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

79,105

by: thisisakr

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

857

24

188,746

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

488,319

by: bb

29 Aug 2025, 13:27

ER

During an experiment, the population of a bacterium increased ...

505-555 (Easy) | Exponents, Sequences

505-555 (Easy) | Exponents, Sequences hide tags

CaptainMeow

08 Oct 2019, 05:37

17

6

8,300

by: Bunuel

18 Nov 2025, 23:12

ER

Train X leaves Los Angeles at 10:00AM and travels East at a constant

655-705 (Hard) | Distance and Speed Problems

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

Bunuel

03 May 2024, 01:30

17

4

2,282

by: Bunuel

27 Nov 2025, 09:34

ER

Set S contains N integers. Is S a set of distinct consecutive integers

655-705 (Hard) | Statistics and Sets Problems

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

d999

27 Jun 2020, 06:09

17

12

4,319

by: bumpbot

29 Nov 2025, 00:39

ER

What is the thousandths digit of the decimal p ?

505-555 (Easy) | Fractions and Ratios

505-555 (Easy) | Fractions and Ratios hide tags

thevenus

17 Oct 2012, 07:05

17

7

8,675

by: bumpbot

29 Nov 2025, 13:53

ER

A university badminton club has both students and professors as member

605-655 (Medium) | Word Problems

605-655 (Medium) | Word Problems hide tags

Bunuel

10 Nov 2020, 10:00

17

5

4,563

by: bumpbot

05 Dec 2025, 04:36

ER

The median age of 15 children in group A was 12. The median age of 19

655-705 (Hard) | Statistics and Sets Problems, Word Problems

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

Bunuel

13 Oct 2021, 06:00

17

5

5,519

by: Bunuel

14 Dec 2025, 23:27

ER

A certain building has only 2-room and 3-room apartments to rent. If

655-705 (Hard) | Statistics and Sets Problems

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

Bunuel

23 Jul 2019, 08:00

17

5

8,154

by: bumpbot

17 Dec 2025, 07:30

ER

A box contains black balls and white balls only. If a ball is randomly

555-605 (Medium) | Probability

555-605 (Medium) | Probability hide tags

BrentGMATPrepNow

16 Feb 2017, 12:32

17

7

11,128

by: bumpbot

24 Dec 2025, 21:49

ER

In Area X, for three continuous days in a certain month of 2012, five

705-805 (Hard) | Non-Math Related

705-805 (Hard) | Non-Math Related hide tags

gemministorm

22 Nov 2025, 12:59

17

8

1,804

by: RJ3001274402

25 Dec 2025, 08:52

ER

A number of ties are individually packaged in unmarked boxes. What is

805+ (Hard) | Word Problems

805+ (Hard) | Word Problems hide tags

Bunuel

08 Mar 2018, 21:19

17

13

4,467

by: Bunuel

08 Jan 2026, 12:39

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Tom is going to move, he has three kinds of boxes: large, medium, and

805+ (Hard) | Word Problems

805+ (Hard) | Word Problems hide tags

Bunuel

30 Dec 2020, 03:00

17

3

3,424

by: bumpbot

10 Jan 2026, 00:30

ER

If a bus took 4 hours to travel from town A to town B, what was its

805+ (Hard) | Distance and Speed Problems

805+ (Hard) | Distance and Speed Problems hide tags

Bunuel

09 May 2023, 13:49

17

5

8,122

by: bumpbot

10 Jan 2026, 05:15

ER

In a group of 3 girls and 2 boys, the average height is

805+ (Hard) | Word Problems

805+ (Hard) | Word Problems hide tags

souvik101990

12 Apr 2018, 13:26

17

10

4,256

by: bumpbot

14 Jan 2026, 00:05

ER

A set contains 24 even positive integers, not necessarily distinct. Do

605-655 (Medium) | Statistics and Sets Problems

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

akanksha.setiya

28 Oct 2017, 09:28

17

10

6,200

by: bumpbot

14 Jan 2026, 00:58

ER

GMAT CLUB OLYMPICS: If x is a positive integer greater than 3 and x^4

805+ (Hard) | Multiples and Factors, Remainders

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

Bunuel

27 Aug 2021, 09:05

17

3

5,574

by: egmat

14 Jan 2026, 22:10

ER

If a, b, c, and d are positive integers, what is the value of (a + b)

555-605 (Medium) | Algebra

555-605 (Medium) | Algebra hide tags

Bunuel

09 Mar 2022, 07:00

17

5

4,194

by: bumpbot

16 Jan 2026, 23:45

Each of the 20 students has 9, or 10, or 11 books. What is the average

655-705 (Hard) | Statistics and Sets Problems

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

rohan2345

13 Apr 2019, 03:07

17

4

3,044

by: bumpbot

18 Jan 2026, 04:57

ER

Is p + q = 0 ?

805+ (Hard) | Algebra

805+ (Hard) | Algebra hide tags

Asifpirlo

09 Aug 2013, 02:51

17

6

4,008

by: bumpbot

25 Jan 2026, 00:22

ER

12 Days of Christmas GMAT Competition - Day 4: If x and y are prime

805+ (Hard) | Exponents, Number Properties

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

Bunuel

17 Dec 2022, 07:00

17

7

4,434

by: bumpbot

26 Jan 2026, 04:44

ER

Peter traveled from home to school and returned along the same route

805+ (Hard) | Distance and Speed Problems

805+ (Hard) | Distance and Speed Problems hide tags

Bunuel

04 Nov 2019, 02:33

17

3

7,999

by: Saviooo

04 Feb 2026, 10:56

Is y < (x + z)/2 ? (1) y - x < z - y (2) z - y > (z - x)/2

505-555 (Easy) | Inequalities

505-555 (Easy) | Inequalities hide tags

nick_sun

20 Oct 2019, 03:21

17

6

16,816

by: totaltestprepNick

28 Feb 2026, 09:20

ER

S is a set of integers such that I. If x is in S, then x is in S.

555-605 (Medium) | Arithmetic, Statistics and Sets Problems

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

conty911

20 Sep 2024, 00:34

17

9

7,888

by: Bunuel

28 Feb 2026, 12:10

ER

Families in which some members argue with each other compete for

655-705 (Hard) | Combinations

655-705 (Hard) | Combinations hide tags

Bunuel

14 Nov 2023, 02:30

17

7

3,282

by: Flyingdutch1307

06 Mar 2026, 15:10

ER

A certain shop only sells items for a whole number of dollars and nine

805+ (Hard) | Word Problems

805+ (Hard) | Word Problems hide tags

Bunuel

06 Apr 2022, 07:30

17

2

3,306

by: bumpbot

07 Mar 2026, 08:22

If the number of factors of a positive integer,

805+ (Hard) | Exponents, Multiples and Factors

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

gmatophobia

17 May 2023, 00:01

17

4

3,214

by: aditya khanna

12 Mar 2026, 11:21

ER

Is the standard deviation of set S greater than the standard deviation

605-655 (Medium) | Statistics and Sets Problems

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

Bunuel

17 Jun 2020, 01:45

17

9

9,005

by: bumpbot

17 Mar 2026, 13:22

ER

In a certain company, at least 200 people own manual transmission

655-705 (Hard) | Percent and Interest Problems, Statistics and Sets Problems

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

MahmoudFawzy

07 Sep 2019, 11:16

17

5

10,005

by: bumpbot

22 Mar 2026, 07:30

ER

Arty, Martha, Jenny, and Ralph all set sales goals for the month of Ju

705-805 (Hard) | Word Problems

705-805 (Hard) | Word Problems hide tags

Bunuel

07 Jul 2018, 09:43

17

9

4,957

by: bumpbot

26 Mar 2026, 02:40

ER

In the figure, what is the value of r? (1) c = 2 (2) c = d

505-555 (Easy) | Coordinate Plane

505-555 (Easy) | Coordinate Plane hide tags

Bunuel

01 Mar 2023, 04:28

17

9

4,398

by: MartyMurray

31 Mar 2026, 05:08

ER

A certain pump working at a constant rate is used to remove rain water

655-705 (Hard) | Work and Rate Problems

655-705 (Hard) | Work and Rate Problems hide tags

GMATBusters

14 Mar 2020, 19:35

17

9

4,964

by: Advait01

05 Apr 2026, 07:05

ER

A person is to be selected at random from the group T of people. What

605-655 (Medium) | Probability

605-655 (Medium) | Probability hide tags

Bunuel

30 Sep 2024, 01:30

17

5

2,253

by: bumpbot

14 Apr 2026, 00:55

ER

12 Days of Christmas GMAT Competition - Day 3: A manufacturer creates

655-705 (Hard) | Mixture Problems, Word Problems

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

Bunuel

18 Dec 2024, 09:00

17

9

4,902

by: bumpbot

20 Apr 2026, 05:28

ER

A set consists of n distinct integers arranged in the order of increas

705-805 (Hard) | Statistics and Sets Problems

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

Bunuel

29 May 2020, 02:06

17

11

3,710

by: bumpbot

23 Apr 2026, 01:31

ER

In a certain Italian recipe book, every recipe that includes oregano

805+ (Hard) | Overlapping Sets

805+ (Hard) | Overlapping Sets hide tags

Bunuel

27 Jun 2024, 01:30

17

4

1,314

by: bumpbot

23 Apr 2026, 10:08

ER

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

5,047

by: Bunuel

13 Oct 2013, 16:05

ER

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

Poor Quality

Poor Quality hide tags

gmatprep2011

23 Sep 2011, 23:23

18

9

5,833

by: Bunuel

21 Sep 2014, 11:41

ER

Is x < y ? (1) The ratio of x to y is 7/9. (2) xy > 0

555-605 (Medium) | Fractions and Ratios, Inequalities

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

Naina1605

12 Feb 2012, 12:18

18

6

13,501

by: mvictor

18 Apr 2017, 13:16

ER

Many different groups apply to march in the annual GLBTGQ, etc. parade

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Poor Quality hide tags

chuchu1957

21 Jan 2015, 04:21

18

12

5,312

by: rekhabishop

18 Jul 2017, 05:12

ER

If x and n are integers such that x = 1^2 + 2^2 + 3^2 + . . . + n^2, w

805+ (Hard) | Exponents +2 tags

805+ (Hard) | Exponents, Number Properties, Remainders hide tags

Bunuel

20 Jan 2017, 07:37

18

7

4,067

by: thefibonacci

15 Jul 2018, 02:51

ER

In the figure above, QRS is a straight line and line TR bisects PRS

705-805 (Hard) | Geometry

705-805 (Hard) | Geometry hide tags

Jasontuyj2012

08 Dec 2018, 20:42

18

3

10,236

by: GMATBusters

08 Dec 2018, 20:43

ER

What is the units digit of 36^y?

555-605 (Medium) | Exponents, Number Properties

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

Bunuel

09 Feb 2017, 06:02

18

8

5,181

by: ksrutisagar

09 Feb 2019, 04:13

Is (a + b) < (c + d)? (1) c and d are negative integers such that

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Poor Quality hide tags

Nixondutta

09 Apr 2018, 04:40

18

8

2,079

by: ShukhratJon

22 May 2019, 02:51

ER

What is the difference of the integers m and n ?

655-705 (Hard) | Absolute Values, Inequalities

655-705 (Hard) | Absolute Values, Inequalities hide tags

guerrero25

18 Jun 2013, 15:41

18

10

4,662

by: bumpbot

13 Jun 2019, 22:57

ER

In the figure above, triangle MNO is equilateral. What is the area of

655-705 (Hard) | Geometry

655-705 (Hard) | Geometry hide tags

Bunuel

13 Nov 2018, 01:19

18

8

5,231

by: snehasultania

12 Jul 2019, 11:37

ER

When a random experiment is conducted, the probability that event A oc

655-705 (Hard) | Probability

655-705 (Hard) | Probability hide tags

Nums99

03 Aug 2019, 06:20

18

1

4,841

by: IanStewart

03 Aug 2019, 11:42

ER

If x and y are integers, is xy divisible by x^2?

705-805 (Hard) | Multiples and Factors +2 tags

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

Bunuel

09 Jan 2017, 03:26

18

10

4,204

by: bumpbot

03 Feb 2020, 11:53

ER

If cx - bx^3 = 0 where b and c are non-zero numbers, what is the value

605-655 (Medium) | Algebra

605-655 (Medium) | Algebra hide tags

Bunuel

20 Feb 2020, 02:16

18

3

3,651

by: TestPrepUnlimited

21 Feb 2020, 10:24

ER

Is |a| = b - c ?

605-655 (Medium) | Absolute Values

605-655 (Medium) | Absolute Values hide tags

gmat1011

23 Sep 2018, 09:13

18

19

8,110

by: bumpbot

01 Mar 2020, 04:23

ER

Is r between s and t? (1) |r -s| < |r - t| (2) |r -s| > |s - t|

705-805 (Hard) | Absolute Values, Inequalities

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

shivanigs

04 Apr 2019, 22:47

18

13

7,788

by: bumpbot

16 Apr 2020, 23:09

ER

How many odd factors does the integer n have?

605-655 (Medium) | Algebra, Number Properties

605-655 (Medium) | Algebra, Number Properties hide tags

firas92

03 Jun 2019, 00:27

18

7

4,490

by: gurmukh

10 Jul 2020, 09:20