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

178

15

78,885

by: thisisakr

16 Apr 2026, 11:46

ER

100 Hardest and easiest questions for DS as of April 2026

1, 2

Bunuel

01 Jan 2026, 05:45

857

24

188,619

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

488,092

by: bb

29 Aug 2025, 13:27

ER

If z is an integer smaller than integer n but greater than zero, is z

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

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

Bunuel

13 May 2021, 20:00

9

3

5,950

by: bumpbot

22 Oct 2022, 11:54

ER

In the rectangle coordinate system, triangle ABC has a

605-655 (Medium) | Geometry

605-655 (Medium) | Geometry hide tags

eladshush

04 Oct 2010, 06:27

6

5

5,950

by: bumpbot

29 Apr 2019, 23:29

ER

At a restaurant, Luis left a tip for his waiter equal to 20 percent of

505-555 (Easy) | Word Problems

505-555 (Easy) | Word Problems hide tags

Sajjad1994

22 Feb 2017, 03:27

4

2

5,946

by: BrentGMATPrepNow

22 Feb 2017, 08:20

ER

Is 11x/23 < 7x/13 ?

555-605 (Medium) | Inequalities

555-605 (Medium) | Inequalities hide tags

Bunuel

29 Sep 2015, 21:14

11

6

5,945

by: bumpbot

13 Nov 2023, 05:20

ER

Is x^3 > 1? (1) x > -2 (2) 2x – (b – c) < c – (b – 2)

555-605 (Medium) | Inequalities

555-605 (Medium) | Inequalities hide tags

ankita1211

10 Aug 2018, 01:08

13

3

5,943

by: bumpbot

14 Dec 2025, 00:20

ER

If y^k/y^5k = m, what is k?

805+ (Hard) | Exponents

805+ (Hard) | Exponents hide tags

Bunuel

03 Sep 2017, 06:21

50

15

5,941

by: bumpbot

24 Mar 2022, 03:34

ER

In a given class, what is the average (arithmetic mean) height per pup

Sub 505 (Easy) | Word Problems

Sub 505 (Easy) | Word Problems hide tags

Bunuel

17 Dec 2014, 07:41

5

5,940

by: bumpbot

04 Jan 2024, 12:50

ER

After a long career, John C. Walden is retiring. If there are 25 assoc

555-605 (Medium) | Word Problems

555-605 (Medium) | Word Problems hide tags

Bunuel

26 Jun 2015, 02:19

5

10

5,939

by: bumpbot

08 Jan 2025, 03:33

ER

What is the average (arithmetic mean) of a, b, c, d, e, and f with a <

Sub 505 (Easy) | Statistics and Sets Problems

Sub 505 (Easy) | Statistics and Sets Problems hide tags

Bunuel

23 May 2020, 06:35

2

4

5,937

by: BrentGMATPrepNow

12 Mar 2022, 06:46

ER

If x is a non positive integer, what is the value of x?

655-705 (Hard) | Absolute Values, Algebra

655-705 (Hard) | Absolute Values, Algebra hide tags

Montyyy95

23 Apr 2020, 03:43

9

2

5,932

by: jack_tay

13 Jan 2024, 22:18

ER

Is x greater than x^3 ?

705-805 (Hard) | Inequalities

705-805 (Hard) | Inequalities hide tags

lumone

20 Apr 2014, 12:26

9

10

5,931

by: bumpbot

03 Dec 2021, 11:19

ER

Is integer x prime?

555-605 (Medium) | Multiples and Factors, Number Properties

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

Bunuel

23 Apr 2015, 03:44

15

6

5,930

by: bumpbot

08 Aug 2024, 22:41

ER

If n is a four-digit positive integer, then what is the tens

805+ (Hard) | Number Properties

805+ (Hard) | Number Properties hide tags

fozzzy

15 Jun 2013, 08:02

35

10

5,929

by: bumpbot

06 Apr 2025, 19:57

ER

If p is a positive integer less than 29 and q is the remaind

605-655 (Medium) | Remainders

605-655 (Medium) | Remainders hide tags

lumone

15 Jun 2014, 05:50

5

7

5,929

by: bumpbot

19 Jun 2023, 07:18

ER

If M=P*Q, where P and Q are different positive integers,

555-605 (Medium) | Multiples and Factors, Number Properties

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

yaj

08 Aug 2013, 11:13

22

5

5,928

by: bumpbot

25 Apr 2019, 12:35

ER

A family has only one kid. The father says “after „n‟ years, my age wi

805+ (Hard) | Word Problems

805+ (Hard) | Word Problems hide tags

Bunuel

25 Sep 2019, 05:36

3

2

5,926

by: bumpbot

13 Feb 2026, 05:50

ER

Are positive integers j and k both greater than m?

605-655 (Medium) | Inequalities, Number Properties

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

metallicafan

14 Dec 2011, 09:31

12

8

5,921

by: bumpbot

16 Dec 2018, 09:27

ER

Is yz = x? (1) y > x/z (2) z < 0

555-605 (Medium) | Inequalities

555-605 (Medium) | Inequalities hide tags

Bunuel

10 Apr 2015, 05:15

12

8

5,920

by: Bunuel

04 Jan 2023, 03:32

ER

If |x| = |y|, is x/y = -1 (1) x < 0 (2) y > 0

Sub 505 (Easy) | Absolute Values

Sub 505 (Easy) | Absolute Values hide tags

DaniGmat77

07 Aug 2020, 10:53

13

3

5,919

by: bumpbot

04 Sep 2025, 15:20

ER

Tonya has a contract to plant saplings along the median of a highway

805+ (Hard) | Word Problems

805+ (Hard) | Word Problems hide tags

righthand

09 Aug 2020, 04:40

26

6

5,919

by: bumpbot

23 Jun 2025, 15:46

ER

If each of the bowlers in a tournament bowled an equal number of games

555-605 (Medium) | Word Problems

555-605 (Medium) | Word Problems hide tags

Bunuel

27 Dec 2015, 09:10

13

4

5,914

by: PunitJalan

04 Jun 2025, 08:03

Out of total 36 students in a class, what percent of students passed

805+ (Hard) | Arithmetic, Min-Max Problems

805+ (Hard) | Arithmetic, Min-Max Problems hide tags

amanvermagmat

20 May 2018, 11:24

54

6

5,911

by: bumpbot

13 Dec 2025, 06:58

ER

If x and y are positive numbers, is x < y?

555-605 (Medium) | Inequalities

555-605 (Medium) | Inequalities hide tags

EgmatQuantExpert

30 Jun 2018, 11:47

27

10

5,910

by: KarishmaB

07 May 2025, 22:49

ER

If p and q are consecutive even integers, is p > q?

705-805 (Hard) | Number Properties

705-805 (Hard) | Number Properties hide tags

Bunuel

11 Jul 2019, 05:46

4

6

5,910

by: bumpbot

13 Mar 2025, 11:21

ER

What is the remainder when a positive integer t is divided by 15?

655-705 (Hard) | Remainders

655-705 (Hard) | Remainders hide tags

akurathi12

06 Jan 2019, 04:25

18

5

5,910

by: bumpbot

19 Sep 2024, 00:44

ER

If c and d are positive, is d an integer ?

555-605 (Medium) | Algebra

555-605 (Medium) | Algebra hide tags

pathakshashi

23 Jul 2012, 01:40

10

3

5,910

by: bumpbot

11 May 2024, 10:11

ER

What is the probability of landing on tails at least once in

555-605 (Medium) | Probability

555-605 (Medium) | Probability hide tags

guddo

14 Aug 2024, 03:56

24

13

5,909

by: Bunuel

04 Jul 2025, 12:41

ER

If n is a positive integer, what is the remainder when n^2 is divided

655-705 (Hard) | Remainders

655-705 (Hard) | Remainders hide tags

Bunuel

22 Apr 2016, 06:38

16

7

5,906

by: bumpbot

13 Jan 2025, 10:56

ER

The ratio of the number of students in an auditorium who are seniors..

605-655 (Medium) | Fractions and Ratios, Word Problems

605-655 (Medium) | Fractions and Ratios, Word Problems hide tags

CAMANISHPARMAR

23 Jul 2018, 09:25

22

4

5,906

by: bumpbot

26 Feb 2022, 06:58

ER

If a and b are positive integers, is a divisible by 7? (1) a + 5b is

605-655 (Medium) | Multiples and Factors, Remainders

605-655 (Medium) | Multiples and Factors, Remainders hide tags

CareerGeek

17 Jul 2019, 04:52

22

3

5,904

by: bumpbot

15 Jan 2026, 22:02

ER

If x and y are both positive perfect cubes, what is x+y?

705-805 (Hard) | Number Properties

705-805 (Hard) | Number Properties hide tags

Bunuel

09 Feb 2015, 06:37

13

7

5,903

by: bumpbot

13 Jan 2022, 08:05

ER

Is y = 7?

555-605 (Medium) | Algebra

555-605 (Medium) | Algebra hide tags

Bunuel

09 Mar 2016, 13:34

14

16

5,902

by: bumpbot

14 Mar 2023, 12:43

ER

Did the XYZ Corporation have higher sales in 1988 or in 1989? Assume

655-705 (Hard) | Word Problems

655-705 (Hard) | Word Problems hide tags

Bunuel

17 Oct 2017, 08:16

3

5,902

by: bumpbot

11 Jun 2020, 04:53

ER

What is the value of p ? (1) |p |p|| = 3 (2) 2|p| = 3

605-655 (Medium) | Absolute Values

605-655 (Medium) | Absolute Values hide tags

Bunuel

29 Nov 2018, 02:13

35

12

5,896

by: bumpbot

04 Oct 2023, 16:10

ER

In the first year of a pyramid scheme, John convinced y of his friend

655-705 (Hard) | Word Problems

655-705 (Hard) | Word Problems hide tags

Nevernevergiveup

26 Sep 2016, 10:06

22

6

5,894

by: Bunuel

15 Sep 2025, 04:21

ER

If Alyssa is twice as old as Brandon, by how many years

605-655 (Medium) | Word Problems

605-655 (Medium) | Word Problems hide tags

souvik101990

18 May 2018, 11:42

10

5

5,894

by: bumpbot

09 Sep 2025, 01:27

ER

Is [(y-4)^2]^1/2 = 4 - y ?

655-705 (Hard) | Absolute Values, Inequalities

655-705 (Hard) | Absolute Values, Inequalities hide tags

Bunuel

09 Jun 2015, 02:46

31

5

5,891

by: bumpbot

13 Sep 2023, 05:31

ER

Does 4^a = 4^-a + b? (1) 16^a = 1 + ((2^2a) / (b^-1)) (2) a

655-705 (Hard) | Algebra

655-705 (Hard) | Algebra hide tags

rjkaufman21

14 Sep 2011, 10:31

14

10

5,885

by: bumpbot

19 Jul 2025, 18:13

ER

Tom and Jack are in a line to purchase iphones. How many people are in

605-655 (Medium) | Word Problems

605-655 (Medium) | Word Problems hide tags

tracyyahoo

09 Jul 2011, 03:43

6

4

5,885

by: bumpbot

17 Jun 2021, 07:24

ER

How many students are enrolled in Math? (1) There are 72 students enr

Sub 505 (Easy) | Overlapping Sets

Sub 505 (Easy) | Overlapping Sets hide tags

Bunuel

11 Jul 2019, 00:55

2

5,884

by: vinayakvaish

11 Jul 2019, 03:01

ER

A firm has at least 5 partners, of whom at least 2 are male and at

805+ (Hard) | Combinations, Probability

805+ (Hard) | Combinations, Probability hide tags

RonPurewal

12 Nov 2017, 09:27

33

14

5,883

by: bumpbot

02 Jun 2025, 10:11

ER

What is the value of the positive integer x ?

655-705 (Hard) | Remainders

655-705 (Hard) | Remainders hide tags

Bunuel

21 Nov 2019, 03:25

21

7

5,883

by: bumpbot

12 Aug 2024, 08:37

ER

Is x^2-8x+15 = 0?

555-605 (Medium) | Algebra

555-605 (Medium) | Algebra hide tags

rxs0005

24 Jul 2013, 08:17

19

7

5,883

by: Rance14

16 Jul 2024, 10:49

ER

If x, y, and z are positive integers, is x - y - z positive ?

555-605 (Medium) | Inequalities

555-605 (Medium) | Inequalities hide tags

clipea12

14 Sep 2014, 23:42

23

9

5,882

by: bumpbot

03 Dec 2023, 15:21

ER

On a graph the four corners of a certain quadrilateral

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

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

trex16864

04 Jan 2013, 03:06

9

8

5,882

by: bumpbot

17 May 2022, 00:40

ER

Joe is older to Lloyd by five years. Ten years ago, John was

Poor Quality

Poor Quality hide tags

powerka

29 Aug 2009, 00:13

9

5,882

by: chuotnhat1704

30 Oct 2010, 02:55

ER

Given 2m^2 + n^2 = 27, what is the value of m?

555-605 (Medium) | Algebra

555-605 (Medium) | Algebra hide tags

Anasarah

29 Mar 2018, 21:17

7

6

5,879

by: SalahT

15 Aug 2021, 08:05

ER

How far in miles is city A from city B?

Poor Quality

Poor Quality hide tags

Smita04

11 Feb 2012, 05:10

3

4

5,879

by: mikemcgarry

11 Feb 2012, 15:35

ER

For a certain set of n numbers, where n > 2, is the average (arithmet

805+ (Hard) | Number Properties

805+ (Hard) | Number Properties hide tags

Bunuel

14 Jan 2015, 02:50

29

6

5,878

by: bumpbot

28 Aug 2021, 06:21

ER

is x negative?

555-605 (Medium) | Number Properties

555-605 (Medium) | Number Properties hide tags

1, 2

GMATBusters

04 Jan 2020, 18:57

7

23

5,877

by: ScottTargetTestPrep

10 Sep 2020, 07:14