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

89,126

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

194,288

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

496,299

by: bb

23 Aug 2026, 13:01

What was the average monthly electricity usage, in kilowatt-hours (kWh

555-605 (Medium) | Statistics and Sets Problems

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

Cneltonmp

05 Jul 2026, 09:27

1

3

397

by: Kinshook

09 Jul 2026, 09:38

What is the sum of the terms in a sequence of consecutive multiples of

505-555 (Easy) | Sequences

505-555 (Easy) | Sequences hide tags

Bunuel

13 Jan 2023, 02:30

3

2,198

by: bumpbot

09 Jul 2026, 08:09

On the Celsius scale of temperature, water freezes at 0° and boils at

605-655 (Medium) | Word Problems

605-655 (Medium) | Word Problems hide tags

Borrat

22 Mar 2026, 06:53

12

8

2,156

by: FirstTown

09 Jul 2026, 05:52

ER

Last year, a certain company began manufacturing product X

805+ (Hard) | Word Problems

805+ (Hard) | Word Problems hide tags

1, 2

Walkabout

01 Aug 2021, 04:04

926

22

86,447

by: Bunuel

09 Jul 2026, 05:15

ER

If 3x + 5 < x + 11, is x prime?

805+ (Hard) | Number Properties

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1, 2

monir6000

20 Jan 2013, 05:30

102

21

20,213

by: Bunuel

09 Jul 2026, 04:56

Two chocolates need to be picked from a box with replacement.

705-805 (Hard) | Probability

705-805 (Hard) | Probability hide tags

Bunuel

09 Aug 2024, 01:30

13

3

3,162

by: gullyboy09

09 Jul 2026, 03:25

ER

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

555-605 (Medium) | Sequences

555-605 (Medium) | Sequences hide tags

Bunuel

01 Mar 2023, 02:30

7

3

2,298

by: roushanpandey65

08 Jul 2026, 20:07

ER

Driving at their respective constant speeds along the same route,

655-705 (Hard) | Distance and Speed Problems

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

mbaguy2025

03 Dec 2023, 06:03

155

10

15,149

by: ipsamvel

08 Jul 2026, 13:30

ER

How might career advancement be described as potentially linked to

555-605 (Medium) | Non-Math Related

555-605 (Medium) | Non-Math Related hide tags

guddo

13 Aug 2024, 03:24

32

11

6,528

by: bumpbot

08 Jul 2026, 08:35

ER

Yesterday between 9:00 a.m. and 6:00 p.m. at Airport X, all flights to

605-655 (Medium) | Word Problems

605-655 (Medium) | Word Problems hide tags

Bunuel

03 Aug 2018, 10:40

167

19

30,088

by: Usernamevisible

08 Jul 2026, 06:12

ER

Are more than one half of the females at the company married with

655-705 (Hard) | Overlapping Sets

655-705 (Hard) | Overlapping Sets hide tags

Bunuel

02 May 2025, 00:30

10

6

1,479

by: TwoSpear

08 Jul 2026, 03:27

ER

During a particular trip, how much time had elapsed once 90% of the to

655-705 (Hard) | Distance and Speed Problems

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

Bunuel

14 Nov 2025, 00:08

9

2

1,129

by: SharukhB

08 Jul 2026, 03:00

ER

In a class, there are 170 students, each plays at least one out of 3

655-705 (Hard) | Overlapping Sets

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Bunuel

25 Apr 2025, 00:30

9

4

1,826

by: nammolestias

08 Jul 2026, 01:46

ER

What is the median number of cloths sold in the last 15 days?

505-555 (Easy) | Statistics and Sets Problems

505-555 (Easy) | Statistics and Sets Problems hide tags

MathRevolution

13 Oct 2016, 07:35

6

3

2,431

by: bumpbot

07 Jul 2026, 23:47

ER

What is the average (arithmetic mean) of A, B, and 4C?

505-555 (Easy) | Statistics and Sets Problems

505-555 (Easy) | Statistics and Sets Problems hide tags

prateekbhatt

20 Sep 2013, 06:53

6

5

4,333

by: bumpbot

07 Jul 2026, 23:42

Energy Source: Annual Generation (GWh) Solar: 2,200 Wind

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

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

bhargavhhhhhhhh

15 Apr 2025, 09:02

16

4

3,300

by: Bunuel

07 Jul 2026, 23:16

Out of the 60 employees of a startup, only 10 are non-engineers.

605-655 (Medium) | Overlapping Sets

605-655 (Medium) | Overlapping Sets hide tags

Bunuel

30 Aug 2024, 01:30

5

2

1,386

by: MarkGMATMentor

07 Jul 2026, 20:21

ER

The table shows the sales forecast from January to June of last year

655-705 (Hard) | Word Problems

655-705 (Hard) | Word Problems hide tags

1, 2, 3

GMATCoachBen

06 Feb 2024, 19:14

215

47

25,076

by: bishal128

07 Jul 2026, 19:59

Given an arithmetic sequence of N terms in which the common difference

Sub 505 (Easy) | Sequences

Sub 505 (Easy) | Sequences hide tags

Bunuel

10 Oct 2019, 02:01

3

2

2,677

by: MarkGMATMentor

07 Jul 2026, 19:15

ER

Each term of set T is a multiple of 5, is the standard deviation of

555-605 (Medium) | Statistics and Sets Problems

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Jivana

04 Sep 2009, 18:29

136

7

20,134

by: bumpbot

07 Jul 2026, 14:25

ER

Angela borrowed P dollars at 6 percent annual interest compounded

705-805 (Hard) | Percent and Interest Problems

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

KarmaTheCat

06 Jan 2024, 06:21

123

9

14,647

by: Usernamevisible

07 Jul 2026, 11:53

ER

In a sequence, S, the ratio of each successive term is fixed. If the

705-805 (Hard) | Sequences

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nislam

28 Nov 2021, 10:53

12

7

1,938

by: Bunuel

07 Jul 2026, 08:53

ER

GMAT Club World Cup 2026 (Day 1): Six carsA, B, C, D, E, and Fare

805+ (Hard) | Non-Math Related

805+ (Hard) | Non-Math Related hide tags

1, 2...6, 7

Bunuel

06 Jul 2026, 08:00

92

123

2,474

by: yashsharma1

07 Jul 2026, 08:09

ER

If a, b, and c are positive integers, what is the range of the five nu

655-705 (Hard) | Statistics and Sets Problems

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

surupab

23 Jun 2020, 00:06

207

19

47,676

by: Bunuel

07 Jul 2026, 03:28

ER

Solutions A, B, and C are mixed. What is the ratio of alcohol and

605-655 (Medium) | Mixture Problems

605-655 (Medium) | Mixture Problems hide tags

ExpertsGlobal5

15 Jan 2026, 22:00

12

5

1,081

by: egmat

07 Jul 2026, 02:29

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

40

5

9,457

by: AllisonBell

06 Jul 2026, 17:03

Sequence S is such that the difference between a term and its previous

Sub 505 (Easy) | Sequences

Sub 505 (Easy) | Sequences hide tags

Bunuel

14 Apr 2021, 08:00

3

2,001

by: bumpbot

06 Jul 2026, 14:52

ER

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

805+ (Hard) | Overlapping Sets

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edwin.que

01 Nov 2023, 22:31

165

9

19,989

by: chetan2u

06 Jul 2026, 12:19

Elements of List A and List B are combined to form List C. Is the

655-705 (Hard) | Statistics and Sets Problems

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

TBT

12 Mar 2023, 09:55

13

4

3,668

by: bumpbot

06 Jul 2026, 11:28

ER

In 2022, 8 percent of the cars produced by a certain factory were

655-705 (Hard) | Percent and Interest Problems

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

Redmaster2

23 Jun 2025, 02:40

6

2

1,083

by: bumpbot

06 Jul 2026, 09:40

In a spelling competition, competitors were required to spell 108

805+ (Hard) | Overlapping Sets

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Bunuel

30 May 2024, 01:30

17

9

2,194

by: egmat

06 Jul 2026, 09:36

ER

If x is not equal to 0, is |x| less than 1? (1) x/|x|< x (2) |x| > x

805+ (Hard) | Absolute Values, Inequalities

805+ (Hard) | Absolute Values, Inequalities hide tags

1, 2, 3

Hussain15

01 Nov 2009, 09:25

534

50

148,304

by: egmat

06 Jul 2026, 09:34

What is the standard deviation of set X, containing consecutive odd in

655-705 (Hard) | Statistics and Sets Problems

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

Bunuel

23 Jan 2023, 02:30

8

2

1,865

by: Ldsiam898

06 Jul 2026, 09:03

ER

A bag contains only black red and gold balls. Any ball is equally like

805+ (Hard) | Probability

805+ (Hard) | Probability hide tags

Bunuel

11 Oct 2021, 01:30

13

8

4,865

by: Vivek1707

06 Jul 2026, 07:17

ER

If Father's age is 1 less than twice the son's age, what is

805+ (Hard) | Word Problems

805+ (Hard) | Word Problems hide tags

docabuzar

31 Jan 2012, 13:24

109

15

15,698

by: bumpbot

06 Jul 2026, 06:11

If the arithmetic mean of a set of n measurements was found to be

555-605 (Medium) | Statistics and Sets Problems

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

Bunuel

29 Sep 2023, 01:30

8

2

2,260

by: bumpbot

06 Jul 2026, 05:09

ER

Is the range of a combined set (S,T) bigger than the sum of

655-705 (Hard) | Statistics and Sets Problems

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

satishreddy

29 Oct 2010, 15:31

28

6

9,473

by: bumpbot

06 Jul 2026, 00:48

ER

During a certain GMAT marathon, the average blood pressure of female

605-655 (Medium) | Mixture Problems

605-655 (Medium) | Mixture Problems hide tags

GMATNinja

18 Apr 2022, 22:45

33

6

5,765

by: BongBideshini

05 Jul 2026, 22:59

ER

One kilogram of a certain coffee blend consists of x kilogram of type

805+ (Hard) | Mixture Problems, Word Problems

805+ (Hard) | Mixture Problems, Word Problems hide tags

imadkho

25 Mar 2012, 11:23

377

16

50,080

by: bumpbot

05 Jul 2026, 15:15

ER

A contractor combined x tons of a gravel mixture that contained 10 per

655-705 (Hard) | Mixture Problems

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1, 2

ugimba

11 Jun 2019, 04:06

367

20

76,553

by: bumpbot

05 Jul 2026, 15:15

ER

Is x a multiple of 12?

705-805 (Hard) | Multiples and Factors

705-805 (Hard) | Multiples and Factors hide tags

dreambeliever

01 Oct 2017, 05:01

43

12

10,401

by: GulfTube

05 Jul 2026, 11:25

ER

An investor deposits $62,500 in a one-year savings certificate that

505-555 (Easy) | Percent and Interest Problems

505-555 (Easy) | Percent and Interest Problems hide tags

Bunuel

02 Jul 2026, 19:00

4

3

512

by: Bunuel

05 Jul 2026, 10:45

ER

A cafe sold drinks throughout a certain week. What was the average

555-605 (Medium) | Statistics and Sets Problems

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

Bunuel

02 Jul 2026, 19:00

4

3

480

by: Bunuel

05 Jul 2026, 09:30

ER

A training program gave a final exam to all participants.

805+ (Hard) | Mixture Problems, Word Problems

805+ (Hard) | Mixture Problems, Word Problems hide tags

Bunuel

01 Jul 2026, 19:00

10

3

659

by: Bunuel

05 Jul 2026, 08:15

ER

At the end of Monday, a bookstore display had only hardcover books and

805+ (Hard) | Fractions and Ratios

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Bunuel

01 Jul 2026, 19:00

5

3

440

by: Bunuel

05 Jul 2026, 07:00

ER

The 10 students in a history class recently took an examination. What

555-605 (Medium) | Statistics and Sets Problems

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

1, 2

Bunuel

24 Jun 2018, 21:15

376

22

50,156

by: Usernamevisible

05 Jul 2026, 06:54

ER

A vendor bought 40 identical phone chargers for $35 each. The vendor

605-655 (Medium) | Word Problems

605-655 (Medium) | Word Problems hide tags

Bunuel

30 Jun 2026, 19:00

5

3

485

by: Bunuel

05 Jul 2026, 06:45

ER

What is the ratio of the average (arithmetic mean) height of

555-605 (Medium) | Statistics and Sets Problems

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

LADodgers

05 Nov 2004, 18:38

445

18

67,944

by: bumpbot

05 Jul 2026, 06:43

ER

A green bucket and a blue bucket are each filled to capacity with

805+ (Hard) | Word Problems

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Bunuel

05 Jul 2026, 05:41

47

10

11,184

by: Rishab2409

05 Jul 2026, 05:40

ER

Each of the 25 balls in a certain box is either red, blue or white and

605-655 (Medium) | Overlapping Sets, Probability

605-655 (Medium) | Overlapping Sets, Probability hide tags

1, 2, 3

lexis

05 Feb 2019, 06:00

653

41

105,923

by: Bunuel

05 Jul 2026, 05:33