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

181

15

82,785

by: thisisakr

16 Apr 2026, 11:46

ER

100 Hardest and easiest questions for DS as of May 2026

1, 2

Bunuel

01 Jan 2026, 05:45

861

24

190,993

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

490,932

by: bb

29 Aug 2025, 13:27

ER

8 people: A, B, C, D, E, F, G, H - are sitting around a circular table

705-805 (Hard) | Word Problems

705-805 (Hard) | Word Problems hide tags

amanvermagmat

24 Feb 2018, 00:44

2

20,540

by: DeeptiManyaExpert

27 Aug 2019, 03:11

ER

8 schools sent a total of 96 students to a math club competition, with

805+ (Hard) | Min-Max Problems

805+ (Hard) | Min-Max Problems hide tags

earnit

17 Oct 2014, 15:33

99

10

15,483

by: bumpbot

25 May 2026, 09:51

ER

8^a*(1/4)^b = ? (1) b = 1.5a (2) a = 2

555-605 (Medium) | Algebra, Exponents

555-605 (Medium) | Algebra, Exponents hide tags

Bunuel

04 Nov 2014, 09:31

44

8

16,899

by: Sof22

10 Feb 2025, 09:19

ER

86 people attended the screening of a movie. If the number of males li

705-805 (Hard) | Absolute Values, Fractions and Ratios

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

MBAisGoal

17 Jun 2019, 09:03

25

5

5,358

by: bumpbot

27 May 2025, 14:01

ER

892,132,24x If x represents the units digit of the number a

555-605 (Medium) | Multiples and Factors

555-605 (Medium) | Multiples and Factors hide tags

atalpanditgmat

14 Jun 2013, 11:39

4

5,405

by: Lastlap2016

26 Apr 2016, 22:56

ER

990 people went to the GMAT exam, how many boys didn't pass the test?

555-605 (Medium) | Overlapping Sets

555-605 (Medium) | Overlapping Sets hide tags

Bunuel

19 Feb 2025, 01:30

2

3

835

by: NextstopISB

19 Feb 2025, 09:29

ER

A "gamma sequence" is defined as an infinite sequence of pos

555-605 (Medium) | Sequences

555-605 (Medium) | Sequences hide tags

Laila12618

26 Aug 2020, 09:06

19

6

3,585

by: bumpbot

14 May 2026, 22:25

ER

a + b = 8. Is ab > 8? (1) a^2 - b^2 = 32 (2) a^2 + b^2 = 40

605-655 (Medium) | Algebra, Inequalities

605-655 (Medium) | Algebra, Inequalities hide tags

Bunuel

03 Nov 2021, 05:00

2

1

1,855

by: Nidzo

03 Nov 2021, 06:15

ER

a = ? (1) a^3 + a^2 + 2a = 0 (2) a = -2a

705-805 (Hard) | Algebra

705-805 (Hard) | Algebra hide tags

mrcentauri

07 May 2020, 10:22

1

2

1,591

by: sujoykrdatta

07 May 2020, 21:19

ER

a = x + y and b = x - y. If a^2 = b^2, what is the value of

705-805 (Hard) | Algebra +2 tags

705-805 (Hard) | Algebra, Inequalities, Roots hide tags

eybrj2

05 Jun 2013, 03:37

84

13

11,195

by: bumpbot

23 May 2025, 10:27

ER

A $10 bill (1,000 cents) was replaced with 50 coins having the same to

705-805 (Hard) | Word Problems

705-805 (Hard) | Word Problems hide tags

gmatt1476

21 Sep 2019, 16:16

64

7

17,527

by: bumpbot

12 Jan 2026, 13:12

ER

A 20 kilograms mixture of dry fruits consisting of x percent of almond

805+ (Hard) | Mixture Problems

805+ (Hard) | Mixture Problems hide tags

Bunuel

29 Dec 2021, 04:30

13

2

2,824

by: bumpbot

28 Jun 2025, 12:45

ER

A 30-ounce pitcher is currently filled to exactly half its capacity

555-605 (Medium) | Mixture Problems +2 tags

555-605 (Medium) | Mixture Problems, Word Problems, Work and Rate Problems hide tags

Sajjad1994

27 Jan 2020, 10:43

8

2

3,243

by: ccooley

31 Jan 2020, 20:04

A 5-mile long cylindrical sewage pipe was laid underground. Some years

705-805 (Hard) | Geometry

705-805 (Hard) | Geometry hide tags

anubchau

03 Aug 2022, 07:47

5

1,395

by: dbcoupie123

12 Feb 2023, 12:04

ER

A 500-gallon cistern is filled to half its capacity with water.

Sub 505 (Easy) | Work and Rate Problems

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

Bunuel

10 Jun 2025, 00:30

4

3

786

by: ManifestDreamMBA

10 Jun 2025, 23:54

ER -1

A 6-student Senior Sports Committee is being selected from the seniors

805+ (Hard) | Word Problems

805+ (Hard) | Word Problems hide tags

Bunuel

28 Jun 2025, 01:12

5

2

2,293

by: nhauyen837

27 Jun 2025, 19:42

ER

A and B are distinct natural numbers. Is A + B odd?

805+ (Hard) | Number Properties

805+ (Hard) | Number Properties hide tags

EgmatQuantExpert

01 Mar 2019, 02:22

10

9

3,509

by: bumpbot

21 Nov 2025, 09:40

A and B are distinct positive integers. What is A^B - B^A ?

655-705 (Hard) | Exponents, Number Properties

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

amanvermagmat

26 Jul 2018, 11:39

4

2

1,513

by: bumpbot

13 Aug 2024, 14:39

ER

A and B are in a line to purchase tickets. How many people are in the

655-705 (Hard) | Word Problems

655-705 (Hard) | Word Problems hide tags

Bunuel

15 Sep 2020, 10:00

10

8

5,013

by: Gmat860sanskar

11 Mar 2026, 12:30

ER

a and b are integers such that a*b # 0. Is |a|/|b| = a/b?

555-605 (Medium) | Absolute Values

555-605 (Medium) | Absolute Values hide tags

joylive

24 Nov 2012, 08:56

5

3

2,975

by: Bunuel

14 Aug 2017, 01:02

ER

A and B are integers, is (0.5)^(AB) > 1?

705-805 (Hard) | Algebra, Exponents

705-805 (Hard) | Algebra, Exponents hide tags

daviesj

17 Feb 2013, 20:58

14

5

5,020

by: bumpbot

15 Jul 2022, 05:05

ER

a and b are integers. [x] is an integer less than or equal to x.

805+ (Hard) | Number Properties

805+ (Hard) | Number Properties hide tags

adlakha1992

25 May 2019, 05:10

4

2

2,795

by: MahmoudFawzy

25 May 2019, 11:15

ER

a and b are natural odd numbers. Find the last digit of

805+ (Hard) | Number Properties

805+ (Hard) | Number Properties hide tags

SherzodAzamov

09 Jan 2021, 07:46

9

3

1,760

by: bumpbot

23 Apr 2025, 10:42

ER

a and b are non zero integers. if |a| +|b| = 8, what is the value of

605-655 (Medium) | Absolute Values

605-655 (Medium) | Absolute Values hide tags

Rushilkhera

25 Jun 2016, 23:26

8

4,274

by: bumpbot

22 Sep 2024, 23:32

A and B are non zero real numbers. Is A/B > B/A? (1) A^2 > B^2 (2)

805+ (Hard) | Inequalities

805+ (Hard) | Inequalities hide tags

amanvermagmat

21 Jan 2019, 22:15

14

12

3,243

by: bumpbot

22 May 2020, 02:44

ER

A and B are nonzero integers, is A < 5B?

555-605 (Medium) | Inequalities

555-605 (Medium) | Inequalities hide tags

Bunuel

17 Sep 2015, 01:08

11

6

4,387

by: danbrown9445

27 Jun 2021, 02:01

ER

a and b are positive integers such that they do not have any common pr

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

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

kiran120680

06 Jun 2019, 09:30

23

8

4,550

by: bumpbot

11 Sep 2025, 07:50

ER

a and b are positive integers. What is the value of b?

555-605 (Medium) | Multiples and Factors

555-605 (Medium) | Multiples and Factors hide tags

Bunuel

21 Apr 2022, 01:30

1

1,001

by: paulrahul

22 Apr 2022, 13:36

ER

a and b are positive numbers. What is the value of (a-b)/(a+b)?

555-605 (Medium) | Algebra

555-605 (Medium) | Algebra hide tags

Bunuel

29 Jun 2023, 04:00

2

1,059

by: Akshay790

30 Jun 2023, 03:25

ER

A and B are running in opposite direction on a circular track

555-605 (Medium) | Distance and Speed Problems

555-605 (Medium) | Distance and Speed Problems hide tags

GMATbuster92

20 Jul 2018, 11:56

10

3

5,695

by: bumpbot

11 Jul 2024, 01:37

A and B are running in opposite direction on a circular track

505-555 (Easy) | Distance and Speed Problems

505-555 (Easy) | Distance and Speed Problems hide tags

GMATbuster92

20 Jul 2018, 11:55

1

5

4,008

by: bumpbot

25 Jun 2024, 03:23

ER

A and B are the sets shown above. Another set C also has a total of 4

705-805 (Hard) | Combinations

705-805 (Hard) | Combinations hide tags

Bunuel

21 Jul 2022, 01:30

5

6

2,881

by: bumpbot

03 Jul 2024, 15:56

A and B are two integers. Is A-7B Even?

555-605 (Medium) | Multiples and Factors, Number Properties

555-605 (Medium) | Multiples and Factors, Number Properties hide tags

stonecold

03 Aug 2016, 04:57

1

3

2,262

by: stonecold

24 Aug 2016, 02:16

ER

A and B are two positive integers. What is the Greatest prime factor

655-705 (Hard) | Multiples and Factors, Number Properties

655-705 (Hard) | Multiples and Factors, Number Properties hide tags

amanvermagmat

17 Mar 2019, 11:38

1

1,863

by: IanStewart

17 Mar 2019, 12:27

A and B are two runners competing in a race on a circular track of

705-805 (Hard) | Distance and Speed Problems

705-805 (Hard) | Distance and Speed Problems hide tags

Gmat750aspirant

03 Mar 2025, 09:27

7

3

1,722

by: f3rn4nd44m0r1m

11 Sep 2025, 07:03

ER

A and B are two sets containing the elements shown above

655-705 (Hard) | Statistics and Sets Problems

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

Bunuel

28 Jun 2022, 01:30

7

10

2,183

by: NIKKtheSolver33

05 Jan 2026, 05:45

ER

A and B brought a radio each for the same price, $z. A and B sold thei

555-605 (Medium) | Percent and Interest Problems

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

Bunuel

07 Nov 2019, 03:04

5

6

3,491

by: bumpbot

02 Nov 2022, 04:32

ER

A and B got a salary increment of 8%.

555-605 (Medium) | Word Problems

555-605 (Medium) | Word Problems hide tags

Kaushik786

08 Mar 2021, 05:33

1

942

by: BrushMyQuant

08 Mar 2021, 10:11

ER

A and B have a total of $220 between them. Find the amount with A?

805+ (Hard) | Algebra, Word Problems

805+ (Hard) | Algebra, Word Problems hide tags

aa008

10 Oct 2018, 20:24

5

2

3,042

by: bumpbot

24 Jun 2025, 12:12

ER

A and B on working together take n hours to complete work. If B takes

555-605 (Medium) | Work and Rate Problems

555-605 (Medium) | Work and Rate Problems hide tags

Bunuel

24 Nov 2021, 09:00

7

2

3,146

by: bumpbot

10 Jan 2023, 07:48

ER

A and B work at digging a ditch alternately for a day each. If A can

805+ (Hard) | Work and Rate Problems

805+ (Hard) | Work and Rate Problems hide tags

nick1816

29 Apr 2019, 02:34

53

6

7,000

by: Vivek1707

31 May 2026, 11:14

ER

A and k are integer numbers higher than 3. A is a prime number but k i

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

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

diota2004

28 Feb 2017, 09:46

32

7

3,264

by: Bunuel

18 Oct 2025, 12:29

ER

A author writes in his book : "I was born in year (x^2 + 4x + 4 ) and

705-805 (Hard) | Algebra, Arithmetic

705-805 (Hard) | Algebra, Arithmetic hide tags

maliyeci

04 Sep 2016, 04:45

14

6

3,611

by: bumpbot

02 Jul 2024, 07:45

ER

a b = (1) a + 3a is 4 less than b + 3b. (2) a + 3b is two times more

605-655 (Medium) | Algebra

605-655 (Medium) | Algebra hide tags

Bunuel

30 Jun 2022, 19:15

2

926

by: ThatDudeKnows

30 Jun 2022, 21:13

ER

A bag contains 24 chips, each of which is black, blue, green, or red,

505-555 (Easy) | Probability

505-555 (Easy) | Probability hide tags

Bunuel

29 Apr 2018, 09:25

2

3,371

by: v12345

03 Jul 2020, 23:46

ER

A bag contains a mixture of beans and pulses. To achieve 20 percent be

555-605 (Medium) | Mixture Problems

555-605 (Medium) | Mixture Problems hide tags

Bunuel

25 Jun 2017, 04:07

20

10

6,731

by: bumpbot

12 May 2026, 21:28

ER

A bag contains a total of 30 only green and black balls such that the

555-605 (Medium) | Probability

555-605 (Medium) | Probability hide tags

Bunuel

28 Apr 2021, 07:00

1

1,755

by: MarmikUpadhyay

28 Apr 2021, 21:50

ER

A bag contains at least 10 blue marbles and at least 10 red marbles

805+ (Hard) | Remainders

805+ (Hard) | Remainders hide tags

Bunuel

25 Nov 2019, 01:02

12

4

5,060

by: gmatprepper94111

09 Oct 2022, 21:54

ER

A bag contains balls, of which some are red and the others are blue.

555-605 (Medium) | Word Problems

555-605 (Medium) | Word Problems hide tags

Bunuel

30 Aug 2023, 01:30

3

1

1,506

by: gmatophobia

30 Aug 2023, 12:35

ER

A bag contains black and white marbles. How many white marbles are the

Sub 505 (Easy) | Probability

Sub 505 (Easy) | Probability hide tags

Bunuel

03 May 2026, 12:20

5

7

8,931

by: bumpbot

20 Jun 2020, 05:43