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

178

15

79,032

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

188,701

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

488,232

by: bb

29 Aug 2025, 13:27

ER

A gym that sold only individual and family memberships charged $500

605-655 (Medium) | Word Problems

605-655 (Medium) | Word Problems hide tags

Bunuel

26 Jun 2022, 20:30

2

1,591

by: bumpbot

29 Apr 2026, 04:15

ER

A certain income tax is graduated according to the table above. For

655-705 (Hard) | Word Problems

655-705 (Hard) | Word Problems hide tags

Bunuel

27 Feb 2024, 12:16

59

7

11,072

by: bumpbot

29 Apr 2026, 02:52

ER

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

605-655 (Medium) | Work and Rate Problems

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

Bunuel

21 Apr 2026, 19:00

4

5

281

by: Bunuel

29 Apr 2026, 02:30

ER

If k is an integer and x(x k) = k + 1, what is the value of x?

805+ (Hard) | Algebra

805+ (Hard) | Algebra hide tags

Bunuel

01 Sep 2015, 22:51

187

14

30,827

by: impatientdude

29 Apr 2026, 01:25

ER

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

655-705 (Hard) | Statistics and Sets Problems

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

Bunuel

21 Apr 2026, 19:00

2

5

266

by: Bunuel

29 Apr 2026, 01:15

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What is the value of 2^x + 2^(-x) ? (1) x < 0 (2) 4^x + 4^(−x) = 23

555-605 (Medium) | Exponents

555-605 (Medium) | Exponents hide tags

1, 2

Bunuel

10 Aug 2018, 01:23

360

24

37,888

by: ShreyaMittal1609

28 Apr 2026, 12:41

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At a certain animal shelter, there are nine dogs available for

805+ (Hard) | Probability

805+ (Hard) | Probability hide tags

Bunuel

06 Feb 2023, 07:43

54

18

8,724

by: Peterparker2

28 Apr 2026, 06:03

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Of a group of 50 households, how many have at least one cat or at

555-605 (Medium) | Overlapping Sets

555-605 (Medium) | Overlapping Sets hide tags

1, 2, 3

Bunuel

26 Jun 2017, 02:27

332

40

52,445

by: Borrat

28 Apr 2026, 06:02

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What is the sum of the terms in a certain sequence of consecutive inte

605-655 (Medium) | Sequences

605-655 (Medium) | Sequences hide tags

Bunuel

26 May 2021, 02:01

5

3

2,729

by: GrandGG

28 Apr 2026, 05:53

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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

4

225

by: Bunuel

28 Apr 2026, 02:00

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A festival organizer is putting together the final set of food trucks

555-605 (Medium) | Combinations

555-605 (Medium) | Combinations hide tags

Bunuel

20 Apr 2026, 19:00

4

205

by: Bunuel

28 Apr 2026, 01:45

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A shipping company has two departments, one for standard shipping and

655-705 (Hard) | Statistics and Sets Problems

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

Bunuel

20 Nov 2023, 02:30

5

2

2,368

by: bumpbot

27 Apr 2026, 09:20

ER

An artist's portfolio consisting of 1,000 photos is divided into 20 su

605-655 (Medium) | Word Problems

605-655 (Medium) | Word Problems hide tags

Bunuel

13 Feb 2015, 08:46

13

5

5,574

by: bumpbot

27 Apr 2026, 06:58

ER

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

605-655 (Medium) | Sequences

605-655 (Medium) | Sequences hide tags

Bunuel

22 Sep 2023, 01:30

11

3

2,385

by: Tinytrotter

27 Apr 2026, 06:01

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If the terms of a sequence with even integers are a1, a2, a3, . . . ,

655-705 (Hard) | Sequences

655-705 (Hard) | Sequences hide tags

Bunuel

26 May 2016, 11:09

9

6

4,330

by: bumpbot

27 Apr 2026, 04:40

ER

20 percent of the households in Ruterberg have pets. If 15 percent of

555-605 (Medium) | Overlapping Sets

555-605 (Medium) | Overlapping Sets hide tags

Bunuel

13 Dec 2024, 01:30

4

3

1,910

by: bumpbot

26 Apr 2026, 23:48

ER

Georges Gas Station gets fuel from two different fuel suppliers

655-705 (Hard) | Overlapping Sets

655-705 (Hard) | Overlapping Sets hide tags

Bunuel

19 Jan 2026, 03:45

4

2

463

by: Edskore

26 Apr 2026, 05:25

ER

At a community arts festival, each of the 72 volunteers was assigned

655-705 (Hard) | Probability

655-705 (Hard) | Probability hide tags

Bunuel

19 Apr 2026, 19:00

5

3

251

by: Bunuel

26 Apr 2026, 02:30

ER

At a shipping center, every package in a certain batch is either

605-655 (Medium) | Probability

605-655 (Medium) | Probability hide tags

Bunuel

19 Apr 2026, 19:00

5

3

226

by: Bunuel

26 Apr 2026, 01:00

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In the sequence T, the first term is the non-zero number a, and each

805+ (Hard) | Sequences

805+ (Hard) | Sequences hide tags

Bunuel

06 Dec 2023, 02:30

5

3

1,954

by: Bunuel

25 Apr 2026, 23:49

ER

Two cyclists are racing up a mountain at different constant rates. Cyc

655-705 (Hard) | Distance and Speed Problems

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

Bunuel

24 Aug 2016, 07:22

20

7

5,019

by: bumpbot

25 Apr 2026, 09:31

ER

A company sells item X and Y at different discount before the Christma

605-655 (Medium) | Word Problems

605-655 (Medium) | Word Problems hide tags

Bunuel

23 Jul 2022, 13:30

3

2

1,185

by: bumpbot

25 Apr 2026, 05:35

ER

Fifty percent of all the students attending a school on a certain day

605-655 (Medium) | Word Problems

605-655 (Medium) | Word Problems hide tags

Bunuel

11 Nov 2019, 04:23

20

4

6,949

by: bumpbot

25 Apr 2026, 05:28

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

8

9

2,860

by: Tanpok

25 Apr 2026, 04:04

ER

Elena, Marco, and Sofia each had one folder to copy to an external

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

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

Bunuel

12 Apr 2026, 19:00

5

11

456

by: BPranav7

24 Apr 2026, 09:34

ER

A collector plans to take 4 of his cars to an auto show. How many cars

655-705 (Hard) | Combinations

655-705 (Hard) | Combinations hide tags

Bunuel

24 May 2024, 01:30

13

5

2,656

by: bumpbot

24 Apr 2026, 01:32

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

131

12

18,276

by: bumpbot

24 Apr 2026, 00:07

ER

In the coordinate plane, a triangle has points (4,6), (8,6), and (x,y)

605-655 (Medium) | Coordinate Plane, Geometry

605-655 (Medium) | Coordinate Plane, Geometry hide tags

Bunuel

23 May 2018, 22:53

15

4

4,312

by: dhairya18

23 Apr 2026, 23:51

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From 1994 to 1995, the revenue of a company increased x percent. From

705-805 (Hard) | Percent and Interest Problems

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

Bunuel

03 Jan 2021, 11:19

14

8

5,709

by: bumpbot

23 Apr 2026, 23:03

ER

Yesterday it rained in Baronia. Did it rain in Dukia?

655-705 (Hard) | Non-Math Related

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

Bunuel

21 May 2016, 03:47

67

7

15,560

by: Bunuel

23 Apr 2026, 11:01

ER

In a certain Italian recipe book, every recipe that includes oregano

805+ (Hard) | Overlapping Sets

805+ (Hard) | Overlapping Sets hide tags

Bunuel

27 Jun 2024, 01:30

17

4

1,309

by: bumpbot

23 Apr 2026, 10:08

ER

A small factory that produces only upholstered chairs and sofas uses 1

505-555 (Easy) | Word Problems

505-555 (Easy) | Word Problems hide tags

Bunuel

26 Jun 2018, 05:50

22

6

12,633

by: bumpbot

23 Apr 2026, 09:50

ER

A car traveled a distance of d miles in t minutes at an average rate

505-555 (Easy) | Distance and Speed Problems

505-555 (Easy) | Distance and Speed Problems hide tags

Bunuel

23 May 2020, 09:14

30

7

12,339

by: bumpbot

23 Apr 2026, 09:09

ER

There are three different ways to score in basketball. A successful

805+ (Hard) | Word Problems

805+ (Hard) | Word Problems hide tags

Bunuel

27 Jun 2024, 01:30

42

10

7,628

by: bumpbot

23 Apr 2026, 08:45

ER

A reseller bought a vintage floor lamp at a weekend flea market and

705-805 (Hard) | Percent and Interest Problems

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

Bunuel

16 Apr 2026, 19:00

11

3

324

by: Bunuel

23 Apr 2026, 02:45

ER

At a farmers market, Mia, Leo, and Owen each bought some oranges.

655-705 (Hard) | Statistics and Sets Problems

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

Bunuel

16 Apr 2026, 19:00

2

3

279

by: Bunuel

23 Apr 2026, 01:45

ER

A set consists of n distinct integers arranged in the order of increas

705-805 (Hard) | Statistics and Sets Problems

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

Bunuel

29 May 2020, 02:06

17

11

3,701

by: bumpbot

23 Apr 2026, 01:31

ER

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

283

15

42,432

by: bumpbot

22 Apr 2026, 13:00

ER

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

655-705 (Hard) | Work and Rate Problems

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

Bunuel

06 Aug 2024, 01:30

19

7

3,321

by: Adit_

22 Apr 2026, 06:00

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

2,499

by: bumpbot

22 Apr 2026, 04:54

ER

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

11

3

5,745

by: bumpbot

22 Apr 2026, 04:46

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

5,569

by: bumpbot

22 Apr 2026, 04:04

ER

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

605-655 (Medium) | Probability

605-655 (Medium) | Probability hide tags

Bunuel

07 Apr 2016, 08:36

12

3

4,410

by: bumpbot

22 Apr 2026, 03:54

ER

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

3

241

by: Bunuel

22 Apr 2026, 02:45

ER

An inspection agency follows these guidelines for newly laid pipelines

705-805 (Hard) | Word Problems

705-805 (Hard) | Word Problems hide tags

Bunuel

01 Apr 2026, 19:00

8

3

476

by: PlacidSoyabean

22 Apr 2026, 02:30

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

299

by: Bunuel

22 Apr 2026, 01:15

ER

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

9,075

by: bumpbot

21 Apr 2026, 18:29

ER

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

27

5

5,158

by: bumpbot

21 Apr 2026, 18:28

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

37

8

8,812

by: bumpbot

21 Apr 2026, 08:50

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

1,733

by: bumpbot

21 Apr 2026, 08:26