Word Problems hide tags

Walkabout

14 Dec 2012, 08:28

35

5

17,717

by: KirbyR

20 Jul 2026, 06:15

John is trying to get from point A to point C, which is 20 miles away

605-655 (Medium) | Distance and Speed Problems, Geometry

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

Bunuel

09 Aug 2026, 09:36

14

9

4,907

by: bumpbot

19 Jul 2026, 11:40

A two digit number is randomly selected and multiplied by itself x

605-655 (Medium) | Multiples and Factors, Probability

605-655 (Medium) | Multiples and Factors, Probability hide tags

benejo

06 Apr 2018, 02:49

31

5

5,769

by: bumpbot

19 Jul 2026, 09:48

ER

p and q are integers. If p is divisible by 10^q and cannot

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

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

banksy

29 Oct 2013, 06:22

304

15

30,016

by: Bunuel

19 Jul 2026, 07:56

ER

For a sale, the original retail price of a particular shirt and the

605-655 (Medium) | Percent and Interest Problems, Word Problems

605-655 (Medium) | Percent and Interest Problems, Word Problems hide tags

Bunuel

25 Mar 2015, 04:07

25

11

13,103

by: bumpbot

19 Jul 2026, 06:14

ER

GMAT Club World Cup 2026 (Day 5): A software company asked a group of

805+ (Hard) | Overlapping Sets, Word Problems

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

1, 2, 3, 4

Bunuel

07 Aug 2026, 10:17

72

76

1,543

by: odionam

19 Jul 2026, 04:43

ER

What percent of the students at Jefferson High School study

505-555 (Easy) | Overlapping Sets

505-555 (Easy) | Overlapping Sets hide tags

thinktank

23 Mar 2013, 12:32

24

7

20,050

by: bumpbot

19 Jul 2026, 04:23

ER

Is z equal to the median of the three positive integers, x, y, and z?

505-555 (Easy) | Statistics and Sets Problems

505-555 (Easy) | Statistics and Sets Problems hide tags

1, 2

LM

28 Nov 2017, 01:19

132

20

47,892

by: bumpbot

19 Jul 2026, 00:25

ER

The average (arithmetic mean) of 3 positive integers, x, y, and z, is

505-555 (Easy) | Statistics and Sets Problems

505-555 (Easy) | Statistics and Sets Problems hide tags

Bunuel

23 May 2020, 08:38

2

5

5,165

by: nammolestias

18 Jul 2026, 18:30

ER

If the average (arithmetic mean) of 3 integers x, y, z is 10, what is

505-555 (Easy) | Statistics and Sets Problems

505-555 (Easy) | Statistics and Sets Problems hide tags

Bunuel

27 Jun 2023, 08:00

3

1,809

by: nammolestias

18 Jul 2026, 18:19

ER

During a 5 year period, the profits of Company Z changed by what

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

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

stowaway

10 Jan 2021, 23:29

2

4

1,671

by: bumpbot

18 Jul 2026, 13:01

In the first 2 hours after Meadow's self-service laundry opens, m larg

655-705 (Hard) | Word Problems

655-705 (Hard) | Word Problems hide tags

gmatt1476

21 Sep 2019, 15:57

143

9

19,944

by: bumpbot

18 Jul 2026, 12:23

On account of Diwali, Maha Electronics(ME) is offering a bumper sale o

805+ (Hard) | Percent and Interest Problems, Word Problems

805+ (Hard) | Percent and Interest Problems, Word Problems hide tags

EncounterGMAT

24 Sep 2019, 01:12

16

4

2,734

by: bumpbot

18 Jul 2026, 10:55

ER

In a certain group, the average (arithmetic mean) age of the males is

605-655 (Medium) | Statistics and Sets Problems, Word Problems

605-655 (Medium) | Statistics and Sets Problems, Word Problems hide tags

Bunuel

25 Jul 2018, 04:15

28

8

12,978

by: bumpbot

18 Jul 2026, 10:20

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

29

15

4,840

by: LibrarianTurtle

18 Jul 2026, 08:43

ER

GMAT Club World Cup 2026 (Day 10): At a school festival, 17 students

655-705 (Hard) | Combinations

655-705 (Hard) | Combinations hide tags

1, 2, 3, 4

Bunuel

17 Jul 2026, 08:00

60

63

1,212

by: niteshmotwani

18 Jul 2026, 08:01

ER

GMAT Club World Cup 2026 (Day 2): At a community art festival, 54

555-605 (Medium) | Overlapping Sets

555-605 (Medium) | Overlapping Sets hide tags

1, 2...6, 7

Bunuel

07 Jul 2026, 08:00

117

132

2,131

by: TheAdmissionHub

18 Jul 2026, 01:19

ER

12 Days of Christmas GMAT Competition - Day 8: The parking fee at

805+ (Hard) | Word Problems

805+ (Hard) | Word Problems hide tags

Bunuel

25 Dec 2024, 09:00

40

13

4,069

by: bumpbot

18 Jul 2026, 00:58