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

183

15

83,787

by: thisisakr

16 Apr 2026, 11:46

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100 Hardest and easiest questions for DS as of May 2026

1, 2

Bunuel

01 Jan 2026, 05:45

863

24

191,796

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

491,786

by: bb

29 Aug 2025, 13:27

ER

The function f is defined for all positive integers n > 4 as

805+ (Hard) | Functions and Custom Characters, Number Properties

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

Rock750

15 Jan 2014, 12:00

172

14

23,339

by: bumpbot

24 May 2026, 01:23

ER

In one list of N consecutive integers, the smallest value is S and

705-805 (Hard) | Statistics and Sets Problems

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

nislam

16 Jan 2022, 10:52

5

3

1,607

by: sujoykrdatta

23 May 2026, 22:56

ER

Town X has 50,000 residents, some of whom were born in Town X. What pe

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

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

gmatt1476

21 Sep 2019, 19:00

139

9

18,718

by: krrishabh96

23 May 2026, 12:28

ER

Yesterday, Nan parked her car at a certain parking garage

555-605 (Medium) | Word Problems

555-605 (Medium) | Word Problems hide tags

ywilfred

28 Aug 2004, 09:15

52

10

18,839

by: bumpbot

23 May 2026, 10:56

ER

How long did Mr. X take to cover 5000 km journey with 10 stopovers?

555-605 (Medium) | Distance and Speed Problems

555-605 (Medium) | Distance and Speed Problems hide tags

excelingmat

10 Oct 2015, 07:43

7

6

7,228

by: Bunuel

23 May 2026, 10:25

If the smallest number in a set of positive integers is 3, how many nu

605-655 (Medium) | Statistics and Sets Problems

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

PriyankaPalit7

21 Mar 2019, 02:37

5

2

2,728

by: bumpbot

23 May 2026, 07:35

ER

When line k, expressed by the equation y = mx + b, is graphed on a coo

605-655 (Medium) | Coordinate Plane

605-655 (Medium) | Coordinate Plane hide tags

Bunuel

07 Feb 2020, 06:14

7

5

4,609

by: Bunuel

22 May 2026, 23:42

ER

The median of Set S and T are 12 and 18, respectively. When S and T

605-655 (Medium) | Statistics and Sets Problems

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

Bunuel

28 Feb 2024, 01:13

3

1,492

by: gullyboy09

22 May 2026, 23:09

Danny and Swati each receive a certain fixed salary and a variable sal

705-805 (Hard) | Word Problems

705-805 (Hard) | Word Problems hide tags

amanvermagmat

25 Apr 2018, 11:31

6

3

2,374

by: bumpbot

22 May 2026, 10:24

ER

The sum of the integers in list S is the same as the sum of the intege

805+ (Hard) | Statistics and Sets Problems

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

1, 2, 3

Apex231

18 Feb 2012, 09:09

659

42

85,670

by: bumpbot

22 May 2026, 07:51

ER

If Machine X can produce 80 widgets in 4 hours, how long would it take

Sub 505 (Easy) | Work and Rate Problems

Sub 505 (Easy) | Work and Rate Problems hide tags

Bunuel

17 Feb 2016, 03:39

7

5

4,903

by: bumpbot

22 May 2026, 07:09

ER

At the beginning of the month, a clothing store had 5 shirts for every

655-705 (Hard) | Word Problems

655-705 (Hard) | Word Problems hide tags

Bunuel

30 Apr 2025, 05:49

5

3

1,790

by: bumpbot

22 May 2026, 03:57

ER

Can regular exercise reduce the risk of chronic diseases?

Sub 505 (Easy) | Non-Math Related

Sub 505 (Easy) | Non-Math Related hide tags

guddo

14 Aug 2024, 09:38

13

9

4,364

by: Usernamevisible

22 May 2026, 02:54

ER

John and Tom leave the school at the same time to each of their houses

655-705 (Hard) | Distance and Speed Problems

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

MathRevolution

13 Feb 2017, 01:00

12

6

5,090

by: bumpbot

22 May 2026, 02:17

ER

Will the interest earned on an investment of $4360 in fund X be

605-655 (Medium) | Percent and Interest Problems

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

Bunuel

24 Jan 2026, 05:45

3

1

523

by: AllisonBell

21 May 2026, 09:12

ER

Set T consists of a certain number of even integers divisible by 3. Is

555-605 (Medium) | Statistics and Sets Problems

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

jeetparicha85

30 Mar 2022, 04:01

16

5

8,414

by: bumpbot

21 May 2026, 07:59

ER

In the fraction x/y, where x and y are positive integers, what is the

655-705 (Hard) | Functions and Custom Characters

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

Bunuel

04 Jan 2021, 04:02

229

13

37,383

by: Bunuel

21 May 2026, 07:01

ER

The figure above shows an array of 30 square tiles, each of which is

655-705 (Hard) | Word Problems

655-705 (Hard) | Word Problems hide tags

Bunuel

17 Apr 2024, 14:32

36

2

8,800

by: bumpbot

21 May 2026, 03:22

ER

An activist club is advocating against the opening of Walmart in

805+ (Hard) | Combinations

805+ (Hard) | Combinations hide tags

Bunuel

06 Nov 2024, 01:31

17

7

1,537

by: bumpbot

20 May 2026, 21:57

ER

Each M-type unit will increase the base memory capacity of a certain

555-605 (Medium) | Word Problems

555-605 (Medium) | Word Problems hide tags

Bunuel

01 Oct 2015, 01:51

50

6

13,433

by: bumpbot

20 May 2026, 17:43

ER

What is the distance from town A to town B?

655-705 (Hard) | Distance and Speed Problems

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

manhattan187

28 Oct 2015, 14:31

31

7

8,997

by: bumpbot

20 May 2026, 05:12

ER

Company X's profits this year increased by 25% over last year's profit

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

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

1, 2

Bunuel

02 Aug 2018, 23:42

186

21

31,041

by: Ishaan30

20 May 2026, 03:00

ER

Out of a stock of 10 microphones, an electronics store sold more than

655-705 (Hard) | Word Problems

655-705 (Hard) | Word Problems hide tags

MT1302

20 Mar 2024, 08:25

13

11

4,559

by: bumpbot

20 May 2026, 01:06

ER

Vanda's butcher shop sells packages of ground turkey and ground beef.

555-605 (Medium) | Word Problems

555-605 (Medium) | Word Problems hide tags

Bunuel

12 Jan 2022, 07:00

5

3

2,801

by: bumpbot

20 May 2026, 00:55

ER

What percent of the visitors to a certain zoo visited the lions cage?

555-605 (Medium) | Word Problems

555-605 (Medium) | Word Problems hide tags

Bunuel

13 Jan 2023, 02:30

3

4

1,374

by: bumpbot

20 May 2026, 00:41

ER

A box contains 10 light bulbs, fewer than half of which are defective.

605-655 (Medium) | Probability

605-655 (Medium) | Probability hide tags

1, 2

marcodonzelli

20 Nov 2023, 08:14

456

27

68,642

by: Usernamevisible

19 May 2026, 23:32

ER

What is the ratio of the number of boys to the number of girls

605-655 (Medium) | Word Problems

605-655 (Medium) | Word Problems hide tags

Bunuel

24 Jun 2024, 01:30

8

4

1,289

by: Edskore

19 May 2026, 11:51

ER

The GMAT is scored on a scale of 200 to 800 in 10 point incr

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

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

1, 2

enigma123

15 Apr 2026, 11:36

404

22

35,742

by: Usernamevisible

19 May 2026, 10:20

ER

Hollywood starlets Ashlee and Britnee each has an entourage

705-805 (Hard) | Combinations

705-805 (Hard) | Combinations hide tags

RohitKalla

22 Jul 2011, 11:40

65

8

10,186

by: bumpbot

19 May 2026, 08:46

ER

Four men and three women make up a seven-member committee

705-805 (Hard) | Combinations

705-805 (Hard) | Combinations hide tags

TheGerman

13 Sep 2017, 08:15

72

8

21,986

by: bumpbot

19 May 2026, 08:42

ER

Each of the 30 students in a class is either male or female, and has

655-705 (Hard) | Probability

655-705 (Hard) | Probability hide tags

Bunuel

09 Jan 2025, 01:30

6

3

1,738

by: bumpbot

19 May 2026, 07:41

ER

There are 5 employees in a team and all of them do not have equal sala

605-655 (Medium) | Statistics and Sets Problems

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

GMATinsight

04 May 2019, 02:44

11

2

2,077

by: bumpbot

19 May 2026, 07:10

ER

In an arithmetic sequence, if a5 = 16 and d = an an1, what is the v

655-705 (Hard) | Sequences

655-705 (Hard) | Sequences hide tags

Bunuel

04 May 2022, 06:00

7

3

2,625

by: bumpbot

19 May 2026, 05:58

16 numbers (not necessarily distinct) are filled in the 4x4 square gri

805+ (Hard) | Combinations, Number Properties

805+ (Hard) | Combinations, Number Properties hide tags

nick1816

06 Apr 2020, 19:49

27

9

7,497

by: bumpbot

19 May 2026, 03:29

ER

What percentage of steel workers in the country earns over $

605-655 (Medium) | Percent and Interest Problems

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

r019h

21 Aug 2007, 20:50

13

9

6,248

by: bumpbot

19 May 2026, 02:58

ER

The cardinality of a finite set is the number of elements in the set.

705-805 (Hard) | Statistics and Sets Problems

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

gmatt1476

21 Sep 2019, 15:15

378

12

34,701

by: Usernamevisible

19 May 2026, 02:01

ER

Is the product of all of the elements in Set S negative?

605-655 (Medium) | Statistics and Sets Problems

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

rdevorse

17 Jan 2012, 17:57

62

13

13,498

by: Usernamevisible

18 May 2026, 23:44

ER

A candy manufacturer decided to decrease the weight of each candy bar,

555-605 (Medium) | Word Problems

555-605 (Medium) | Word Problems hide tags

Bunuel

29 Jan 2016, 03:21

13

11

6,439

by: bumpbot

18 May 2026, 22:51

ER

Does the average of a, b, and c equal c ? (1) c - a = c + b (2) c = 0

605-655 (Medium) | Statistics and Sets Problems

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

Bunuel

08 Nov 2019, 03:56

11

3

4,902

by: bumpbot

18 May 2026, 20:39

ER

Three teams, A, B and C each have five members. The three teams compet

805+ (Hard) | Word Problems

805+ (Hard) | Word Problems hide tags

Bunuel

11 May 2016, 00:16

11

7

8,193

by: gttngthr26

18 May 2026, 14:02

ER

How many people received a certain survey?

Sub 505 (Easy) | Fractions and Ratios, Word Problems

Sub 505 (Easy) | Fractions and Ratios, Word Problems hide tags

Bunuel

16 Oct 2019, 08:13

5

6

6,366

by: Shreya0308

18 May 2026, 11:50

ER

From 1985 to 1994, what was the percent increase in total Un

Sub 505 (Easy) | Percent and Interest Problems

Sub 505 (Easy) | Percent and Interest Problems hide tags

Phoenix72

13 Sep 2013, 04:39

20

9

14,738

by: Shreya0308

18 May 2026, 11:49

ER

Mike recently won a contest in which he will have the opport

805+ (Hard) | Probability

805+ (Hard) | Probability hide tags

1, 2

ctrlaltdel

19 Sep 2013, 05:09

179

32

28,786

by: bumpbot

18 May 2026, 09:27

ER

At least 200 employees at a certain company play football. If 5 percen

705-805 (Hard) | Overlapping Sets

705-805 (Hard) | Overlapping Sets hide tags

Bunuel

19 Dec 2019, 02:47

12

3

3,189

by: bumpbot

18 May 2026, 07:54

ER -2

A team of workers including Tom and Dick work in the same office

605-655 (Medium) | Probability

605-655 (Medium) | Probability hide tags

Bunuel

23 Jan 2026, 09:15

2

4

660

by: Stella5200

18 May 2026, 06:51

ER

What was Jean's insurance premium in 1995 ?

Sub 505 (Easy) | Word Problems

Sub 505 (Easy) | Word Problems hide tags

Bunuel

11 Jun 2019, 03:14

13

4

12,733

by: bumpbot

18 May 2026, 05:21

ER

A candle company determines that, for a certain specialty candle, the

555-605 (Medium) | Coordinate Plane +2 tags

555-605 (Medium) | Coordinate Plane, Functions and Custom Characters, Word Problems hide tags

Bunuel

03 Jul 2016, 10:47

155

18

31,986

by: Usernamevisible

18 May 2026, 02:08

ER

The value of Machine 1 depreciates x% per year and the value of Machin

705-805 (Hard) | Word Problems

705-805 (Hard) | Word Problems hide tags

edwin.que

01 Nov 2023, 22:30

73

7

13,577

by: KarishmaB

18 May 2026, 01:05

ER

Are at least 10% of the employees at ABC Corporation who are

705-805 (Hard) | Statistics and Sets Problems

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

tusharGupta1

06 Dec 2013, 09:16

10

6

6,318

by: bumpbot

18 May 2026, 00:20

ER

What was the ratio of the number of shares of stock X to shares of

605-655 (Medium) | Word Problems

605-655 (Medium) | Word Problems hide tags

Bunuel

20 Jan 2025, 01:30

2

4

1,382

by: bumpbot

17 May 2026, 20:42