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

79,896

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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

858

24

189,018

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

488,735

by: bb

29 Aug 2025, 13:27

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If a and b are positive integers, is 2(a+b)^1/2 > 4b^1/2

605-655 (Medium) | Inequalities

605-655 (Medium) | Inequalities hide tags

Bunuel

28 Oct 2015, 06:56

2

3

2,193

by: AkshdeepS

28 Oct 2015, 21:50

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What is the value of x?

Sub 505 (Easy) | Algebra

Sub 505 (Easy) | Algebra hide tags

Bunuel

28 Oct 2015, 07:12

2

4

1,952

by: Skywalker18

28 Oct 2015, 18:54

ER

Is a - b >= 3 ?

505-555 (Easy) | Inequalities

505-555 (Easy) | Inequalities hide tags

Bunuel

28 Oct 2015, 06:58

1

4

2,594

by: GMATinsight

28 Oct 2015, 09:31

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Is xyz = 1? (1) x(y^z) = 1 (2) 5z = 0

505-555 (Easy) | Algebra

505-555 (Easy) | Algebra hide tags

Asmn

28 Aug 2023, 13:23

2

4,387

by: bumpbot

24 Oct 2015, 07:50

ER

Alison, the company CEO, wants to schedule a one-hour meeting on Monda

Sub 505 (Easy) | Word Problems

Sub 505 (Easy) | Word Problems hide tags

Bunuel

12 Jan 2015, 11:01

2

5

2,358

by: rakshithbabu

23 Oct 2015, 06:28

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If a and b are integers, is a + 8b even?

555-605 (Medium) | Number Properties

555-605 (Medium) | Number Properties hide tags

Bunuel

12 Oct 2015, 22:31

8

3,296

by: IcyTropic

14 Oct 2015, 15:43

ER

A worker’s account activities consist of three types of

655-705 (Hard) | Algebra, Word Problems

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

gmatbull

01 Nov 2012, 09:15

5

10

3,986

by: MathRevolution

12 Oct 2015, 11:13

ER

What is the value of |x| ?

555-605 (Medium) | Absolute Values

555-605 (Medium) | Absolute Values hide tags

MINDPOWER

11 Oct 2015, 13:16

3

3,097

by: thembaseeker

11 Oct 2015, 21:45

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If a/3 = 4/b , is a less than b?

505-555 (Easy) | Inequalities

505-555 (Easy) | Inequalities hide tags

Bunuel

06 Oct 2015, 05:56

2

8

4,432

by: asethi

11 Oct 2015, 08:16

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Is xy < 8? (1) x < 2 and y < 4 (2) 0 < x < 1/2 and y^2 < 225

555-605 (Medium) | Inequalities

555-605 (Medium) | Inequalities hide tags

Bunuel

06 Oct 2015, 06:03

5

6

6,001

by: Bunuel

11 Oct 2015, 06:51

ER

Is x a positive number?

505-555 (Easy) | Inequalities

505-555 (Easy) | Inequalities hide tags

Bunuel

01 Oct 2015, 01:40

3

5

7,638

by: Bunuel

06 Oct 2015, 08:19

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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

8,031

by: brs1cob

27 Sep 2015, 08:52

ER

The perimeter of square ABCD is half of the perimeter of parallelogram

555-605 (Medium) | Geometry

555-605 (Medium) | Geometry hide tags

Bunuel

07 Sep 2015, 23:00

1

5

3,732

by: MathRevolution

15 Sep 2015, 09:29

ER

Which inequality below most accurately represents the range of possibl

505-555 (Easy) | Inequalities

505-555 (Easy) | Inequalities hide tags

Bunuel

24 Aug 2015, 23:37

2

7

2,765

by: etdenlinger

15 Sep 2015, 04:20

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What is the value of x? (1) 3x + 15y = 35 (2) 70 − 6x = 30y

Sub 505 (Easy) | Algebra

Sub 505 (Easy) | Algebra hide tags

Bunuel

09 Sep 2015, 00:48

5

7

3,686

by: Bunuel

14 Sep 2015, 06:55

ER

Is x>1? (1) x is positive (2) x^2 is less than x

505-555 (Easy) | Inequalities

505-555 (Easy) | Inequalities hide tags

shasadou

12 Sep 2015, 12:40

1

2

2,798

by: Bunuel

13 Sep 2015, 03:37

ER

A sequence of terms a1, a2 ,a3, ..., a(m-1), am, is given by

555-605 (Medium) | Sequences

555-605 (Medium) | Sequences hide tags

guerrero25

15 Dec 2020, 23:48

40

10

9,440

by: bumpbot

10 Sep 2015, 01:22

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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

4,874

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

14,075

by: bumpbot

04 Sep 2015, 02:22

ER

How many prime numbers are less than integer k ?

555-605 (Medium) | Number Properties

555-605 (Medium) | Number Properties hide tags

AbdurRakib

28 Aug 2015, 12:43

3

4

3,104

by: Bunuel

30 Aug 2015, 00:49

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Is x odd? (1) x is a multiple of 3. (2) x is a multiple of 5.

505-555 (Easy) | Number Properties

505-555 (Easy) | Number Properties hide tags

Bunuel

27 Aug 2015, 01:20

4

2,284

by: TheKingInTheNorth

28 Aug 2015, 07:13

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If r + s = 4, is s < 0? (1) -4 > -r (2) r > 2s + 2

555-605 (Medium) | Inequalities

555-605 (Medium) | Inequalities hide tags

Bunuel

28 Jul 2015, 01:43

6

4,931

by: Bunuel

17 Aug 2015, 09:33

ER

Is xy = -1 ?

555-605 (Medium) | Algebra

555-605 (Medium) | Algebra hide tags

sugu86

27 May 2014, 00:54

4

7

4,628

by: bumpbot

08 Aug 2015, 10:37

ER

A report consisting of 2,600 words is divided into 23

555-605 (Medium) | Word Problems

555-605 (Medium) | Word Problems hide tags

haas_mba07

06 Sep 2006, 20:45

7

10

11,299

by: Bunuel

30 Jul 2015, 07:22

ER

A college surveyed 50 students to determine the average

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shobhitb

18 Jun 2006, 06:33

2

12

4,401

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

45,736

by: georgesanjay

15 Jul 2015, 07:48

ER

List L consists of the positive integers

555-605 (Medium) | Statistics and Sets Problems

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

TheGmatTutor

13 Jul 2015, 10:51

5

2

2,722

by: GMATinsight

13 Jul 2015, 12:18

ER

If x is an integer such that x > 0, is it true that x is an integer?

555-605 (Medium) | Number Properties

555-605 (Medium) | Number Properties hide tags

Bunuel

09 Jul 2015, 04:19

3

6

3,745

by: Bunuel

13 Jul 2015, 03:06

ER

Car X leaves Town A at 2 p.m. and drives toward Town B at a constant

655-705 (Hard) | Distance and Speed Problems

655-705 (Hard) | Distance and Speed Problems hide tags

pranit

05 Jul 2015, 12:08

9

10

6,191

by: Bunuel

05 Jul 2015, 12:10

ER

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

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BN1989

12 Jun 2013, 03:25

8

2

4,856

by: bumpbot

02 Jul 2015, 06:37

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x is a positive integer; what is the value of x? 1) The sum

505-555 (Easy) | Number Properties

505-555 (Easy) | Number Properties hide tags

rajatr

25 Apr 2013, 01:50

2

3

5,726

by: bumpbot

26 Jun 2015, 02:03

ER

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

a, b and c are integers such that a < b < c. Do they have a

805+ (Hard) | Statistics and Sets Problems

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

cyberjadugar

09 Jun 2012, 12:04

3

2

3,348

by: mika84

22 Jun 2015, 14:06

ER

Is x = 1?

505-555 (Easy) | Algebra

505-555 (Easy) | Algebra hide tags

Bunuel

19 Jun 2015, 01:55

6

5

4,720

by: Bunuel

22 Jun 2015, 06:22

ER

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

3,958

by: Harley1980

19 Jun 2015, 12:33

ER

Seven different numbers are selected from the integers 1 to 100, and

555-605 (Medium) | Remainders

555-605 (Medium) | Remainders hide tags

cebenez

19 Jun 2015, 00:31

25

6

8,821

by: Bunuel

19 Jun 2015, 00:32

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

10

3,417

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

4,932

by: IanStewart

16 Jun 2015, 14:54

ER

Both Betty and Wilma earn annual salaries of more than $50000. Is

555-605 (Medium) | Word Problems

555-605 (Medium) | Word Problems hide tags

gamjatang

16 Dec 2005, 00:17

5

13

8,449

by: Bunuel

08 Jun 2015, 02:48

ER

How much water should the milkman add to milk purchased

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monikaleoster

03 Nov 2012, 08:46

33

13

10,545

by: KarishmaB

13 May 2015, 23:01

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If distinct points A, B, C, and D form a right triangle ABC

555-605 (Medium) | Geometry

555-605 (Medium) | Geometry hide tags

far257

10 Aug 2011, 08:44

5

11

4,544

by: Bunuel

11 May 2015, 08:39

ER

Each resident of Ranchville either likes or dislikes Wrestling and eac

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shohrat6383

24 Apr 2015, 08:42

2

6

1,811

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

12,960

by: ash99

22 Apr 2015, 11:32

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If x and y are integers, is xy even?

Sub 505 (Easy) | Number Properties

Sub 505 (Easy) | Number Properties hide tags

mpcostello

20 Apr 2015, 04:35

5

4,500

by: Bunuel

20 Apr 2015, 04:36

ER

If a and b are positive, a% of what number is equal to b% of a?

555-605 (Medium) | Percent and Interest Problems

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

petu

19 Apr 2015, 11:39

2

3,113

by: EMPOWERgmatRichC

19 Apr 2015, 12:40

ER

What is the maximum number of arrangements in which N students can be

555-605 (Medium) | Number Properties

555-605 (Medium) | Number Properties hide tags

Bunuel

05 Feb 2015, 09:10

8

6,607

by: KarishmaB

30 Mar 2015, 21:01

ER

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

3,237

by: SherLocked2018

30 Mar 2015, 02:33

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Tom can buy a certain type-writer for Z1 dollars in city X,

655-705 (Hard) | Word Problems

655-705 (Hard) | Word Problems hide tags

pb_india

02 May 2005, 12:49

10

4

4,129

by: bumpbot

24 Mar 2015, 23:41

ER

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

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Awli

26 Feb 2015, 11:24

6

4

2,817

by: KarishmaB

23 Mar 2015, 22:25

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If x > 0, is √x > x ?

555-605 (Medium) | Inequalities

555-605 (Medium) | Inequalities hide tags

Bunuel

16 Feb 2015, 06:48

7

5

4,209

by: EMPOWERgmatRichC

22 Feb 2015, 23:43