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

175

15

78,535

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

854

24

188,419

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

487,764

by: bb

29 Aug 2025, 13:27

ER

What is the average (arithmetic mean) of 3x and 15z? (1) x + 5z = 20

505-555 (Easy) | Algebra

505-555 (Easy) | Algebra hide tags

unraveled

13 Apr 2020, 01:01

5

6

3,090

by: bumpbot

27 Jul 2021, 23:43

ER

What is the numerical value of x^2 25? (1) x 5 = 3 (2) 4 x = 5

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unebaguette

16 Jun 2019, 21:10

1

2,807

by: Bunuel

16 Jun 2019, 21:16

ER

Is the average (arithmetic mean) of the seven numbers negative?

Sub 505 (Easy) | Statistics and Sets Problems

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

UncleFrodo

17 Jul 2018, 12:14

25

4

19,304

by: raka99

04 Jul 2023, 22:19

It will rain today. Will it rain tomorrow?

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UMB

15 Jul 2015, 08:00

2

10

45,623

by: georgesanjay

15 Jul 2015, 07:48

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If x is an integer, what is the value of x? (1) |x - |x^2|| = 2

705-805 (Hard) | Absolute Values

705-805 (Hard) | Absolute Values hide tags

umangshah

25 Oct 2023, 23:54

4

1

1,391

by: chetan2u

25 Oct 2023, 22:50

Harry, a farmer, decided to divide all his possessions among his...

605-655 (Medium) | Word Problems

605-655 (Medium) | Word Problems hide tags

Ujjwalk31

14 Feb 2026, 05:32

2

1

379

by: Edskore

14 Feb 2026, 06:04

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Beth's bank charges a service fee on a regular checking account for ea

505-555 (Easy) | Word Problems

505-555 (Easy) | Word Problems hide tags

ugimba

26 Jan 2010, 14:18

77

17

29,521

by: bumpbot

10 Jan 2026, 20:21

ER

If y>=0, What is the value of x? (1) |x-3|>=y (2) |x-3|<=-y

705-805 (Hard) | Absolute Values, Inequalities

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

ugimba

09 Jan 2010, 14:17

301

15

45,449

by: manan01

19 Nov 2025, 10:05

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

359

20

75,342

by: bumpbot

12 Jun 2025, 01:14

ER

PQ and RS are two chords of a circle and the lines RP and SQ

705-805 (Hard) | Geometry

705-805 (Hard) | Geometry hide tags

udso

28 Oct 2013, 15:48

25

7

21,064

by: bumpbot

07 Dec 2022, 01:41

ER

A list contains n distinct integers. Are all n integers cons

805+ (Hard) | Statistics and Sets Problems

805+ (Hard) | Statistics and Sets Problems hide tags

1, 2

UdaySJha

11 Jan 2014, 04:46

156

32

30,101

by: bumpbot

25 Oct 2025, 22:01

ER

In a survey of 200 college graduates, 30 percent said they

505-555 (Easy) | Overlapping Sets

505-555 (Easy) | Overlapping Sets hide tags

udaymathapati

26 Sep 2010, 11:47

159

15

51,308

by: totaltestprepNick

03 Mar 2026, 13:02

ER

The results of a certain experiment included 6 data values

505-555 (Easy) | Statistics and Sets Problems

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udaymathapati

23 Jun 2010, 12:30

23

5

15,784

by: bumpbot

02 Mar 2026, 04:37

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If x and y are positive integers, is x an even integer?

655-705 (Hard) | Number Properties

655-705 (Hard) | Number Properties hide tags

udaymathapati

08 Mar 2011, 13:18

54

6

14,110

by: bumpbot

28 Dec 2025, 04:06

ER

Joanna bought only $0.15 stamps and $0.29 stamps. How many $0.15 stamp

655-705 (Hard) | Arithmetic, Word Problems

655-705 (Hard) | Arithmetic, Word Problems hide tags

1, 2

udaymathapati

26 Sep 2010, 11:48

906

26

97,433

by: bumpbot

19 Dec 2025, 02:52

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

23,450

by: bumpbot

11 Dec 2025, 13:52

ER

Each person attending a fund-raising party for a certain club was

555-605 (Medium) | Word Problems

555-605 (Medium) | Word Problems hide tags

udaymathapati

02 Nov 2022, 10:30

123

9

38,549

by: bumpbot

06 Dec 2025, 18:50

ER

In the decimal representation of x, where 0 < x < 1, is the

705-805 (Hard) | Fractions and Ratios, Number Properties

705-805 (Hard) | Fractions and Ratios, Number Properties hide tags

udaymathapati

17 Aug 2010, 06:37

434

15

36,830

by: bumpbot

02 Nov 2025, 09:09

ER

In what ratio should Solution 1 and Solution 2 be mixed to

555-605 (Medium) | Mixture Problems

555-605 (Medium) | Mixture Problems hide tags

udaymathapati

31 Oct 2010, 05:20

63

11

17,008

by: bumpbot

05 Oct 2025, 10:38

ER

If line k in the xy-plane has equation y = mx + b, where m and b are

605-655 (Medium) | Coordinate Plane

605-655 (Medium) | Coordinate Plane hide tags

udaymathapati

02 Sep 2010, 12:52

172

9

40,212

by: bumpbot

13 Aug 2025, 11:18

ER

If r, s, and w are positive numbers such that w = 60r + 80s

605-655 (Medium) | Inequalities

605-655 (Medium) | Inequalities hide tags

udaymathapati

12 Sep 2010, 07:25

44

6

18,839

by: agrasan

16 Jul 2025, 22:31

ER

Seven different numbers are selected from the integers 1 to

605-655 (Medium) | Remainders

605-655 (Medium) | Remainders hide tags

udaymathapati

28 Aug 2010, 02:58

189

17

30,066

by: rak08

28 May 2025, 02:37

ER

If x and y are positive, is x^3 > y? (1) x^(1/2) > y (2) x > y

655-705 (Hard) | Exponents +2 tags

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udaymathapati

25 Jan 2022, 05:38

62

10

17,563

by: bumpbot

21 May 2025, 11:36

ER

If the symbol # represents either addition, subtraction

Sub 505 (Easy) | Arithmetic, Functions and Custom Characters

Sub 505 (Easy) | Arithmetic, Functions and Custom Characters hide tags

udaymathapati

26 Sep 2010, 11:46

19

7

18,822

by: bumpbot

20 Mar 2025, 01:57

ER

What is the tens digit of the positive integer r?

555-605 (Medium) | Fractions and Ratios

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

udaymathapati

08 Apr 2012, 03:18

401

19

73,396

by: bumpbot

08 Feb 2025, 13:30

ER

If x and y are positive, is 4x > 3y?

655-705 (Hard) | Inequalities

655-705 (Hard) | Inequalities hide tags

udaymathapati

26 Aug 2010, 10:07

68

15

19,452

by: bumpbot

11 Aug 2024, 00:32

If n and k are positive integers, is n/k an even integer?

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

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

udaymathapati

02 Sep 2010, 12:46

25

5

16,938

by: bumpbot

17 Mar 2024, 02:28

ER

What is SD of given set of numbers whose average is 5?

555-605 (Medium) | Statistics and Sets Problems

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

udaymathapati

29 Mar 2017, 05:21

19

5

9,072

by: bumpbot

11 Jan 2024, 00:27

ER

If b, c, and d are constants and x^2 + bx + c = (x + d)^2

655-705 (Hard) | Algebra

655-705 (Hard) | Algebra hide tags

udaymathapati

23 Aug 2010, 08:51

80

13

21,070

by: bumpbot

31 Aug 2023, 01:42

ER

Is point A closer to point (1,2) than to point (2,1) ?

655-705 (Hard) | Coordinate Plane

655-705 (Hard) | Coordinate Plane hide tags

udaymathapati

02 Mar 2011, 06:10

24

6

8,609

by: bumpbot

28 Aug 2023, 13:37

ER

If each of the students in a certain mathematics class is

505-555 (Easy) | Probability

505-555 (Easy) | Probability hide tags

udaymathapati

23 Aug 2010, 08:54

17

4

15,182

by: bumpbot

15 Apr 2023, 21:01

ER

If a, b, k, and m are positive integers, is a^k factor of

555-605 (Medium) | Exponents, Multiples and Factors

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

udaymathapati

23 Aug 2010, 08:52

14

4

5,591

by: bumpbot

25 Aug 2022, 21:32

ER

Is x > k? (1) 2^x * 2^k = 4 (2) 9^x * 3^k = 81

555-605 (Medium) | Algebra, Exponents

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

udaymathapati

09 Dec 2010, 09:51

31

9

14,497

by: bumpbot

12 Aug 2022, 07:48

ER

What is the remainder when the positive integer n is divided

555-605 (Medium) | Remainders

555-605 (Medium) | Remainders hide tags

udaymathapati

26 Sep 2010, 11:44

14

6

8,967

by: bumpbot

18 Jan 2022, 03:28

ER

Mr Tolstoy bought 100 CDs at $x and sold them at $y. Did Mr

555-605 (Medium) | Percent and Interest Problems

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

udaymathapati

31 Oct 2010, 06:19

2

6

4,028

by: bumpbot

03 Sep 2019, 03:35

ER

What is the remainder when the positive integer X is divided by 12?

555-605 (Medium) | Remainders

555-605 (Medium) | Remainders hide tags

uday1409

17 Dec 2014, 06:34

10

6

6,339

by: bumpbot

18 Apr 2024, 08:06

ER

p is a natural number, is (8p+1) prime

805+ (Hard) | Number Properties

805+ (Hard) | Number Properties hide tags

uchihaitachi

30 Dec 2019, 07:10

8

5

3,779

by: bumpbot

14 Jul 2024, 06:51

Determine the price of two type A footballs if the total cost of a typ

505-555 (Easy) | Word Problems

505-555 (Easy) | Word Problems hide tags

UB001

15 Jan 2019, 08:24

4

2

5,315

by: bumpbot

30 Dec 2024, 06:57

ER

What is the value of the positive number, p?

505-555 (Easy) | Multiples and Factors

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

UB001

15 Jan 2019, 08:19

10

2

8,275

by: bumpbot

31 Oct 2023, 07:00

How many prime numbers are there between the integers 7 and X, not-inc

555-605 (Medium) | Number Properties

555-605 (Medium) | Number Properties hide tags

UB001

08 Jan 2019, 10:10

4

2

2,020

by: bumpbot

24 Sep 2023, 08:24

Determine the volume of a cuboids.

Sub 505 (Easy) | Geometry

Sub 505 (Easy) | Geometry hide tags

UB001

15 Jan 2019, 08:18

4

2

2,987

by: bumpbot

18 Jun 2020, 20:38

ER

Find the value of r if 4r + 2t = 14.

Sub 505 (Easy) | Algebra

Sub 505 (Easy) | Algebra hide tags

UB001

15 Jan 2019, 09:57

3

2

5,016

by: MathRevolution

31 Mar 2020, 18:54

ER

Find the mean of the data.

Sub 505 (Easy) | Statistics and Sets Problems

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

UB001

15 Jan 2019, 08:21

3

3,247

by: ksrutisagar

15 Jan 2019, 22:53

If r*s≠0, then what is the value of r/s + s/r? (1) r*s=8 (2) r/s=2

555-605 (Medium) | Algebra

555-605 (Medium) | Algebra hide tags

UB001

07 Jan 2019, 02:05

2

4,648

by: KanishkM

06 Jan 2019, 22:40

ER

The area of the right triangle ABC is 4 times greater than

655-705 (Hard) | Geometry

655-705 (Hard) | Geometry hide tags

TXTDryFly

12 Jul 2013, 02:23

69

6

21,451

by: subhashghosh

04 May 2011, 03:50

ER

The equation of line k is y = mx + b, where m and b are some constants

805+ (Hard) | Coordinate Plane

805+ (Hard) | Coordinate Plane hide tags

TwoThrones

29 Apr 2014, 12:21

56

16

12,502

by: bumpbot

29 Sep 2022, 00:04

What is the value of the integer P?

605-655 (Medium) | Number Properties

605-655 (Medium) | Number Properties hide tags

twoface07

13 Aug 2022, 22:48

4

3

2,687

by: bumpbot

24 Jul 2025, 04:23

ER

In the figure to the right, if point C is the center of the

655-705 (Hard) | Geometry

655-705 (Hard) | Geometry hide tags

tweakxc03

17 Sep 2009, 08:23

60

9

29,327

by: jack_tay

28 Dec 2023, 01:27

ER

If x and y are both prime, is xy = 323?

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

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

tusharGupta1

23 Apr 2014, 08:36

68

10

17,200

by: bumpbot

04 Dec 2025, 14:41

ER

Are at least 10% of the employees at ABC Corporation who are

655-705 (Hard) | Statistics and Sets Problems

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

tusharGupta1

06 Dec 2013, 09:16

6

6,154

by: bumpbot

16 Dec 2021, 12:52