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

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16 Apr 2026, 11:46

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100 Hardest and easiest questions for DS as of April 2026

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Bunuel

01 Jan 2026, 05:45

858

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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

488,623

by: bb

29 Aug 2025, 13:27

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If k is a positive constant and y = |x - k| - |x + k|, what

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12bhang

27 Feb 2014, 06:03

65

11

23,213

by: MathRevolution

21 Nov 2015, 10:25

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If 8^0.5y 3^0.75x = 12^n then what is the value of x?? 1) n

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surendar26

20 Dec 2010, 10:14

25

8

8,027

by: brs1cob

27 Sep 2015, 08:52

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If n is a positive integer, and sqrt[(45)(14)(7^n)-(15)(7^(n-1))(54)]

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wimpytots

02 Sep 2015, 19:30

17

10

4,871

by: ENGRTOMBA2018

04 Sep 2015, 04:55

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If ab=1, what is the value of (axb) (ayb) ?

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naaga

31 Dec 2010, 20:58

10

3

14,072

by: bumpbot

04 Sep 2015, 02:22

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A college surveyed 50 students to determine the average

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shobhitb

18 Jun 2006, 06:33

2

12

4,399

by: ENGRTOMBA2018

19 Jul 2015, 07:52

It will rain today. Will it rain tomorrow?

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UMB

15 Jul 2015, 08:00

2

10

45,721

by: georgesanjay

15 Jul 2015, 07:48

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Is the two-digit prime number p equal to 17?

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BN1989

12 Jun 2013, 03:25

8

2

4,853

by: bumpbot

02 Jul 2015, 06:37

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A charity planned to distribute 'n' pens (n<300) to students

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alphonsa

02 Aug 2014, 01:31

2

2,181

by: IanStewart

23 Jun 2015, 13:32

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What is the units digit of integer s? (1) The units digit of

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dreambeliever

07 Jun 2011, 08:05

4

18

3,957

by: Harley1980

19 Jun 2015, 12:33

A set S contains five numbers k, k + 1, 2k - 1, 5k + 7 and 6k + 8. If

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itzmyzone911

03 May 2015, 22:42

3

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3,410

by: teplyam

18 Jun 2015, 23:57

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If r and s are non-negative, what is the ratio of r to s?

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anulfc

14 Jun 2015, 15:40

4

10

4,927

by: IanStewart

16 Jun 2015, 14:54

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How much water should the milkman add to milk purchased

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monikaleoster

03 Nov 2012, 08:46

33

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10,544

by: KarishmaB

13 May 2015, 23:01

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Each resident of Ranchville either likes or dislikes Wrestling and eac

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shohrat6383

24 Apr 2015, 08:42

2

6

1,809

by: aimtoteach

27 Apr 2015, 21:04

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In Greenville last July, what was the average (arithmetic

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rohitgarg

14 May 2017, 01:34

5

11

12,959

by: ash99

22 Apr 2015, 11:32

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A ladder of fixed length is stacked against a wall. The wall is perpen

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mahiGMAT

25 Mar 2015, 03:08

3

7

3,235

by: SherLocked2018

30 Mar 2015, 02:33

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In the figure above, ST=3. What is the length of RS?

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Awli

26 Feb 2015, 11:24

6

4

2,816

by: KarishmaB

23 Mar 2015, 22:25

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What is the ratio of y to x?

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SirGMAT

02 Dec 2014, 08:21

15

6

7,095

by: Bunuel

02 Dec 2014, 08:21

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If the square root of t is a real number, is the square root

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Rock750

09 Apr 2013, 16:32

3

3,533

by: Maxirosario2012

29 Nov 2014, 17:16

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A certain sum was invested in a high-interest bond for which

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punyadeep

16 Mar 2011, 07:49

31

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14,924

by: bumpbot

19 Nov 2014, 11:32

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Is x^2+y^2 divisible by 5?

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ctrlaltdel

14 Nov 2009, 18:56

35

13

15,984

by: deeuk

10 Nov 2014, 01:27

A regular hexagon is inscribed in a circle. What is the area

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smartyman

02 Jul 2014, 01:03

2

5,124

by: dmmk

04 Nov 2014, 08:34

The volume of cylinder A is how much more than the volume of cylinder

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DangerPenguin

29 Sep 2014, 07:37

1

8

4,107

by: DangerPenguin

29 Sep 2014, 07:37

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S is an infinite sequence, in which the value of a

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gmatprep2011

23 Sep 2011, 23:23

18

9

5,841

by: Bunuel

21 Sep 2014, 11:41

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What is the value of x^6 + x^(-6) ?

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alphonsa

18 Aug 2014, 09:21

3

2

2,590

by: Bunuel

18 Aug 2014, 09:31

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Is the probability of an element in Set B also being an elem

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tabsang

28 Dec 2012, 07:18

6

4

3,095

by: Bunuel

17 Jul 2014, 08:58

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Is x^3 greater than x

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krishna789

11 Jun 2014, 21:30

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4,089

by: krishna789

12 Jun 2014, 00:38

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There are two boxes of markers.The first box has only red

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Manik12345

07 Jun 2014, 01:28

2

7

7,816

by: Manik12345

09 Jun 2014, 01:21

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A certain 13m ladder is resting against a wall of height X

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rathoreaditya81

05 Dec 2009, 11:51

4

16

4,836

by: kundankshrivastava

19 May 2014, 23:42

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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

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by: Bunuel

01 Apr 2014, 08:21

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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

5,217

by: stne

13 Feb 2014, 07:15

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What is the value of x ?

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cssk

05 Jan 2014, 10:35

3

2,814

by: cssk

05 Jan 2014, 10:55

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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

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7,810

by: Amateur

30 Dec 2013, 15:21

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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

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6,189

by: jlgdr

27 Dec 2013, 10:09

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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

6,563

by: Bunuel

30 Oct 2013, 07:59

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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

4,916

by: fmomen01

22 Oct 2013, 07:14

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

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jeeteshsingh

15 Oct 2013, 09:04

6

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by: Bunuel

15 Oct 2013, 09:14

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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

3,733

by: jlgdr

12 Oct 2013, 10:32

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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

3,412

by: Bunuel

29 Aug 2013, 04:52

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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

3,627

by: fameatop

22 Aug 2013, 03:10

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

3,229

by: zerosleep

19 Aug 2013, 07:21

The average weight of the students

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Gian

10 Aug 2013, 05:55

1

3

4,575

by: maaadhu

10 Aug 2013, 06:09

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

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Asifpirlo

05 Aug 2013, 11:35

1

3

3,075

by: Asifpirlo

05 Aug 2013, 11:34

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

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karthiksms

28 May 2012, 11:54

5

6

5,440

by: WholeLottaLove

01 Aug 2013, 15:12

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

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innocous

25 Jul 2013, 07:25

4

2,329

by: Observer

25 Jul 2013, 12:40

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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

2,292

by: Bunuel

26 Jun 2013, 20:31

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

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atalpanditgmat

18 Jun 2013, 22:16

4

3

7,801

by: mattce

20 Jun 2013, 09:03

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What is the value of a+b ?

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summer101

02 Jun 2013, 05:07

2

2,054

by: Bunuel

02 Jun 2013, 10:45

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A home owner must pick between paint A, which costs $6.00

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gmac25

17 Aug 2009, 15:08

7

8

9,147

by: Bunuel

12 May 2013, 02:50

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What is the units digit of a^18?

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apoorvarora

09 Dec 2012, 07:56

6

14

4,295

by: walker

11 May 2013, 08:19

An IT Department employs 8 people at an average salary of $8

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SpencerH

24 Apr 2013, 21:05

4

3

3,224

by: doe007

24 Apr 2013, 22:33