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

79,076

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

188,730

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

488,294

by: bb

29 Aug 2025, 13:27

ER

X is the sum of 5 consecutive positive integers a, b, c, d, e such

805+ (Hard) | Multiples and Factors

805+ (Hard) | Multiples and Factors hide tags

amanvermagmat

27 Jun 2018, 21:50

6

2

1,858

by: bumpbot

22 Jun 2024, 19:25

ER

Students in a class are arranged to form groups of 4 members each.

705-805 (Hard) | Number Properties, Remainders

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

Bunuel

08 May 2024, 01:30

11

5

1,858

by: samarpan.g28

03 Jul 2024, 09:07

ER

A positive integer K leaves no remainder when divided by an integer Y

805+ (Hard) | Number Properties

805+ (Hard) | Number Properties hide tags

Bunuel

14 Jan 2021, 01:15

10

3

1,858

by: bumpbot

14 May 2025, 16:00

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If x lies between zero and one, is the tenths digit of x zero ?

805+ (Hard) | Number Properties

805+ (Hard) | Number Properties hide tags

Kaushik786

12 Mar 2021, 21:54

14

4

1,857

by: rsrighosh

20 Mar 2021, 08:26

For all values of x, x^2 - rx - s = (x - t)^2, where r, s and t are co

705-805 (Hard) | Algebra

705-805 (Hard) | Algebra hide tags

contactakanksha

03 Mar 2020, 06:46

5

2

1,857

by: Oppenheimer1945

15 Jan 2024, 08:24

If p is an integer, is p odd? (1) p 2 is not an odd integer.

555-605 (Medium) | Number Properties

555-605 (Medium) | Number Properties hide tags

Carcass

23 Sep 2022, 03:16

6

2

1,857

by: bumpbot

13 Feb 2024, 03:10

ER

Company Q has 18,000 employees, 40 percent of whom are married. What

605-655 (Medium) | Word Problems

605-655 (Medium) | Word Problems hide tags

Bunuel

07 Dec 2023, 02:30

4

2

1,857

by: bumpbot

26 Mar 2025, 07:39

ER

If Y is an integer, is Y/4 an integer?

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

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

Bunuel

04 Apr 2017, 05:46

2

3

1,856

by: matthewsmith_89

05 Apr 2017, 09:29

ER

P, Q, and R are three different points on a plane. Which one of the li

555-605 (Medium) | Geometry

555-605 (Medium) | Geometry hide tags

Bunuel

18 Jul 2019, 23:52

2

1,856

by: DarkHorse2019

04 Aug 2019, 12:35

ER

If n is a positive integer, is 30 a factor of n?

505-555 (Easy) | Multiples and Factors

505-555 (Easy) | Multiples and Factors hide tags

Bunuel

24 May 2022, 02:16

4

3

1,856

by: RastogiSarthak99

07 Jun 2022, 12:16

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Is x+y>z?

555-605 (Medium) | Geometry

555-605 (Medium) | Geometry hide tags

rohan2345

01 Aug 2019, 05:44

1

3

1,856

by: hirakrintu

04 Aug 2023, 06:18

ER

Two boys, Joe and Seth, can mow a lawn in 2 hours thirty minutes. If

Sub 505 (Easy) | Distance and Speed Problems

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

Bunuel

31 Jul 2022, 04:15

4

1,856

by: bumpbot

24 Sep 2024, 02:26

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If x^3 < x^2, is x < 0 ?

605-655 (Medium) | Absolute Values, Inequalities

605-655 (Medium) | Absolute Values, Inequalities hide tags

AnisMURR

31 Oct 2018, 01:45

1

3

1,855

by: GMATinsight

31 Oct 2018, 20:24

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x represents the number of kids on a school bus. What is x?

Sub 505 (Easy) | Number Properties

Sub 505 (Easy) | Number Properties hide tags

TheUltimateWinner

16 Apr 2021, 12:22

3

7

1,855

by: ManyataM

16 Apr 2021, 13:36

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In the figure below, l1 and l2 intersect l3. Do l1 and l2 intersect to

655-705 (Hard) | Geometry

655-705 (Hard) | Geometry hide tags

Bunuel

24 Apr 2022, 10:00

3

1,855

by: AndrewN

03 Jul 2022, 09:07

ER

If s and t are integers, is ps > pt?

555-605 (Medium) | Inequalities

555-605 (Medium) | Inequalities hide tags

Bunuel

13 Mar 2017, 08:20

2

1,854

by: mbaORnoMBA

13 Feb 2019, 23:55

ER

Is x^3 an odd integer?

705-805 (Hard) | Number Properties

705-805 (Hard) | Number Properties hide tags

Bunuel

21 Aug 2007, 19:34

3

1,854

by: bumpbot

03 Apr 2025, 17:46

ER

If wx 0, is |(|w| - x)|/|x| > 0

655-705 (Hard) | Absolute Values, Inequalities

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

Bunuel

07 Jun 2023, 01:30

4

3

1,853

by: mounj223

29 Jun 2023, 08:46

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Is (7 + x)/(8 + x) 7/8? (1) x <= 0 (2) x >= 0

655-705 (Hard) | Inequalities

655-705 (Hard) | Inequalities hide tags

Bunuel

15 Apr 2021, 01:30

7

4

1,852

by: Bunuel

16 Apr 2021, 01:15

Is the Standard Deviation of four positive numbers a, b, c, d greater

555-605 (Medium) | Statistics and Sets Problems

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

amanvermagmat

13 Jan 2019, 22:20

6

2

1,852

by: bumpbot

31 Jul 2023, 23:05

ER

In the triangle shown, what is the value x?

Sub 505 (Easy) | Geometry

Sub 505 (Easy) | Geometry hide tags

Bunuel

10 Apr 2018, 06:42

1

5

1,852

by: bumpbot

21 Dec 2023, 08:38

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If a>b>0

Poor Quality

Poor Quality hide tags

rheabiswal

01 Oct 2018, 21:38

1

6

1,851

by: rheabiswal

02 Oct 2018, 07:05

Are m and n are co-prime? 1) m and m-n are co-prime 2) HCF (

705-805 (Hard) | Number Properties

705-805 (Hard) | Number Properties hide tags

TheUltimateWinner

21 Jul 2019, 13:13

1

1,851

by: nick1816

22 Jul 2019, 18:37

ER

What is the area of the 6 rectangles shown in the figure?

705-805 (Hard) | Geometry

705-805 (Hard) | Geometry hide tags

Bunuel

17 Sep 2018, 22:09

4

5

1,851

by: bumpbot

14 Nov 2019, 04:54

ER

When a positive integer n is divided by 2, what is the remainder?

505-555 (Easy) | Number Properties

505-555 (Easy) | Number Properties hide tags

MathRevolution

30 Jan 2017, 02:46

1

2

1,850

by: MathRevolution

01 Feb 2017, 02:29

ER

In the diagram below, a portion of the number line is shown, with numb

605-655 (Medium) | Inequalities

605-655 (Medium) | Inequalities hide tags

Bunuel

30 Jul 2017, 22:50

2

4

1,850

by: buan15

31 Jul 2017, 23:55

ER

If x^3 < x^2, is x > 0 ?

605-655 (Medium) | Absolute Values, Inequalities

605-655 (Medium) | Absolute Values, Inequalities hide tags

AnisMURR

15 Dec 2018, 04:01

6

3

1,850

by: chetan2u

15 Dec 2018, 19:40

ER

Jack’s morning routine includes three activities: taking a shower, dri

555-605 (Medium) | Word Problems

555-605 (Medium) | Word Problems hide tags

Bunuel

13 Feb 2019, 01:09

1

2

1,850

by: CrackverbalGMAT

03 Sep 2020, 23:17

ER

If S is a sequence of consecutive multiples of 3, how many multiples

705-805 (Hard) | Multiples and Factors

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

Bunuel

08 Apr 2021, 09:00

5

3

1,850

by: bumpbot

01 Jun 2025, 07:46

ER

Out of 50 people, there are 35 people with college degrees and 30 fema

505-555 (Easy) | Overlapping Sets

505-555 (Easy) | Overlapping Sets hide tags

MathRevolution

17 Jul 2017, 01:58

2

1,849

by: MathRevolution

19 Jul 2017, 01:57

ER

Given rectangle ABCD, what is the value of angle DEC?

555-605 (Medium) | Geometry

555-605 (Medium) | Geometry hide tags

Bunuel

03 Jul 2018, 10:53

1

2

1,849

by: PKN

03 Jul 2018, 13:43

ER

If a and b are non-negative integers, what is the value of b?

555-605 (Medium) | Absolute Values, Exponents

555-605 (Medium) | Absolute Values, Exponents hide tags

MonkeyDDes

22 Sep 2021, 16:43

3

1

1,849

by: chetan2u

22 Sep 2021, 20:21

ER

If n is an integer, is (n - 1)(n + 1) a multiple of 24?

655-705 (Hard) | Multiples and Factors

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

Bunuel

11 Nov 2023, 06:33

5

4

1,849

by: bumpbot

18 Dec 2024, 07:03

ER

If b is an integer how many values of b satisfy a < b < c?

705-805 (Hard) | Inequalities

705-805 (Hard) | Inequalities hide tags

Bunuel

23 Apr 2018, 01:22

8

5

1,849

by: bumpbot

11 Jan 2026, 00:08

ER

a,b, c are three integers such that a<b<c. Is c greater than

605-655 (Medium) | Number Properties

605-655 (Medium) | Number Properties hide tags

TheUltimateWinner

15 Jul 2019, 10:40

2

1,848

by: CrackverbalGMAT

17 Jul 2019, 04:32

ER

Is x > 0? (1) x^6 > x^8 (2) (x^(1/2) + 1)^(-1) < 1

555-605 (Medium) | Exponents, Inequalities

555-605 (Medium) | Exponents, Inequalities hide tags

GMATBusters

26 Sep 2019, 21:18

4

3

1,848

by: bumpbot

21 Sep 2021, 00:22

ER

If m and n are positive integers, then is p equal to product of m and

555-605 (Medium) | Number Properties

555-605 (Medium) | Number Properties hide tags

vikasp99

07 Mar 2017, 07:06

4

2

1,848

by: bumpbot

18 Oct 2022, 12:12

ER

Joan has two pieces of cloth, one red and one blue. The blue cloth's

605-655 (Medium) | Geometry

605-655 (Medium) | Geometry hide tags

Bunuel

09 Sep 2018, 08:49

4

2

1,848

by: bumpbot

21 Oct 2023, 05:31

ER

If x and z are positive integers, is at least one of them a prime numb

705-805 (Hard) | Algebra, Number Properties

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

Bunuel

01 Oct 2018, 04:53

9

3

1,847

by: harsha3699

01 Oct 2018, 23:28

ER

What is the sum of 5 evenly spaced integers in a set? (1) The median

555-605 (Medium) | Statistics and Sets Problems

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

Bunuel

17 Apr 2023, 01:30

5

2

1,847

by: SaquibHGMATWhiz

17 Apr 2023, 10:19

ER

On a certain week, 1000 visitors chose one of weekdays days from Monda

705-805 (Hard) | Word Problems

705-805 (Hard) | Word Problems hide tags

Bunuel

24 Oct 2018, 00:35

3

1,846

by: bumpbot

22 Feb 2022, 03:24

If x is odd, and x=4+3n

805+ (Hard) | Number Properties

805+ (Hard) | Number Properties hide tags

gmatophobia

23 Sep 2023, 11:32

2

5

1,846

by: mialanknox

24 Sep 2023, 01:58

ER

If m and n are integers, is mn an odd integer?

655-705 (Hard) | Number Properties

655-705 (Hard) | Number Properties hide tags

Bunuel

29 Jun 2023, 06:00

3

1,846

by: bumpbot

06 Dec 2024, 23:34

ER

If the average (arithmetic mean) of 6 numbers is 30, what is the avera

505-555 (Easy) | Statistics and Sets Problems

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

Bunuel

01 Jan 2018, 01:34

1

1,845

by: DavidTutorexamPAL

01 Jan 2018, 02:39

ER

If m and n are positive integers, what is the units digit of 556^17n +

655-705 (Hard) | Exponents, Multiples and Factors

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

Bunuel

23 Dec 2020, 01:15

4

5

1,845

by: rocky620

24 Dec 2020, 06:45

ER

Is nonnegative integer x odd? (1) x! = |x - 1|! (2) x! = (x + 1)!

655-705 (Hard) | Absolute Values, Number Properties

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

Bunuel

03 Jul 2018, 10:48

4

1,845

by: SaquibHGMATWhiz

09 Nov 2022, 10:16

ER

Are all the three angles of triangle ABC less than 90 degrees?

655-705 (Hard) | Geometry

655-705 (Hard) | Geometry hide tags

amanvermagmat

09 Nov 2018, 22:22

10

2

1,845

by: bumpbot

13 Dec 2023, 23:26

ER

If f(n) denotes the remainder of n^2 divided by k, where n and k are

805+ (Hard) | Functions and Custom Characters

805+ (Hard) | Functions and Custom Characters hide tags

Bunuel

15 Jan 2024, 02:30

12

5

1,845

by: bumpbot

26 Dec 2025, 08:48

ER

If A and B are both positive, A is what percent of B?

Sub 505 (Easy) | Percent and Interest Problems

Sub 505 (Easy) | Percent and Interest Problems hide tags

Bunuel

20 Apr 2018, 06:33

1

2

1,844

by: push12345

07 May 2018, 07:34

ER

If the sum of three positive integers even? (1) The sum of the first

555-605 (Medium) | Number Properties

555-605 (Medium) | Number Properties hide tags

Bunuel

26 Sep 2018, 05:30

2

1

1,844

by: DavidTutorexamPAL

26 Sep 2018, 13:45