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

176

15

78,807

by: thisisakr

16 Apr 2026, 11:46

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100 Hardest and easiest questions for DS as of March 2026

1, 2

Bunuel

01 Jan 2026, 05:45

856

24

188,574

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

488,009

by: bb

29 Aug 2025, 13:27

ER

If a 0, is b < a < c ? (1) b < |a| < c (2) |b| < |a| < |c|

555-605 (Medium) | Absolute Values, Inequalities

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

Bunuel

03 Feb 2020, 05:01

5

3

3,884

by: bumpbot

10 Jun 2024, 05:24

ER

Bill took 4 math tests, and each test received a score out of 100. Wha

555-605 (Medium) | Statistics and Sets Problems, Word Problems

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

Bunuel

23 Jul 2018, 03:17

6

8,158

by: bumpbot

10 Jun 2024, 01:04

ER

2x – y =

505-555 (Easy) | Algebra

505-555 (Easy) | Algebra hide tags

vikasp99

06 Mar 2017, 05:08

2

10

3,409

by: bumpbot

09 Jun 2024, 19:35

ER

If a, b, and c are positive distinct integers, is (a/b)/c an

655-705 (Hard) | Number Properties

655-705 (Hard) | Number Properties hide tags

bibha

08 Nov 2012, 03:18

38

6

14,136

by: bumpbot

08 Jun 2024, 23:43

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If n is a positive integer, what is the value of n?

805+ (Hard) | Multiples and Factors

805+ (Hard) | Multiples and Factors hide tags

Bunuel

30 Jul 2017, 22:47

19

7

3,947

by: bumpbot

07 Jun 2024, 04:55

ER

An infinite sequence of positive integers is called a "beta

555-605 (Medium) | Sequences

555-605 (Medium) | Sequences hide tags

manishuol

01 May 2013, 10:08

42

7

10,552

by: bumpbot

07 Jun 2024, 02:29

ER

What is the value of x?

555-605 (Medium) | Geometry

555-605 (Medium) | Geometry hide tags

Bunuel

27 Dec 2015, 10:36

6

5

4,238

by: reed990

06 Jun 2024, 14:29

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n and k are positive integers, and when n is divided by k²

555-605 (Medium) | Remainders

555-605 (Medium) | Remainders hide tags

BrentGMATPrepNow

01 Nov 2016, 11:30

21

6

6,352

by: Bunuel

06 Jun 2024, 00:32

ER

The tax Jim paid on a shipment of Cognac brandy bottles was $1 for the

555-605 (Medium) | Word Problems

555-605 (Medium) | Word Problems hide tags

Bunuel

23 Jun 2021, 04:00

2

4

1,809

by: bumpbot

04 Jun 2024, 11:30

ER

If p, q and r and integers, and pqr/4 is an odd integer, is p an even

705-805 (Hard) | Number Properties

705-805 (Hard) | Number Properties hide tags

ShankSouljaBoi

30 Oct 2020, 21:50

11

5

3,610

by: bumpbot

01 Jun 2024, 04:13

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If m and n are positive integers, and x = 2^m3^m, is m < n ?

705-805 (Hard) | Exponents +2 tags

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

Bunuel

12 Sep 2022, 07:33

12

5

4,115

by: Bunuel

30 May 2024, 00:24

ER

If x and y are integers then, find unit digit of 22^x + 37^y.

Poor Quality

Poor Quality hide tags

GMATinsight

31 Oct 2020, 06:41

6

3

1,486

by: Bunuel

29 May 2024, 08:47

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If cb < ab < 0, is |c - a| = |c| - |a|?

705-805 (Hard) | Absolute Values, Inequalities

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

Bunuel

01 Jul 2019, 08:00

68

12

10,418

by: bumpbot

29 May 2024, 08:43

ER

If a > 0, what is the value of a^(1/2)?

Sub 505 (Easy) | Exponents

Sub 505 (Easy) | Exponents hide tags

Bunuel

21 Mar 2018, 05:02

1

5

2,223

by: bumpbot

29 May 2024, 07:34

ER

What is the highest common factor of three positive integers x, y, and

605-655 (Medium) | Multiples and Factors

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

Bunuel

03 Mar 2020, 02:39

17

3

3,856

by: Bunuel

26 May 2024, 13:08

ER

If x is a positive integer, what is the median of the set of consecuti

555-605 (Medium) | Statistics and Sets Problems

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

Bunuel

04 Apr 2016, 07:19

20

8

8,361

by: bumpbot

26 May 2024, 05:01

ER

A certain economics class consists of 50 women and 30 men. H

Sub 505 (Easy) | Word Problems

Sub 505 (Easy) | Word Problems hide tags

fozzzy

06 Oct 2013, 02:52

13

5

7,185

by: bumpbot

23 May 2024, 08:32

ER

What is the value of n?

Sub 505 (Easy) | Number Properties

Sub 505 (Easy) | Number Properties hide tags

monirjewel

27 Mar 2015, 04:56

20

5

31,993

by: bumpbot

21 May 2024, 08:38

ER

If x is positive, what is the value of y ?

Sub 505 (Easy) | Algebra

Sub 505 (Easy) | Algebra hide tags

adkikani

23 May 2018, 18:40

6

7

10,742

by: bumpbot

21 May 2024, 08:35

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Is x^2 - y^2 even? (1) x + y is odd (2) x - y is odd

705-805 (Hard) | Number Properties

705-805 (Hard) | Number Properties hide tags

Pepe

21 Nov 2010, 10:27

9

5

6,377

by: bumpbot

19 May 2024, 13:10

ER

If x and y are positive integers, what is the remainder when y^x is

555-605 (Medium) | Number Properties, Remainders

555-605 (Medium) | Number Properties, Remainders hide tags

Bunuel

24 Apr 2016, 11:54

11

4

6,300

by: bumpbot

19 May 2024, 04:26

ER

If n is a positive integer, what is the units digit of n?

655-705 (Hard) | Fractions and Ratios, Number Properties

655-705 (Hard) | Fractions and Ratios, Number Properties hide tags

fozzzy

16 Jun 2013, 00:10

60

7

13,135

by: DmitryFarberMPrep

18 May 2024, 22:46

ER

Pat has taken 10 tests for a particular class. If his lowest score was

555-605 (Medium) | Word Problems

555-605 (Medium) | Word Problems hide tags

Bunuel

15 Aug 2019, 01:27

6

4

1,878

by: bumpbot

18 May 2024, 08:14

ER

R is the set of all integers between integers A and B, inclusive. What

705-805 (Hard) | Number Properties

705-805 (Hard) | Number Properties hide tags

Bunuel

17 Jun 2020, 06:33

3

4

1,972

by: Bunuel

16 May 2024, 07:01

ER

The possible arguments of the functions f(x,y) and g(x,y) are x=0 or 1

655-705 (Hard) | Graphs and Illustrations

655-705 (Hard) | Graphs and Illustrations hide tags

Asifpirlo

06 Aug 2013, 15:29

29

8

6,740

by: bumpbot

15 May 2024, 13:24

ER

During a 7-year period the profits of Midas, Inc. changed by

555-605 (Medium) | Percent and Interest Problems

555-605 (Medium) | Percent and Interest Problems hide tags

ankithakhu

28 Mar 2010, 01:57

19

12

7,084

by: bumpbot

13 May 2024, 10:25

ER

Is ab<1? (1) a^2b<a (2) ab^2<b

705-805 (Hard) | Inequalities

705-805 (Hard) | Inequalities hide tags

GMATNinja

18 Apr 2022, 00:26

16

7

6,827

by: bumpbot

13 May 2024, 01:27

ER

Alan and Peter are cycling at different constant rates on a

555-605 (Medium) | Distance and Speed Problems

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

summer101

11 May 2015, 03:34

33

10

10,197

by: bumpbot

13 May 2024, 01:01

ER

How old will Fred be in 3 years?

Sub 505 (Easy) | Word Problems

Sub 505 (Easy) | Word Problems hide tags

BrentGMATPrepNow

26 Jun 2018, 07:34

6

3

3,382

by: bumpbot

12 May 2024, 03:33

ER

The positive integer n is greater than 10. What is the remainder when

655-705 (Hard) | Remainders

655-705 (Hard) | Remainders hide tags

a33jcfve

27 Oct 2015, 19:10

30

9

7,687

by: bumpbot

11 May 2024, 04:52

ER

What is the units digit of x?

605-655 (Medium) | Number Properties

605-655 (Medium) | Number Properties hide tags

Bunuel

27 Apr 2016, 00:15

10

5

3,338

by: bumpbot

10 May 2024, 23:39

ER

Given x = y + z. Is x > y ? (1) y > 0 (2) z > 0

555-605 (Medium) | Inequalities

555-605 (Medium) | Inequalities hide tags

GMATBusters

15 Jun 2018, 10:21

35

6

14,006

by: bumpbot

10 May 2024, 17:56

ER

In the x-y plane, y = f(x) = ax^2+bx+c passes through (1,0) an

805+ (Hard) | Functions and Custom Characters

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

MathRevolution

06 Jul 2018, 01:43

22

4

2,986

by: bumpbot

10 May 2024, 09:16

ER

In the former Soviet Union, rubles came in denominations of

805+ (Hard) | Word Problems

805+ (Hard) | Word Problems hide tags

Vijayeta

27 Jul 2014, 07:50

45

6

7,660

by: bumpbot

10 May 2024, 07:57

ER

If x and y are integers, and (-x)^x = ...

655-705 (Hard) | Exponents

655-705 (Hard) | Exponents hide tags

BrentGMATPrepNow

21 May 2018, 14:58

20

5

4,388

by: bumpbot

09 May 2024, 21:16

ER

How many integers k are there such that x < k < y?

805+ (Hard) | Arithmetic

805+ (Hard) | Arithmetic hide tags

BrentGMATPrepNow

21 Jan 2020, 07:11

29

3

3,743

by: bumpbot

09 May 2024, 04:14

ER

In a group, the ratio of the number of women to the number of children

555-605 (Medium) | Fractions and Ratios

555-605 (Medium) | Fractions and Ratios hide tags

Bunuel

01 Dec 2021, 10:00

10

7

5,079

by: bumpbot

08 May 2024, 03:38

ER

If a and b are positive integers, is a a multiple of b?

605-655 (Medium) | Number Properties

605-655 (Medium) | Number Properties hide tags

energetics

06 Feb 2019, 18:36

18

5

8,680

by: bumpbot

08 May 2024, 03:32

ER

If x is a positive integer, what is the number of different positive

655-705 (Hard) | Multiples and Factors

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

Bunuel

16 Dec 2019, 02:40

21

4

3,726

by: bumpbot

07 May 2024, 03:41

ER

What is the arithmetic mean (simple average) of a sequence of consecut

655-705 (Hard) | Sequences

655-705 (Hard) | Sequences hide tags

Bunuel

17 Oct 2020, 13:08

7

3

2,972

by: bumpbot

06 May 2024, 23:57

ER

In a certain school, teachers who lecture English and Spanish are ther

655-705 (Hard) | Probability

655-705 (Hard) | Probability hide tags

MathRevolution

08 Jun 2016, 17:02

6

4

3,625

by: bumpbot

06 May 2024, 10:59

ER

In the problem below, AB, CD, and EF are two-digit numbers, where A, B

805+ (Hard) | Arithmetic

805+ (Hard) | Arithmetic hide tags

Bunuel

06 Oct 2021, 05:30

11

5

3,868

by: bumpbot

04 May 2024, 12:20

ER

Sets A and B each consist of three terms selected from the 5

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

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

daviesj

26 Dec 2012, 00:33

29

7

9,408

by: bumpbot

30 Apr 2024, 08:08

Q and X are positive integers greater than 1. Is it possible...

805+ (Hard) | Number Properties

805+ (Hard) | Number Properties hide tags

akshayk

29 Mar 2017, 05:50

9

8

3,431

by: bumpbot

30 Apr 2024, 06:09

ER

When a positive integer n is divided by 3, what is the remainder?

505-555 (Easy) | Remainders

505-555 (Easy) | Remainders hide tags

MathRevolution

03 Aug 2018, 02:06

10

3

7,638

by: bumpbot

29 Apr 2024, 22:28

ER

If n is a nonzero integer, is xn < 1?

505-555 (Easy) | Inequalities, Number Properties

505-555 (Easy) | Inequalities, Number Properties hide tags

lastshot

20 Aug 2014, 20:56

25

8

16,030

by: bumpbot

29 Apr 2024, 10:24

ER

Alex spends 30% of his income on his children’s education, 20% on

805+ (Hard) | Percent and Interest Problems, Word Problems

805+ (Hard) | Percent and Interest Problems, Word Problems hide tags

VenoMfTw

03 Aug 2015, 00:45

27

7

7,148

by: bumpbot

28 Apr 2024, 05:27

ER

A cafeteria offers seven types of sandwiches, each with a fixed price

805+ (Hard) | Word Problems

805+ (Hard) | Word Problems hide tags

Bunuel

08 Feb 2017, 01:51

21

6

5,644

by: bumpbot

27 Apr 2024, 11:07

ER

What is the remainder when m is divided by 3? (1) The remainder when m

Sub 505 (Easy) | Remainders

Sub 505 (Easy) | Remainders hide tags

Bunuel

15 Jul 2019, 00:37

5

4

5,296

by: bumpbot

26 Apr 2024, 21:34

ER

If x and z are positive integers, is x^2 - z^2 odd?

505-555 (Easy) | Number Properties

505-555 (Easy) | Number Properties hide tags

Skywalker18

15 Aug 2017, 13:04

11

6

4,351

by: bumpbot

25 Apr 2024, 01:34