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

78,759

by: thisisakr

16 Apr 2026, 11:46

ER

100 Hardest and easiest questions for DS as of March 2026

1, 2

Bunuel

01 Jan 2026, 05:45

856

24

188,546

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

487,974

by: bb

29 Aug 2025, 13:27

ER

Each term of set T is a multiple of 5, is the standard deviation of

555-605 (Medium) | Statistics and Sets Problems

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

Jivana

04 Sep 2009, 18:29

133

7

19,795

by: bumpbot

06 Jul 2025, 11:18

ER

If z is a positive integer is root(Z) an integer ?

655-705 (Hard) | Algebra, Number Properties

655-705 (Hard) | Algebra, Number Properties hide tags

rxs0005

22 Nov 2017, 00:27

50

10

12,056

by: bumpbot

08 Jul 2025, 03:13

ER

If sqrt(4a) is an integer, is sqrt (a) an integer

605-655 (Medium) | Number Properties

605-655 (Medium) | Number Properties hide tags

rxs0005

27 Oct 2013, 06:15

49

13

11,335

by: bumpbot

08 Jul 2025, 03:29

ER

The table above shows the number of students in a certain high school

655-705 (Hard) | Overlapping Sets

655-705 (Hard) | Overlapping Sets hide tags

Bunuel

26 Oct 2015, 10:07

115

11

29,597

by: bumpbot

08 Jul 2025, 07:12

ER

Which data set has the greater standard deviation, data set K or data

505-555 (Easy) | Statistics and Sets Problems

505-555 (Easy) | Statistics and Sets Problems hide tags

Bunuel

26 Feb 2015, 06:36

32

13

14,590

by: bumpbot

08 Jul 2025, 10:47

ER

In the sequence a1,a2,a3,…, an,an is determined for all values of n>2

555-605 (Medium) | Sequences

555-605 (Medium) | Sequences hide tags

Bunuel

29 Jan 2015, 08:35

22

8

8,853

by: bumpbot

08 Jul 2025, 15:02

ER

An infinite sequence of positive integers is called a coprime sequence

655-705 (Hard) | Number Properties, Sequences

655-705 (Hard) | Number Properties, Sequences hide tags

enigma123

13 Feb 2012, 17:14

70

11

15,498

by: bumpbot

08 Jul 2025, 22:29

ER

In the rectangular coordinate system, line k passes through the point

705-805 (Hard) | Coordinate Plane

705-805 (Hard) | Coordinate Plane hide tags

gmatt1476

21 Sep 2019, 17:54

177

9

18,169

by: bumpbot

09 Jul 2025, 01:01

ER

GMAT Club Olympics 2025 (Day 7): A museum gift shop packed a number of

705-805 (Hard) | Fractions and Ratios

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

1, 2, 3, 4, 5

Bunuel

08 Jul 2025, 08:00

51

89

3,100

by: Bunuel

09 Jul 2025, 08:56

ER

A jar contains 30 marbles, of which 20 are red and 10 are blue. If 9

Sub 505 (Easy) | Probability

Sub 505 (Easy) | Probability hide tags

Bunuel

03 Sep 2022, 04:47

21

12

24,382

by: bumpbot

10 Jul 2025, 12:32

ER

When the positive number a is rounded to the nearest tenth

705-805 (Hard) | Number Properties

705-805 (Hard) | Number Properties hide tags

frankiegar

19 Sep 2012, 06:11

101

13

26,435

by: licrolicro

10 Jul 2025, 13:26

ER

If x and y are positive integers is y odd?

805+ (Hard) | Algebra, Number Properties

805+ (Hard) | Algebra, Number Properties hide tags

devinawilliam83

04 Mar 2012, 23:42

205

10

29,070

by: bumpbot

11 Jul 2025, 09:00

ER

If x > 0, is x^2 < x ? (1) 0.1 < x < 0.4 (2) x^3 < x^2

505-555 (Easy) | Inequalities

505-555 (Easy) | Inequalities hide tags

smartyman

15 Oct 2016, 10:14

13

10

9,592

by: bumpbot

12 Jul 2025, 07:06

ER

Is y = 6? (1) y^2 = 36 (2) y^2 - 7y + 6 = 0

505-555 (Easy) | Algebra

505-555 (Easy) | Algebra hide tags

ganand

08 Apr 2017, 03:10

28

5

12,913

by: Bunuel

12 Jul 2025, 23:22

ER

For the list of numbers above there is exactly one mode. Is the range

705-805 (Hard) | Statistics and Sets Problems

705-805 (Hard) | Statistics and Sets Problems hide tags

Bunuel

19 May 2017, 00:17

37

7

9,340

by: ishita_sud

13 Jul 2025, 12:24

ER

Ken bought a shirt at a price of D dollars, to which a sales tax of p

805+ (Hard) | Word Problems

805+ (Hard) | Word Problems hide tags

nick13

16 Sep 2024, 07:44

92

9

17,321

by: ManishaPrepMinds

14 Jul 2025, 02:51

ER

In the sequence 1, 2, 4, 8, 16, 32, …, each term after the

605-655 (Medium) | Sequences

605-655 (Medium) | Sequences hide tags

dkverma

03 Nov 2010, 02:51

69

8

15,550

by: bumpbot

15 Jul 2025, 12:36

ER

To raise funds, a racing team sold T-shirts imprinted with

655-705 (Hard) | Word Problems

655-705 (Hard) | Word Problems hide tags

guerrero25

30 Oct 2013, 16:01

86

11

21,790

by: bumpbot

16 Jul 2025, 01:02

ER

A car manufacturer organized a test drive of two of its prototypes.

805+ (Hard) | Statistics and Sets Problems

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

globaldesi

17 Aug 2020, 22:13

28

10

5,306

by: bumpbot

16 Jul 2025, 22:22

ER

Each first-year student at a certain school selects either

555-605 (Medium) | Overlapping Sets

555-605 (Medium) | Overlapping Sets hide tags

enigma123

29 Mar 2012, 15:59

15

8

8,400

by: bumpbot

17 Jul 2025, 11:20

ER

If n is a positive integer greater than 1, what is the smallest positi

805+ (Hard) | Multiples and Factors, Number Properties

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

AbhiJ

15 Jul 2013, 08:40

34

8

9,989

by: bumpbot

17 Jul 2025, 20:27

ER

A drawer contains 6 socks. If two socks are randomly

805+ (Hard) | Probability

805+ (Hard) | Probability hide tags

BrentGMATPrepNow

14 Nov 2016, 08:12

75

11

13,943

by: bumpbot

17 Jul 2025, 20:38

ER

If N is a positive three-digit number that is greater than 2

805+ (Hard) | Number Properties

805+ (Hard) | Number Properties hide tags

xhimi

09 Dec 2013, 04:54

154

14

22,410

by: bumpbot

17 Jul 2025, 21:45

ER

W, X, Y and Z are four different positive integers.

805+ (Hard) | Remainders

805+ (Hard) | Remainders hide tags

BrentGMATPrepNow

06 Mar 2019, 11:28

36

5

6,072

by: bumpbot

17 Jul 2025, 21:59

ER

Lee has three separate savings accounts. What is the total amount of

605-655 (Medium) | Word Problems

605-655 (Medium) | Word Problems hide tags

guddo

24 Jan 2024, 01:33

65

8

9,857

by: monarchme

18 Jul 2025, 01:19

ER

Each employee of Company Z is an employee of either division X or divi

805+ (Hard) | Fractions and Ratios, Word Problems

805+ (Hard) | Fractions and Ratios, Word Problems hide tags

GMATBLACKBELT

18 Jul 2019, 00:54

661

18

77,929

by: SandeshRathi

18 Jul 2025, 02:54

ER

What is the median duration of a client engagement, which are billed

655-705 (Hard) | Statistics and Sets Problems

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

Bunuel

16 Aug 2019, 02:39

6

4

2,160

by: bumpbot

18 Jul 2025, 04:48

ER

If x and y are positive integers, what is the value of (x + y)?

655-705 (Hard) | Algebra, Inequalities

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

Bunuel

09 Jun 2015, 02:37

8

9

5,697

by: bumpbot

19 Jul 2025, 17:53

ER

If a, b, and c are positive integers, with a < b < c, are a, b, and c

655-705 (Hard) | Algebra, Number Properties

655-705 (Hard) | Algebra, Number Properties hide tags

SMAbbas

02 Oct 2020, 02:07

86

13

23,166

by: bumpbot

19 Jul 2025, 18:04

ER

If n is a positive integer greater than 1, is (n + 11)^(1/2) = n^(1/2)

655-705 (Hard) | Algebra, Number Properties

655-705 (Hard) | Algebra, Number Properties hide tags

Viserion99

24 May 2018, 21:34

28

15

5,574

by: bumpbot

19 Jul 2025, 18:11

ER

Are the positive integers x and y consecutive?

705-805 (Hard) | Algebra

705-805 (Hard) | Algebra hide tags

daviesj

06 Jan 2013, 08:04

24

9

7,660

by: bumpbot

19 Jul 2025, 18:17

ER

For integers x, y, and z, x = y^2. What is the value of z?

605-655 (Medium) | Algebra

605-655 (Medium) | Algebra hide tags

HarveyS

08 Apr 2014, 16:01

228

17

23,747

by: bumpbot

19 Jul 2025, 19:04

ER

An infinite sequence of positive integers is called an "alph

555-605 (Medium) | Sequences

555-605 (Medium) | Sequences hide tags

Ev123

23 Jul 2014, 05:24

108

15

34,904

by: agrasan

19 Jul 2025, 21:19

ER

Is x < y?

655-705 (Hard) | Algebra

655-705 (Hard) | Algebra hide tags

Puneethrao

01 Nov 2013, 01:01

14

8

6,278

by: bumpbot

20 Jul 2025, 19:19

ER

Is x>0 ?

605-655 (Medium) | Inequalities

605-655 (Medium) | Inequalities hide tags

BillyZ

11 May 2017, 02:34

13

14

6,441

by: bumpbot

21 Jul 2025, 03:11

ER

Is x/y < xy ? (1) xy > 0 (2) y < -1

705-805 (Hard) | Inequalities

705-805 (Hard) | Inequalities hide tags

Bunuel

26 Jan 2021, 01:15

24

10

7,058

by: bumpbot

21 Jul 2025, 03:13

ER

Is x > y? (1) x^2 > y (2) x – |y| > 0

505-555 (Easy) | Absolute Values, Inequalities

505-555 (Easy) | Absolute Values, Inequalities hide tags

Bunuel

23 Mar 2016, 11:37

28

12

7,472

by: bumpbot

21 Jul 2025, 10:42

ER

Was the average (arithmetic mean) sale price of a new home in region R

605-655 (Medium) | Statistics and Sets Problems

605-655 (Medium) | Statistics and Sets Problems hide tags

Carcass

09 Jun 2023, 11:33

64

12

11,753

by: Ayushi2000

22 Jul 2025, 14:41

ER

How many cylindrical cans with a radius of 2 inches and a height of 6

705-805 (Hard) | Geometry

705-805 (Hard) | Geometry hide tags

damham17

22 Nov 2018, 04:01

72

6

12,108

by: Bunuel

23 Jul 2025, 14:23

ER

If a, b, and c are consecutive integers and 0 < a < b < c, is the prod

655-705 (Hard) | Number Properties

655-705 (Hard) | Number Properties hide tags

Carcass

27 Jul 2017, 08:18

185

15

37,185

by: bumpbot

25 Jul 2025, 00:40

ER

A certain expressway has Exits J, K, L, and M, in that order. What is

505-555 (Easy) | Arithmetic, Coordinate Plane

505-555 (Easy) | Arithmetic, Coordinate Plane hide tags

Bunuel

30 Jul 2012, 02:12

71

6

30,769

by: bumpbot

26 Jul 2025, 04:47

ER

Is x a prime number? (2) y^2 = x (1) 2x/x^2 = 1

655-705 (Hard) | Algebra, Number Properties

655-705 (Hard) | Algebra, Number Properties hide tags

Bunuel

16 Feb 2015, 06:54

39

13

7,812

by: samriddhi1234

26 Jul 2025, 07:48

ER

30 people in total attended an office party for a

655-705 (Hard) | Word Problems

655-705 (Hard) | Word Problems hide tags

mvivekc

15 Jul 2014, 23:42

49

16

14,495

by: bumpbot

27 Jul 2025, 04:50

ER

Bobby and his younger brother Johnny have the same birthday. Johnny's

805+ (Hard) | Word Problems

805+ (Hard) | Word Problems hide tags

Bunuel

03 Nov 2014, 09:31

116

7

12,889

by: bumpbot

27 Jul 2025, 05:38

ER

A store sells only two types of shirts - branded and non-branded

655-705 (Hard) | Word Problems

655-705 (Hard) | Word Problems hide tags

souvik101990

20 Apr 2018, 01:34

17

10

5,077

by: bumpbot

28 Jul 2025, 04:48

ER

a, b, and c are three integers such that a and b are less

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

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

Carcass

18 Apr 2012, 06:05

25

11

7,782

by: bumpbot

28 Jul 2025, 11:31

ER

Placerville's soccer team won one third of its first 18 games and one

555-605 (Medium) | Fractions and Ratios

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

d999

11 Mar 2020, 01:48

12

7

6,372

by: bumpbot

28 Jul 2025, 23:16

ER

What is the value of x? (1) √x^4 = 9 (2) √x^2 = -x

555-605 (Medium) | Algebra +2 tags

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

Bunuel

13 Aug 2018, 04:03

35

11

8,771

by: bumpbot

29 Jul 2025, 06:42

ER

Five coffee-chicory blends - J, K, L, M, and N - are all priced

705-805 (Hard) | Non-Math Related +2 tags

705-805 (Hard) | Non-Math Related, Statistics and Sets Problems, Word Problems hide tags

GMATCoachBen

06 Feb 2024, 18:30

143

9

14,381

by: goaltop30mba

31 Jul 2025, 15:32

ER

What is the value of x? (1) x = 1/x^2 (2) |x| = 1/x

555-605 (Medium) | Absolute Values, Algebra

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

Bunuel

01 Jul 2018, 23:40

32

10

6,899

by: bumpbot

02 Aug 2025, 20:29