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

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78,526

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16 Apr 2026, 11:46

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100 Hardest and easiest questions for DS as of March 2026

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Bunuel

01 Jan 2026, 05:45

854

24

188,411

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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

487,753

by: bb

29 Aug 2025, 13:27

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Is square root of a positive integer x an integer?

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

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

summer101

03 Jun 2013, 07:14

37

2

9,765

by: Bunuel

05 Jun 2013, 03:07

A runner starts running on a circular path of radius 'r'

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atalpanditgmat

18 Jun 2013, 22:16

4

3

7,781

by: mattce

20 Jun 2013, 09:03

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Five people - Adam, Bob, Craig, Daniel and Evan - are of dif

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Carcass

26 Jun 2013, 18:26

2

2,275

by: Bunuel

26 Jun 2013, 20:31

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Three machines, K, M, and P, working simultaneously and

Sub 505 (Easy) | Work and Rate Problems

Sub 505 (Easy) | Work and Rate Problems hide tags

rajman41

01 Jun 2012, 21:01

10

3

6,132

by: Bunuel

01 Jul 2013, 00:03

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What is the value of (x - y)^4?

555-605 (Medium) | Algebra

555-605 (Medium) | Algebra hide tags

eresh

03 Jul 2013, 00:34

2

8

6,098

by: Bunuel

03 Jul 2013, 00:37

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George scored 85 on an exam. Did George do better than 90

555-605 (Medium) | Statistics and Sets Problems

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

josemnz83

07 Jul 2013, 08:57

5

8

4,888

by: Bunuel

17 Jul 2013, 05:47

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If x is an integer, is x/2 an even integer ?

505-555 (Easy) | Number Properties

505-555 (Easy) | Number Properties hide tags

hb

01 Jan 2016, 06:54

10

2

12,903

by: hb

21 Jul 2013, 07:26

A non empty set S has less than four elements. How many

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innocous

25 Jul 2013, 07:25

4

2,323

by: Observer

25 Jul 2013, 12:40

A car is travelling in a constant speed to cover a distance

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karthiksms

28 May 2012, 11:54

5

6

5,412

by: WholeLottaLove

01 Aug 2013, 15:12

Jenifer, David and Steve are children of Mrs. Noris.

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Asifpirlo

05 Aug 2013, 11:35

1

3

3,057

by: Asifpirlo

05 Aug 2013, 11:34

The average weight of the students

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Gian

10 Aug 2013, 05:55

1

3

4,566

by: maaadhu

10 Aug 2013, 06:09

A pencil costs $3 and a pen costs $7. If pens and pencils

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innocous

16 Aug 2013, 08:36

3

2

3,214

by: zerosleep

19 Aug 2013, 07:21

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A CEO is building an extra-wide garage in which to park his

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Asifpirlo

21 Aug 2013, 17:56

2

3,611

by: fameatop

22 Aug 2013, 03:10

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The figure above shows the shape of a brick patio. If arc AB

Sub 505 (Easy) | Geometry

Sub 505 (Easy) | Geometry hide tags

Asifpirlo

22 Aug 2013, 02:28

3

3,132

by: fameatop

22 Aug 2013, 03:16

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In the sequence of non-zero numbers t1, t2,t3,......tn,.....

555-605 (Medium) | Sequences

555-605 (Medium) | Sequences hide tags

riks200

12 Jul 2008, 22:34

14

4

8,306

by: Bunuel

23 Aug 2013, 03:25

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A basic savings account pays interest once per year on Decem

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sehosayho

28 Aug 2013, 01:36

3

3,387

by: Bunuel

29 Aug 2013, 04:52

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If x and y are both integers, which is larger, x^x or y^y?

655-705 (Hard) | Exponents, Inequalities

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

AnkitK

23 Jul 2011, 02:25

4

7

4,980

by: Bunuel

08 Sep 2013, 06:04

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p and q are different two-digit prime numbers with the same

705-805 (Hard) | Number Properties

705-805 (Hard) | Number Properties hide tags

cvsmech

28 Sep 2011, 14:06

41

9

33,876

by: Bunuel

08 Sep 2013, 07:00

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If x > 1, what is the value of integer x?

655-705 (Hard) | Number Properties

655-705 (Hard) | Number Properties hide tags

l0rrie

18 Mar 2011, 14:07

20

12

7,331

by: Bunuel

20 Sep 2013, 00:34

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What is the value of (x + y)^4 ?

555-605 (Medium) | Algebra, Number Properties

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

GMAT TIGER

17 Oct 2009, 23:27

2

8

4,200

by: Bunuel

11 Oct 2013, 04:28

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If a and b are positive, is (a^(-1) + b^(-1))^(-1) less than

655-705 (Hard) | Exponents, Inequalities

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

barakhaiev

11 Oct 2013, 06:44

4

3

4,177

by: Bunuel

11 Oct 2013, 06:46

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While on a summer vacation in Hawaii, Carla goes for an ocea

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Smita04

10 Jul 2012, 20:16

4

3,716

by: jlgdr

12 Oct 2013, 10:32

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Quadrilateral ABCD is a rhombus and points C, D, and E are

705-805 (Hard) | Geometry

705-805 (Hard) | Geometry hide tags

vscid

13 Oct 2013, 16:03

18

3

5,037

by: Bunuel

13 Oct 2013, 16:05

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If p/q > 5, is q < 2?

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jeeteshsingh

15 Oct 2013, 09:04

6

31,161

by: Bunuel

15 Oct 2013, 09:14

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By what percent is the time taken by 12 men to complete a pa

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tabsang

28 Dec 2012, 05:49

10

6

4,896

by: fmomen01

22 Oct 2013, 07:14

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Let denote a mathematical operation. Is it true that x y

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conty911

25 Apr 2012, 22:35

4

3

6,548

by: Bunuel

30 Oct 2013, 07:59

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Is xy > 7 ? (1) x + y = 7 (2) 1 x 3 and 2 y 4

505-555 (Easy) | Inequalities

505-555 (Easy) | Inequalities hide tags

avohden

02 Nov 2013, 00:40

3

2

3,661

by: avohden

05 Nov 2013, 22:42

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Is rst = 1?

555-605 (Medium) | Algebra

555-605 (Medium) | Algebra hide tags

sudhagar

07 Nov 2013, 02:08

15

6

19,804

by: Bunuel

07 Nov 2013, 02:10

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If a and b are consecutive positive integers, and ab = 30x ,

705-805 (Hard) | Multiples and Factors

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

4test1

09 Nov 2009, 22:04

73

12

22,287

by: AccipiterQ

19 Nov 2013, 09:00

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Is the integer z divisible by 6?

605-655 (Medium) | Multiples and Factors

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

restore

08 Aug 2011, 11:16

5

8

6,417

by: Bunuel

29 Nov 2013, 02:29

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What is the value of b ?

505-555 (Easy) | Algebra

505-555 (Easy) | Algebra hide tags

avohden

22 Oct 2013, 22:00

5

3,059

by: Bunuel

01 Dec 2013, 07:21

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In a sequence of terms in which each term is three times the

505-555 (Easy) | Sequences

505-555 (Easy) | Sequences hide tags

hogann

18 Dec 2013, 10:20

2

5,203

by: Bunuel

18 Dec 2013, 10:21

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Is the number of seconds required to travel d1 feet at r1

605-655 (Medium) | Distance and Speed Problems

605-655 (Medium) | Distance and Speed Problems hide tags

gluon

23 Dec 2013, 00:08

16

7

8,760

by: Bunuel

23 Dec 2013, 00:09

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The third-place finisher of the Allen County hot dog eating

605-655 (Medium) | Work and Rate Problems

605-655 (Medium) | Work and Rate Problems hide tags

rao

29 Jul 2013, 08:33

30

5

19,512

by: Bunuel

26 Dec 2013, 08:29

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If x and y are both integers, which is larger, x^x or y^y?

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Apex231

18 Feb 2012, 09:33

7

6,171

by: jlgdr

27 Dec 2013, 10:09

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If A, B & C can build a wall in 4 hours,working together,

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innocous

02 Sep 2013, 12:39

17

11

7,784

by: Amateur

30 Dec 2013, 15:21

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What is the value of x ?

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cssk

05 Jan 2014, 10:35

3

2,796

by: cssk

05 Jan 2014, 10:55

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If nCr gives a prime value,is r=n-1?

705-805 (Hard) | Number Properties

705-805 (Hard) | Number Properties hide tags

mau5

14 May 2013, 03:30

5

3

2,762

by: jlgdr

07 Jan 2014, 09:29

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Each member of a pack of 55 wolves has either brown or blue

805+ (Hard) | Overlapping Sets

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GMATT73

25 Mar 2006, 22:17

46

10

15,890

by: Bunuel

31 Jan 2014, 08:11

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Is x divisible by 30?

805+ (Hard) | Multiples and Factors

805+ (Hard) | Multiples and Factors hide tags

terp26

13 Mar 2008, 08:57

26

3

4,973

by: Bunuel

07 Feb 2014, 05:09

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Is n^2 + 2n an integer? (1) n^3 + 3n is an integer. (2) 2n

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conty911

26 Apr 2012, 03:05

4

19

5,201

by: stne

13 Feb 2014, 07:15

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If rs#0, is 1/r + 1/s = 4 ?

505-555 (Easy) | Algebra

505-555 (Easy) | Algebra hide tags

ggarr

23 Feb 2014, 02:29

2

13

9,282

by: Bunuel

23 Feb 2014, 02:32

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What is my age (expressed as a positive integer)? Although

805+ (Hard) | Number Properties

805+ (Hard) | Number Properties hide tags

EvaJager

10 Oct 2012, 12:25

4

12

3,846

by: thefibonacci

26 Feb 2014, 14:15

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At a certain restaurant, burgers, fries, and soft drinks are

705-805 (Hard) | Word Problems

705-805 (Hard) | Word Problems hide tags

gmatpapa

28 May 2013, 05:45

4

6

4,102

by: jlgdr

27 Feb 2014, 09:29

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In a group of 80 college students, how many own a car?

805+ (Hard) | Overlapping Sets

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gmatprep2011

29 Mar 2014, 11:48

21

9

13,329

by: Bunuel

29 Mar 2014, 11:48

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In the xy-plane is the slope of line k equal to 0?

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fozzzy

18 Jun 2013, 01:37

70

8

29,621

by: Bunuel

01 Apr 2014, 08:21

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Two racecar drivers, Abernathy and Berdoff, are driving

Sub 505 (Easy) | Distance and Speed Problems

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asiriel

20 Jun 2013, 04:00

17

7

12,692

by: NoHalfMeasures

14 Apr 2014, 06:53

ER

Is the positive integer p the sum of the positive prime

655-705 (Hard) | Number Properties

655-705 (Hard) | Number Properties hide tags

wininblue

21 Aug 2010, 04:24

2

6

4,869

by: Bunuel

16 Apr 2014, 07:32

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Peter, Paul, and Mary each received a passing score on

555-605 (Medium) | Statistics and Sets Problems

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

chineseburned

29 May 2008, 20:35

26

7

17,484

by: Bunuel

19 Apr 2014, 03:29

ER

Do the diagonals of a quadrilateral ABCD bisect each other

655-705 (Hard) | Geometry

655-705 (Hard) | Geometry hide tags

mydreammba

28 Apr 2012, 06:51

8

13

9,257

by: qlx

30 Apr 2014, 09:19