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

79,772

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

858

24

188,985

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

488,687

by: bb

29 Aug 2025, 13:27

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

141,123

by: bumpbot

22 Apr 2026, 01:50

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

330

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

9,125

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

5,181

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

38

8

8,843

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

1,776

by: bumpbot

21 Apr 2026, 08:26

ER

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

4,839

by: bumpbot

21 Apr 2026, 07:31

ER

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

655-705 (Hard) | Word Problems

655-705 (Hard) | Word Problems hide tags

Bunuel

01 Nov 2018, 00:12

5

2

2,028

by: bumpbot

21 Apr 2026, 05:06

ER

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

605-655 (Medium) | Word Problems

605-655 (Medium) | Word Problems hide tags

Bunuel

14 Apr 2026, 19:00

5

4

286

by: Bunuel

21 Apr 2026, 04:00

ER

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

253

by: Bunuel

21 Apr 2026, 03:30

ER

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

189

18

40,710

by: bumpbot

21 Apr 2026, 03:10

ER

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

7

4

329

by: Bunuel

21 Apr 2026, 01:45

ER

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

8,819

by: bumpbot

21 Apr 2026, 01:19

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

353

by: DropletMaverick

21 Apr 2026, 01:12

ER

How many different 5-person teams can be formed from a group

Sub 505 (Easy) | Combinations

Sub 505 (Easy) | Combinations hide tags

gmatJP

22 Jun 2010, 19:14

207

13

49,719

by: bumpbot

20 Apr 2026, 22:40

ER

Bill is 88 years old. How old is Colie?

Sub 505 (Easy) | Word Problems

Sub 505 (Easy) | Word Problems hide tags

Bunuel

28 Oct 2024, 01:30

2

1,152

by: bumpbot

20 Apr 2026, 21:59

ER

If S is a set of odd integers and 3 and –1 are in S, is –15 in S ?

505-555 (Easy) | Sequences

505-555 (Easy) | Sequences hide tags

Bunuel

26 Apr 2019, 01:57

119

18

24,279

by: bumpbot

20 Apr 2026, 10:50

ER

If Johnny bought candy using nickels ($0.05 coins)

555-605 (Medium) | Word Problems

555-605 (Medium) | Word Problems hide tags

Bunuel

01 Oct 2023, 04:47

10

2

10,588

by: thisisakr

20 Apr 2026, 09:50

ER

12 Days of Christmas GMAT Competition - Day 10: Three ethanol-water

655-705 (Hard) | Mixture Problems

655-705 (Hard) | Mixture Problems hide tags

Bunuel

27 Dec 2024, 09:00

27

14

4,354

by: bumpbot

20 Apr 2026, 05:30

ER

12 Days of Christmas GMAT Competition - Day 3: A manufacturer creates

655-705 (Hard) | Mixture Problems, Word Problems

655-705 (Hard) | Mixture Problems, Word Problems hide tags

Bunuel

18 Dec 2024, 09:00

18

9

5,088

by: bumpbot

20 Apr 2026, 05:28

ER

A certain chef is combining two mixtures to create a soup.

655-705 (Hard) | Mixture Problems

655-705 (Hard) | Mixture Problems hide tags

Bunuel

14 Oct 2024, 01:30

17

3

2,169

by: bumpbot

20 Apr 2026, 05:19

ER

If 50 mL of an x% alcohol solution is mixed with 30 mL of a y% alcohol

655-705 (Hard) | Algebra, Mixture Problems

655-705 (Hard) | Algebra, Mixture Problems hide tags

Bunuel

26 Nov 2019, 02:03

13

4

4,414

by: bumpbot

20 Apr 2026, 05:15

ER

Packet A contains a mixture of salt and sugar and Packet B contains

655-705 (Hard) | Mixture Problems

655-705 (Hard) | Mixture Problems hide tags

Bunuel

26 Nov 2022, 09:15

7

2

3,380

by: bumpbot

20 Apr 2026, 05:11

ER

If there are only girl students in a class, is the number of students

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

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

chetan2u

16 Oct 2017, 04:17

13

6

2,992

by: bumpbot

20 Apr 2026, 03:01

ER

By what percent has the price of an overcoat been reduced?

Sub 505 (Easy) | Word Problems

Sub 505 (Easy) | Word Problems hide tags

Bunuel

09 Dec 2014, 07:09

19

6

18,833

by: thisisakr

20 Apr 2026, 02:55

ER

Felixity, a musician, never sings sad rock songs. Of the songs on Feli

705-805 (Hard) | Overlapping Sets

705-805 (Hard) | Overlapping Sets hide tags

Bunuel

16 Jun 2021, 05:00

6

2,455

by: Bunuel

19 Apr 2026, 22:09

ER

Was the amount of John's heating bill for February greater than it was

Sub 505 (Easy) | Word Problems

Sub 505 (Easy) | Word Problems hide tags

Bunuel

24 Jun 2018, 20:35

27

8

19,703

by: NamDuong

19 Apr 2026, 21:42

What is the value of a + b + 1?

805+ (Hard) | Algebra, Math Related

805+ (Hard) | Algebra, Math Related hide tags

NathanMasky

24 Feb 2025, 14:57

10

2

1,053

by: bumpbot

19 Apr 2026, 19:38

ER

Does Country X have more citizens than Country Y?

555-605 (Medium) | Overlapping Sets, Word Problems

555-605 (Medium) | Overlapping Sets, Word Problems hide tags

Bunuel

23 Jan 2015, 07:45

37

5

8,956

by: bumpbot

19 Apr 2026, 08:18

ER

Each entry in the multiplication table above is an integer that is eit

705-805 (Hard) | Arithmetic

705-805 (Hard) | Arithmetic hide tags

gmatt1476

21 Sep 2019, 19:09

202

9

20,686

by: Bunuel

19 Apr 2026, 06:47

ER

When a certain drug was administered to a group of patients, some pati

805+ (Hard) | Overlapping Sets

805+ (Hard) | Overlapping Sets hide tags

edwin.que

01 Nov 2023, 22:31

138

8

18,619

by: bumpbot

19 Apr 2026, 04:32

ER

R = {223, 225, 227, 229, 231, 233, 235, 237} Given Set R, Set S is fo

705-805 (Hard) | Statistics and Sets Problems

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

Sajjad1994

14 Aug 2019, 03:28

6

2

1,749

by: bumpbot

19 Apr 2026, 03:42

ER

For a certain exam, was the standard deviation of the scores

605-655 (Medium) | Statistics and Sets Problems

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

gmat1220

09 May 2011, 00:12

85

11

11,708

by: bumpbot

18 Apr 2026, 23:38

ER

Train A leaves New York and is heading towards Boston at a constant

805+ (Hard) | Distance and Speed Problems

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

Bunuel

14 Apr 2025, 00:30

13

4

1,403

by: bumpbot

18 Apr 2026, 20:56

ER

The average duration of Rasmuss commute across Monday, Tuesday, and

555-605 (Medium) | Distance and Speed Problems

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

ExpertsGlobal5

12 Jan 2026, 22:00

1

5

514

by: iamjatinagrawal

18 Apr 2026, 11:59

ER

The sequence of s1, s2, s3, . . . , sn of n is such that sk = 2k -1 if

605-655 (Medium) | Sequences

605-655 (Medium) | Sequences hide tags

RITU700

05 Mar 2016, 13:29

23

6

7,665

by: bumpbot

18 Apr 2026, 11:58

ER

Ann and Pierre purchased $37 worth of French fries.

605-655 (Medium) | Word Problems

605-655 (Medium) | Word Problems hide tags

Gnpth

15 Jul 2014, 23:45

15

6

5,387

by: bumpbot

18 Apr 2026, 11:54

ER

A group of 580 people participated in a survey. Each of these people

605-655 (Medium) | Overlapping Sets

605-655 (Medium) | Overlapping Sets hide tags

Bunuel

01 Jul 2020, 02:55

12

8

5,606

by: bumpbot

18 Apr 2026, 11:27

ER

If S is a sequence of numbers of the form X, XX, XXX, XXXX, XXXXX, …,

605-655 (Medium) | Multiples and Factors +2 tags

605-655 (Medium) | Multiples and Factors, Number Properties, Sequences hide tags

Bunuel

27 Jan 2016, 03:14

26

10

9,482

by: bumpbot

18 Apr 2026, 08:29

A company produces three types of electronic components: X, Y, and Z.

605-655 (Medium) | Math Related, Word Problems

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

Gmat750aspirant

28 Feb 2025, 09:36

15

5

2,625

by: Jash1666

17 Apr 2026, 23:47

ER

Rachel is throwing a die with sides numbered consecutively

705-805 (Hard) | Probability

705-805 (Hard) | Probability hide tags

Macedon

10 Nov 2013, 04:15

85

14

13,158

by: bumpbot

17 Apr 2026, 12:46

ER

A department manager distributed a number of books, calendars, and dia

705-805 (Hard) | Fractions and Ratios, Word Problems

705-805 (Hard) | Fractions and Ratios, Word Problems hide tags

Bunuel

24 Feb 2016, 04:28

41

10

8,122

by: bumpbot

17 Apr 2026, 04:52

ER

For a certain set of z numbers, where z > 1, is the average (arithmeti

555-605 (Medium) | Statistics and Sets Problems

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

Bunuel

08 Jan 2018, 07:39

2

1,559

by: bumpbot

17 Apr 2026, 03:47

ER

A factory has three types of machines – A, B, and C – each of which wo

655-705 (Hard) | Work and Rate Problems

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

Bunuel

21 Jul 2016, 04:42

97

9

14,077

by: NidhiYad

17 Apr 2026, 03:19

ER

Set X consists of exactly four distinct integers that are greater than

805+ (Hard) | Number Properties, Statistics and Sets Problems

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

Sajjad1994

29 Oct 2020, 12:02

16

4

3,261

by: bumpbot

17 Apr 2026, 00:52

ER

In the sequence of positive integers a1,a2,a3,...,an−1,an where n > 5

805+ (Hard) | Sequences

805+ (Hard) | Sequences hide tags

nislam

10 Nov 2021, 10:52

12

3

4,831

by: Adit_

16 Apr 2026, 23:33

ER

At the same time Sue began rolling a wheelbarrow from X to Y, Nancy

605-655 (Medium) | Distance and Speed Problems

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

Bunuel

05 Jun 2015, 06:10

63

10

12,810

by: pappal

16 Apr 2026, 12:49

ER

Set X consists of different positive numbers arranged in ascending ord

555-605 (Medium) | Number Properties, Word Problems

555-605 (Medium) | Number Properties, Word Problems hide tags

enigma123

17 Nov 2011, 16:41

57

9

26,298

by: bumpbot

16 Apr 2026, 11:27

ER

The greatest of M integers is 400. The least of N integers is 475. Wha

555-605 (Medium) | Statistics and Sets Problems

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

Bunuel

13 Apr 2018, 01:19

5

4

1,759

by: bumpbot

16 Apr 2026, 10:56

ER

[y] denotes the greatest integer less than or equal to y. Is d < 1?

555-605 (Medium) | Algebra, Functions and Custom Characters

555-605 (Medium) | Algebra, Functions and Custom Characters hide tags

Bunuel

20 Feb 2014, 01:14

366

14

48,633

by: bumpbot

16 Apr 2026, 09:43