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

175

15

78,535

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

188,419

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

487,762

by: bb

29 Aug 2025, 13:27

ER

Cedar Court and Maple Court have the same number of occupied apartment

655-705 (Hard) | Statistics and Sets Problems

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

Bunuel

12 Apr 2026, 19:00

5

6

239

by: DropletMaverick

21 Apr 2026, 01:12

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A set of data consists of 4 integers. What is the standard

705-805 (Hard) | Statistics and Sets Problems

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

nusmavrik

24 Aug 2010, 01:28

29

7

8,742

by: bumpbot

21 Apr 2026, 01:19

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For a trade-show booth, a crew assembled 10 display panels. Some were

705-805 (Hard) | Word Problems

705-805 (Hard) | Word Problems hide tags

Bunuel

13 Apr 2026, 19:00

5

4

219

by: Bunuel

21 Apr 2026, 01:45

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During a two-session fundraising campaign, Maya and Noah each

705-805 (Hard) | Percent and Interest Problems, Word Problems

705-805 (Hard) | Percent and Interest Problems, Word Problems hide tags

Bunuel

13 Apr 2026, 19:00

8

291

by: Bunuel

21 Apr 2026, 02:30

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Last month a phone company charged $ 0.07 per minute for the first 300

555-605 (Medium) | Word Problems

555-605 (Medium) | Word Problems hide tags

Skywalker18

20 Jun 2016, 11:04

187

18

40,545

by: bumpbot

21 Apr 2026, 03:10

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During two 7-day promotional weeks, Week 1 and Week 2, a bike-share

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

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

Bunuel

14 Apr 2026, 19:00

4

176

by: Bunuel

21 Apr 2026, 03:30

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Before the start of the fall service cycle, the city transit authority

555-605 (Medium) | Word Problems

555-605 (Medium) | Word Problems hide tags

Bunuel

14 Apr 2026, 19:00

4

177

by: Bunuel

21 Apr 2026, 04:00

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Was the average (arithmetic mean) score that Steve got per subject gre

605-655 (Medium) | Word Problems

605-655 (Medium) | Word Problems hide tags

Bunuel

01 Nov 2018, 00:12

4

2

1,930

by: bumpbot

21 Apr 2026, 05:06

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In a class, there are 170 students, each of whom plays at least one of

555-605 (Medium) | Overlapping Sets

555-605 (Medium) | Overlapping Sets hide tags

Bunuel

20 Apr 2026, 19:00

2

3

117

by: Edskore

21 Apr 2026, 05:27

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Last year the first $ 30,000 of each Country X resident's

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

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

eybrj2

24 Feb 2012, 23:27

7

2

4,784

by: bumpbot

21 Apr 2026, 07:31

ER

A certain company operates a website, Z,

555-605 (Medium) | Word Problems

555-605 (Medium) | Word Problems hide tags

Brownbatman

20 Nov 2025, 13:40

12

3

1,737

by: keshubhturakhia

21 Apr 2026, 08:08

ER

What is the average (arithmetic mean) of a certain sequence of N

655-705 (Hard) | Sequences

655-705 (Hard) | Sequences hide tags

Bunuel

22 Sep 2023, 01:30

6

3

1,667

by: bumpbot

21 Apr 2026, 08:26

ER

The average (arithmetic mean) of a list of positive numbers is what

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

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

Bunuel

07 Nov 2017, 23:25

35

8

8,711

by: bumpbot

21 Apr 2026, 08:50

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Julie is selling lemonades in two sizes, small and large. Small lemona

655-705 (Hard) | Word Problems

655-705 (Hard) | Word Problems hide tags

Bunuel

23 Sep 2015, 22:51

24

5

5,092

by: bumpbot

21 Apr 2026, 18:28

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At a certain company, 40% of the women are over 50 years old and 50% o

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

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

Bunuel

23 Sep 2015, 03:22

27

10

8,984

by: bumpbot

21 Apr 2026, 18:29

ER

At the start of a data-conversion job, two servers, Alpha and Beta

555-605 (Medium) | Work and Rate Problems

555-605 (Medium) | Work and Rate Problems hide tags

Bunuel

15 Apr 2026, 19:00

3

4

211

by: Bunuel

22 Apr 2026, 01:15

ER

Train A leaves New York for Boston at 3 PM and travels at

805+ (Hard) | Distance and Speed Problems

805+ (Hard) | Distance and Speed Problems hide tags

1, 2, 3

rohitgoel15

22 Jul 2010, 00:49

1.4k

43

140,833

by: bumpbot

22 Apr 2026, 01:50

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An inspection agency follows these guidelines for newly laid pipelines

805+ (Hard) | Word Problems

805+ (Hard) | Word Problems hide tags

Bunuel

01 Apr 2026, 19:00

7

3

418

by: PlacidSoyabean

22 Apr 2026, 02:30

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At a warehouse, the daily output of Machine Orion is two-thirds of the

555-605 (Medium) | Work and Rate Problems

555-605 (Medium) | Work and Rate Problems hide tags

Bunuel

15 Apr 2026, 19:00

2

3

155

by: Bunuel

22 Apr 2026, 02:45

ER

There are a number of red beads and white beads in a jar. If Mike were

655-705 (Hard) | Probability

655-705 (Hard) | Probability hide tags

Bunuel

07 Apr 2016, 08:36

12

3

4,322

by: bumpbot

22 Apr 2026, 03:54

ER

The number of touchscreen personal organizers currently in stock is p

655-705 (Hard) | Word Problems

655-705 (Hard) | Word Problems hide tags

Bunuel

22 Apr 2026, 04:08

6

7

5,495

by: bumpbot

22 Apr 2026, 04:04

ER

10 children have ordered a total of 17 hamburgers, and each child has

705-805 (Hard) | Word Problems

705-805 (Hard) | Word Problems hide tags

Bunuel

14 Jan 2021, 01:15

7

9

2,741

by: bumpbot

22 Apr 2026, 04:14

ER

A courier company assigned each of its drivers to exactly one of three

555-605 (Medium) | Statistics and Sets Problems

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

Bunuel

21 Apr 2026, 19:00

2

4

95

by: BongBideshini

22 Apr 2026, 04:22

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A man spends 20% of his income on house rent, 25% of the remaining inc

705-805 (Hard) | Percent and Interest Problems

705-805 (Hard) | Percent and Interest Problems hide tags

Bunuel

28 Jan 2021, 01:15

9

3

5,670

by: bumpbot

22 Apr 2026, 04:46

ER

Let [x] represent the average of the greatest integer less than or equ

705-805 (Hard) | Functions and Custom Characters

705-805 (Hard) | Functions and Custom Characters hide tags

Bunuel

29 Jan 2021, 01:15

6

3

2,439

by: bumpbot

22 Apr 2026, 04:54

ER

A typist typed complete pages of several books in a day. If he typed

605-655 (Medium) | Work and Rate Problems

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

Bunuel

06 Aug 2024, 01:30

18

7

3,195

by: Adit_

22 Apr 2026, 06:00

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Michael arranged all his books in a bookcase with 10 books on each she

605-655 (Medium) | Word Problems

605-655 (Medium) | Word Problems hide tags

Bunuel

10 Feb 2014, 00:27

278

15

42,134

by: bumpbot

22 Apr 2026, 13:00

ER

On a fishing expedition, a group of 13 fishermen caught a total of 160

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

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

shasadou

02 Apr 2016, 03:59

78

15

17,112

by: mkj128

22 Apr 2026, 14:47

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Maya and Leo are digitizing a set of archival files. Working together

555-605 (Medium) | Work and Rate Problems

555-605 (Medium) | Work and Rate Problems hide tags

Bunuel

21 Apr 2026, 19:00

3

4

119

by: nemoexplicabo

22 Apr 2026, 15:31

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A community theater sold tickets for the same show in January and in

555-605 (Medium) | Percent and Interest Problems

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

Bunuel

22 Apr 2026, 19:00

1

27

by: Adit_

22 Apr 2026, 22:47

ER

During a wedding season, two event venues, Cedar Hall and Willow Hall

555-605 (Medium) | Statistics and Sets Problems

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

Bunuel

22 Apr 2026, 19:00

1

23

by: Adit_

22 Apr 2026, 22:53