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

89,195

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

194,313

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

496,397

by: bb

23 Aug 2026, 13:01

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

705-805 (Hard) | Functions and Custom Characters

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Bunuel

29 Jan 2021, 01:15

8

3

2,685

by: bumpbot

22 Apr 2026, 04:54

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

705-805 (Hard) | Percent and Interest Problems

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Bunuel

28 Jan 2021, 01:15

11

3

5,953

by: bumpbot

22 Apr 2026, 04:46

ER

The number of touchscreen personal organizers currently in stock is p

655-705 (Hard) | Word Problems

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Bunuel

22 Apr 2026, 04:08

6

7

5,709

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

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Bunuel

07 Apr 2016, 08:36

13

3

4,602

by: bumpbot

22 Apr 2026, 03:54

ER

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

505-555 (Easy) | Work and Rate Problems

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Bunuel

15 Apr 2026, 19:00

4

3

412

by: Bunuel

22 Apr 2026, 02:45

ER

An inspection agency follows these guidelines for newly laid pipelines

805+ (Hard) | Word Problems

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Bunuel

01 Apr 2026, 19:00

8

3

756

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

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Bunuel

15 Apr 2026, 19:00

4

485

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

29

10

9,483

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

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Bunuel

23 Sep 2015, 22:51

27

5

5,324

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

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Bunuel

07 Nov 2017, 23:25

41

8

9,097

by: bumpbot

21 Apr 2026, 08:50

ER

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

655-705 (Hard) | Sequences

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Bunuel

22 Sep 2023, 01:30

8

3

2,210

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

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eybrj2

24 Feb 2012, 23:27

7

2

4,966

by: bumpbot

21 Apr 2026, 07:31

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

655-705 (Hard) | Word Problems

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Bunuel

01 Nov 2018, 00:12

5

2

2,146

by: bumpbot

21 Apr 2026, 05:06

ER

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

655-705 (Hard) | Word Problems

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Bunuel

14 Apr 2026, 19:00

5

4

436

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

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Bunuel

14 Apr 2026, 19:00

6

4

389

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

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Skywalker18

20 Jun 2016, 11:04

193

18

41,043

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

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Bunuel

13 Apr 2026, 19:00

7

4

466

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

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nusmavrik

24 Aug 2010, 01:28

30

7

8,946

by: bumpbot

21 Apr 2026, 01:19

ER

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

605-655 (Medium) | Statistics and Sets Problems

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Bunuel

12 Apr 2026, 19:00

5

6

522

by: DropletMaverick

21 Apr 2026, 01:12

ER

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

Sub 505 (Easy) | Combinations

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gmatJP

22 Jun 2010, 19:14

210

13

50,188

by: bumpbot

20 Apr 2026, 22:40

Bill is 88 years old. How old is Colie?

Sub 505 (Easy) | Word Problems

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Bunuel

28 Oct 2024, 01:30

2

1,260

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

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Bunuel

26 Apr 2019, 01:57

121

18

24,618

by: bumpbot

20 Apr 2026, 10:50

ER

If Johnny bought candy using nickels ($0.05 coins)

555-605 (Medium) | Word Problems

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Bunuel

01 Oct 2023, 04:47

10

2

10,795

by: thisisakr

20 Apr 2026, 09:50

ER

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

655-705 (Hard) | Mixture Problems

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Bunuel

27 Dec 2024, 09:00

27

14

4,834

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

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Bunuel

18 Dec 2024, 09:00

20

9

5,456

by: bumpbot

20 Apr 2026, 05:28

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

655-705 (Hard) | Mixture Problems

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Bunuel

14 Oct 2024, 01:30

18

3

2,403

by: bumpbot

20 Apr 2026, 05:19

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

655-705 (Hard) | Algebra, Mixture Problems

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Bunuel

26 Nov 2019, 02:03

13

4

4,582

by: bumpbot

20 Apr 2026, 05:15

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

605-655 (Medium) | Mixture Problems

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Bunuel

26 Nov 2022, 09:15

7

2

3,574

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

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chetan2u

16 Oct 2017, 04:17

14

6

3,115

by: bumpbot

20 Apr 2026, 03:01

ER

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

Sub 505 (Easy) | Word Problems

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Bunuel

24 Jun 2018, 20:35

28

8

20,089

by: NamDuong

19 Apr 2026, 21:42

What is the value of a + b + 1?

805+ (Hard) | Algebra, Math Related

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NathanMasky

24 Feb 2025, 14:57

11

2

1,231

by: bumpbot

19 Apr 2026, 19:38

ER

Does Country X have more citizens than Country Y?

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

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Bunuel

23 Jan 2015, 07:45

37

5

9,238

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

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gmatt1476

21 Sep 2019, 19:09

208

9

21,037

by: Bunuel

19 Apr 2026, 06:47

ER

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

705-805 (Hard) | Statistics and Sets Problems

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Sajjad1994

14 Aug 2019, 03:28

6

2

1,845

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

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gmat1220

09 May 2011, 00:12

89

11

11,924

by: bumpbot

18 Apr 2026, 23:38

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

805+ (Hard) | Distance and Speed Problems

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Bunuel

14 Apr 2025, 00:30

13

4

1,576

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

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ExpertsGlobal5

12 Jan 2026, 22:00

1

5

645

by: iamjatinagrawal

18 Apr 2026, 11:59

ER

Ann and Pierre purchased $37 worth of French fries.

605-655 (Medium) | Word Problems

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Gnpth

15 Jul 2014, 23:45

15

6

5,525

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

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Bunuel

01 Jul 2020, 02:55

12

8

5,800

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

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Bunuel

27 Jan 2016, 03:14

27

10

9,702

by: bumpbot

18 Apr 2026, 08:29

ER

Rachel is throwing a die with sides numbered consecutively

705-805 (Hard) | Probability

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Macedon

10 Nov 2013, 04:15

90

14

13,395

by: bumpbot

17 Apr 2026, 12:46

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

555-605 (Medium) | Statistics and Sets Problems

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Bunuel

08 Jan 2018, 07:39

2

1,641

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

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Bunuel

21 Jul 2016, 04:42

97

9

14,297

by: NidhiYad

17 Apr 2026, 03:19

ER

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

805+ (Hard) | Sequences

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nislam

10 Nov 2021, 10:52

12

3

5,296

by: Adit_

16 Apr 2026, 23:33

ER

Set X consists of different positive numbers arranged in ascending ord

605-655 (Medium) | Number Properties, Word Problems

605-655 (Medium) | Number Properties, Word Problems hide tags

enigma123

17 Nov 2011, 16:41

58

9

26,741

by: bumpbot

16 Apr 2026, 11:27

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

555-605 (Medium) | Statistics and Sets Problems

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Bunuel

13 Apr 2018, 01:19

5

4

1,832

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

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Bunuel

20 Feb 2014, 01:14

369

14

49,312

by: bumpbot

16 Apr 2026, 09:43

ER

N consecutive integers have a median of 24. What is the largest of the

555-605 (Medium) | Statistics and Sets Problems

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amanvermagmat

08 May 2018, 23:33

3

1,290

by: bumpbot

16 Apr 2026, 07:19

ER

Last season, a football team scored 35 more goals than it conceded.

655-705 (Hard) | Percent and Interest Problems

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Bunuel

09 Apr 2026, 19:00

6

4

614

by: Bunuel

16 Apr 2026, 04:15

ER

A local arts center hosted a weekend illustration workshop.

555-605 (Medium) | Word Problems

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Bunuel

09 Apr 2026, 19:00

5

3

523

by: Bunuel

16 Apr 2026, 03:30