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

79,168

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

188,791

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

488,383

by: bb

29 Aug 2025, 13:27

ER

The sum of the four integers a, b, c, and d is 24. How many of these

555-605 (Medium) | Number Properties

555-605 (Medium) | Number Properties hide tags

Bunuel

02 May 2022, 01:30

5

4

2,074

by: Bunuel

13 Jan 2026, 04:20

ER

If n is an integer, xy does not equal zero, and x^n = y^n, what is

705-805 (Hard) | Exponents, Inequalities

705-805 (Hard) | Exponents, Inequalities hide tags

Bunuel

10 Jun 2018, 05:19

11

4

3,209

by: bumpbot

13 Jan 2026, 00:38

ER

If x and y are positive and x + y = 20, is y > x?

805+ (Hard) | Algebra +3 tags

805+ (Hard) | Algebra, Arithmetic, Multiples and Factors, Number Properties hide tags

chetan2u

02 Jun 2018, 21:39

8

4

2,340

by: bumpbot

13 Jan 2026, 00:29

ER

There are 600 homes in a neighborhood, some of which are government

555-605 (Medium) | Overlapping Sets

555-605 (Medium) | Overlapping Sets hide tags

ExpertsGlobal5

05 Jan 2026, 22:00

2

4

516

by: ExpertsGlobal5

11 Jan 2026, 05:45

ER -1

As part of an endorsement deal, a shoe company pays an athlete a fixed

705-805 (Hard) | Word Problems

705-805 (Hard) | Word Problems hide tags

ExpertsGlobal5

05 Jan 2026, 22:00

4

617

by: ExpertsGlobal5

11 Jan 2026, 04:45

ER

Alice works from Monday to Friday only. How many days does she work in

705-805 (Hard) | Word Problems

705-805 (Hard) | Word Problems hide tags

MathRevolution

27 Apr 2018, 01:09

4

2,727

by: bumpbot

10 Jan 2026, 23:58

ER

What was John's average driving speed in miles per hour during a 15-mi

505-555 (Easy) | Word Problems

505-555 (Easy) | Word Problems hide tags

GMATBusters

15 Dec 2018, 07:03

33

4

16,316

by: bumpbot

10 Jan 2026, 20:21

ER

A, B and C receive a salary. Salary of A is what percent less than sal

605-655 (Medium) | Arithmetic, Percent and Interest Problems

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

amanvermagmat

06 Apr 2018, 05:13

11

4

3,515

by: bumpbot

10 Jan 2026, 15:01

ER

Of 300 members in an organization, each German

605-655 (Medium) | Statistics and Sets Problems

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

Kritesh

17 May 2017, 13:13

12

4

4,469

by: bumpbot

10 Jan 2026, 10:20

ER

Two cars, A and B, each traveled a distance of 550 miles. Did car A us

Sub 505 (Easy) | Distance and Speed Problems

Sub 505 (Easy) | Distance and Speed Problems hide tags

Bunuel

11 Apr 2017, 23:04

5

4

3,288

by: bumpbot

08 Jan 2026, 03:33

ER

In a class of 80 students, how many students play volleyball?

655-705 (Hard) | Overlapping Sets

655-705 (Hard) | Overlapping Sets hide tags

ExpertsGlobal5

29 Dec 2025, 22:00

8

4

673

by: Bunuel

07 Jan 2026, 14:02

ER

Data Sufficiency Pack 4, Question 3) On a number line...

705-805 (Hard) | Absolute Values, Number Properties

705-805 (Hard) | Absolute Values, Number Properties hide tags

EMPOWERgmatRichC

20 Nov 2015, 15:23

9

4

4,197

by: bumpbot

05 Jan 2026, 22:28

ER

Of the 100 people, 72% bought stocks and 65% bought bonds. What is the

555-605 (Medium) | Overlapping Sets

555-605 (Medium) | Overlapping Sets hide tags

MathRevolution

24 Apr 2017, 02:48

6

4

2,970

by: bumpbot

03 Jan 2026, 09:16

ER

If x, y, and z are integers, is x/(yz) an integer?

705-805 (Hard) | Multiples and Factors, Number Properties

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

Bunuel

21 Mar 2022, 06:05

6

4

3,159

by: bumpbot

03 Jan 2026, 06:18

ER

if x and y are positive integers, is xy evenly divisible by 4?

555-605 (Medium) | Multiples and Factors

555-605 (Medium) | Multiples and Factors hide tags

GKomoku

10 Apr 2020, 04:22

5

4

3,500

by: RJJ

03 Jan 2026, 04:00

ER

An 80-ounce juice mix is made up of only apple, grape, and pomegranate

555-605 (Medium) | Mixture Problems

555-605 (Medium) | Mixture Problems hide tags

Bunuel

05 Sep 2024, 01:30

4

1,650

by: ankushsambare

02 Jan 2026, 10:13

ER

Is a^b > b^a?

655-705 (Hard) | Algebra, Inequalities

655-705 (Hard) | Algebra, Inequalities hide tags

fozzzy

20 May 2013, 23:31

6

4

3,221

by: bumpbot

31 Dec 2025, 03:23

ER

If x and y are non-zero integers, is x divisible by 11?

655-705 (Hard) | Multiples and Factors

655-705 (Hard) | Multiples and Factors hide tags

RoberJunior

09 Mar 2016, 05:07

9

4

4,673

by: bumpbot

31 Dec 2025, 03:13

ER

If x is a perfect square greater than 1, what is the value of x?

655-705 (Hard) | Multiples and Factors, Number Properties

655-705 (Hard) | Multiples and Factors, Number Properties hide tags

Bunuel

13 Dec 2016, 10:56

4

3,624

by: bumpbot

31 Dec 2025, 02:48

ER

Two trains travel at constant speeds. What is the ratio of the slower

655-705 (Hard) | Distance and Speed Problems

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

fskilnik

26 Mar 2019, 10:58

22

4

4,100

by: bumpbot

30 Dec 2025, 11:00

ER

The costs of equities of type A and type B (in dollars) are two differ

705-805 (Hard) | Word Problems

705-805 (Hard) | Word Problems hide tags

Bunuel

06 Sep 2019, 10:54

5

4

5,703

by: bumpbot

29 Dec 2025, 22:30

ER

Are the standard deviations of set A and set B the same? 1) n=6 2) S

655-705 (Hard) | Statistics and Sets Problems

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

BillyZ

21 Feb 2017, 17:46

29

4

4,044

by: flippedeclipse

29 Dec 2025, 20:49

ER

Is a^8 < 25?

655-705 (Hard) | Inequalities

655-705 (Hard) | Inequalities hide tags

EBITDA

12 Jul 2016, 04:10

2

4

2,475

by: bumpbot

26 Dec 2025, 03:02

ER

If px = qy, is x/y an integer?

705-805 (Hard) | Number Properties

705-805 (Hard) | Number Properties hide tags

mau5

19 May 2013, 07:49

9

4

4,141

by: bumpbot

26 Dec 2025, 00:01

ER

For Company A, by what percent did profit increase this year over last

605-655 (Medium) | Percent and Interest Problems

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

Bunuel

10 Oct 2024, 01:30

9

4

2,659

by: bumpbot

25 Dec 2025, 23:28

ER

Two car, S and T, each traveled a distance of 50 miles. Did car S use

Sub 505 (Easy) | Distance and Speed Problems

Sub 505 (Easy) | Distance and Speed Problems hide tags

Bunuel

15 Dec 2014, 09:14

18

4

13,640

by: bumpbot

25 Dec 2025, 06:05

ER

On a certain day it took Bill three times as long to drive from home

555-605 (Medium) | Distance and Speed Problems

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

dobinnoli

30 Sep 2022, 14:30

113

4

27,419

by: bumpbot

23 Dec 2025, 20:25

In a certain senior citizens club, are more than 1/4 of the members

Sub 505 (Easy) | Word Problems

Sub 505 (Easy) | Word Problems hide tags

Fedemaravilla

27 Oct 2017, 13:17

15

4

7,967

by: bumpbot

23 Dec 2025, 03:44

ER

Josh purchased several widgets for a total cost of $480. Every widget

555-605 (Medium) | Word Problems

555-605 (Medium) | Word Problems hide tags

Bunuel

03 Mar 2021, 14:49

4

5,122

by: Bhavya04

22 Dec 2025, 04:21

ER

The average (arithmetic mean) of a list of numbers is what percent of

605-655 (Medium) | Statistics and Sets Problems

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

Bunuel

05 Oct 2020, 10:15

20

4

6,474

by: bumpbot

21 Dec 2025, 11:41

ER

A box contains only white balls and black balls. What is the probabili

Sub 505 (Easy) | Probability

Sub 505 (Easy) | Probability hide tags

parkhydel

28 Apr 2020, 04:14

16

4

12,975

by: bumpbot

20 Dec 2025, 13:22

ER

At 11 AM, Abraham leaves from his home for a meeting that is scheduled

555-605 (Medium) | Distance and Speed Problems, Word Problems

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

EgmatQuantExpert

22 Jan 2017, 01:52

7

4

5,145

by: bumpbot

18 Dec 2025, 21:55

ER

Two trains (Train A and Train B) leave their stations at exactly 6 pm

505-555 (Easy) | Distance and Speed Problems

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

cat2010

27 Nov 2022, 23:44

10

4

2,963

by: bumpbot

18 Dec 2025, 07:58

ER

If x1, x2, x3… xn is a sequence such that xn=n/2 for all values x≥1, i

655-705 (Hard) | Inequalities, Sequences

655-705 (Hard) | Inequalities, Sequences hide tags

Bunuel

28 Sep 2017, 04:56

12

4

5,297

by: bumpbot

17 Dec 2025, 09:51

ER

At a certain fiorist shop, roses can be purchased either individually

805+ (Hard) | Word Problems

805+ (Hard) | Word Problems hide tags

Bunuel

11 Aug 2021, 08:30

14

4

3,799

by: Annukiran

17 Dec 2025, 02:23

ER

A bookstore bought 24 books, each at an equal price. Each of the first

655-705 (Hard) | Word Problems

655-705 (Hard) | Word Problems hide tags

Bunuel

06 Sep 2024, 01:30

14

4

2,338

by: bumpbot

16 Dec 2025, 22:49

ER

In a certain set of 300 stocks, each is priced at either $50, $100, or

805+ (Hard) | Word Problems

805+ (Hard) | Word Problems hide tags

Bunuel

28 Aug 2015, 02:33

29

4

3,558

by: bumpbot

16 Dec 2025, 20:29

ER

The data collected for 20 years of population surveys of a city C were

705-805 (Hard) | Sequences

705-805 (Hard) | Sequences hide tags

gmatophobia

23 Apr 2023, 23:41

8

4

2,152

by: bumpbot

16 Dec 2025, 08:03

ER

Did Sally pay less than x dollars, including sales tax, for her

505-555 (Easy) | Word Problems

505-555 (Easy) | Word Problems hide tags

Bunuel

16 Dec 2014, 05:28

19

4

12,060

by: Saurav1408

14 Dec 2025, 23:35

ER

Bottles A and B contain alcohol-water solutions in ratios of 1:3 and

555-605 (Medium) | Mixture Problems

555-605 (Medium) | Mixture Problems hide tags

Bunuel

11 Oct 2024, 01:30

12

4

2,420

by: bumpbot

14 Dec 2025, 05:20

ER

The students in College X must take two, and no more, of these five

555-605 (Medium) | Non-Math Related

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

gmatt1476

30 May 2024, 12:26

19

4

6,209

by: bumpbot

13 Dec 2025, 17:32

ER

In a group of men and women, what is the average (arithmetic mean)

505-555 (Easy) | Statistics and Sets Problems

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

ExpertsGlobal5

11 Dec 2025, 02:22

3

4

510

by: ExpertsGlobal5

13 Dec 2025, 12:15

ER

In a group of 100, how many drink both tea and coffee?

505-555 (Easy) | Overlapping Sets

505-555 (Easy) | Overlapping Sets hide tags

ExpertsGlobal5

08 Dec 2025, 23:12

3

4

550

by: ExpertsGlobal5

13 Dec 2025, 03:15

ER

Fees for the late return of a rental item are equal to the normal hour

655-705 (Hard) | Word Problems

655-705 (Hard) | Word Problems hide tags

Bunuel

15 Aug 2019, 06:51

3

4

1,594

by: bumpbot

12 Dec 2025, 06:57

ER

If a machine depreciates each year at the rate of 50% of its previou

655-705 (Hard) | Percent and Interest Problems

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

rheam25

15 Feb 2020, 05:49

11

4

3,967

by: bumpbot

12 Dec 2025, 03:23

ER

If two copying machines work simultaneously at their respective

555-605 (Medium) | Work and Rate Problems

555-605 (Medium) | Work and Rate Problems hide tags

udaymathapati

08 Sep 2010, 11:40

81

4

23,581

by: bumpbot

11 Dec 2025, 13:52

ER

How long did it take Carlos to drive nonstop from his home to Atlanta

655-705 (Hard) | Distance and Speed Problems

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

Bunuel

19 Jun 2024, 01:30

7

4

1,691

by: bumpbot

11 Dec 2025, 01:24

ER

In a certain list of numbers, the greatest number is 100. Is the

655-705 (Hard) | Sequences, Statistics and Sets Problems

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

draditya

06 Oct 2015, 10:22

44

4

10,728

by: bumpbot

09 Dec 2025, 08:29

ER

If X is a positive integer, is X a perfect square?

655-705 (Hard) | Multiples and Factors, Number Properties

655-705 (Hard) | Multiples and Factors, Number Properties hide tags

StringArgs

02 Jul 2022, 23:26

14

4

4,591

by: bumpbot

09 Dec 2025, 07:44

ER

What is the remainder when positive integer x is divided by 6?

655-705 (Hard) | Multiples and Factors

655-705 (Hard) | Multiples and Factors hide tags

Bunuel

02 Sep 2022, 05:10

4

1,684

by: bumpbot

09 Dec 2025, 00:59