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

79,453

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

858

24

188,936

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

488,608

by: bb

29 Aug 2025, 13:27

ER

If m and n are positive single-digit numbers such that the units' digi

655-705 (Hard) | Multiples and Factors

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

RenB

26 Sep 2023, 04:37

4

2

1,739

by: siddhantvarma

02 Sep 2024, 10:06

ER

Is the sum of x^y and y^x positive? (1) xy > 0 (2) x + y > 0

655-705 (Hard) | Exponents, Inequalities

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

Bunuel

13 May 2020, 08:09

9

3

5,002

by: bumpbot

02 Sep 2024, 13:59

ER

Is a^3 + b^2 + 4 divisible by 6?

705-805 (Hard) | Number Properties

705-805 (Hard) | Number Properties hide tags

EgmatQuantExpert

31 Jan 2018, 06:01

6

5

2,757

by: Ved22

04 Sep 2024, 00:15

ER

For non-zero numbers x,y & z Is x^2 + y^2 + 2z^2 odd ? (1) x - y is

705-805 (Hard) | Number Properties

705-805 (Hard) | Number Properties hide tags

CareerGeek

21 Nov 2019, 11:26

4

2

1,284

by: bumpbot

04 Sep 2024, 08:57

ER

Is z an odd integer? (1) z/3 is odd. (2) 3z is odd.

655-705 (Hard) | Number Properties

655-705 (Hard) | Number Properties hide tags

Juaz

01 May 2007, 00:09

28

8

13,612

by: Bunuel

04 Sep 2024, 09:41

ER

If p, q, r are positive integers such that p is q% of r, what is the

655-705 (Hard) | Percent and Interest Problems

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

Bunuel

13 Oct 2021, 07:00

11

5

6,183

by: bumpbot

05 Sep 2024, 00:38

ER

If the ratio of a to b to c to d is 1:2:3:4, what is the range of the

555-605 (Medium) | Statistics and Sets Problems

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

Bunuel

17 Jan 2024, 02:30

2

3

1,541

by: Bunuel

06 Sep 2024, 00:21

ER

Every day Guy takes the same N sandwiches to work. Guy takes to work

655-705 (Hard) | Overlapping Sets

655-705 (Hard) | Overlapping Sets hide tags

Bunuel

03 Jun 2021, 01:30

10

6

3,392

by: bumpbot

06 Sep 2024, 11:25

ER

What is the sum of a set of 33 consecutive multiples of 3?

655-705 (Hard) | Number Properties

655-705 (Hard) | Number Properties hide tags

TheUltimateWinner

28 Sep 2020, 09:15

3

2

1,684

by: bumpbot

07 Sep 2024, 00:02

ER

Is the positive integer x an odd number? (1) x2 + 3x + 4 is even.

555-605 (Medium) | Number Properties

555-605 (Medium) | Number Properties hide tags

Bunuel

23 May 2022, 01:30

2

1,335

by: bumpbot

07 Sep 2024, 02:39

ER

Is y a multiple of 15?

605-655 (Medium) | Number Properties

605-655 (Medium) | Number Properties hide tags

282552

18 May 2015, 04:35

50

8

12,358

by: bumpbot

07 Sep 2024, 03:06

ER

Is q < 0?

655-705 (Hard) | Arithmetic

655-705 (Hard) | Arithmetic hide tags

Mo2men

28 Dec 2018, 21:46

5

3

3,040

by: bumpbot

07 Sep 2024, 08:58

ER

a% of b is increased by a%.

505-555 (Easy) | Percent and Interest Problems

505-555 (Easy) | Percent and Interest Problems hide tags

GMATBusters

14 Mar 2020, 19:09

4

9

2,396

by: bumpbot

11 Sep 2024, 16:46

ER

If 4 < A < 6, n and m are positive integers with n > m, and T = A x 10

555-605 (Medium) | Inequalities

555-605 (Medium) | Inequalities hide tags

DensetsuNo

18 Jul 2016, 02:13

15

7

6,485

by: bumpbot

12 Sep 2024, 10:15

ER

If n is a member of the set {33, 36, 38, 39, 41, 42}, what is the va

Sub 505 (Easy) | Statistics and Sets Problems

Sub 505 (Easy) | Statistics and Sets Problems hide tags

mcelroytutoring

23 May 2020, 08:12

15

2

14,737

by: bumpbot

13 Sep 2024, 23:16

ER

The average of 6 numbers is 8. One new number is now added

505-555 (Easy) | Statistics and Sets Problems

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

EgmatQuantExpert

14 Sep 2024, 03:07

9

6

4,696

by: bumpbot

14 Sep 2024, 02:50

ER

What is the median of five integers 20, 22, 26, 30 and a?

805+ (Hard) | Statistics and Sets Problems

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

Bunuel

13 Mar 2016, 09:24

12

5

3,548

by: glagad

14 Sep 2024, 23:37

ER

If a and b are integers and a is even, what is the value of a - b?

555-605 (Medium) | Number Properties

555-605 (Medium) | Number Properties hide tags

aashaybaindurgmat

15 Oct 2017, 01:37

7

6

7,705

by: bumpbot

15 Sep 2024, 21:51

ER

In City X, a television ratings service estimates that the number of

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

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

eyunni

27 Oct 2007, 12:33

8

6

8,107

by: bumpbot

15 Sep 2024, 21:55

ER

What is the probability that it will rain on each of the next 3 days i

555-605 (Medium) | Probability

555-605 (Medium) | Probability hide tags

Bunuel

14 Aug 2017, 01:06

43

6

23,655

by: bumpbot

16 Sep 2024, 13:57

ER

Is 3a + 2b + 5c even if 0<a<b<c and a, b and c are integers?

605-655 (Medium) | Number Properties

605-655 (Medium) | Number Properties hide tags

Bunuel

05 Dec 2022, 10:45

5

4

1,400

by: bumpbot

17 Sep 2024, 02:30

ER

Is the positive square root of x an integer?

Sub 505 (Easy) | Number Properties

Sub 505 (Easy) | Number Properties hide tags

blackcrow

29 Dec 2013, 03:09

8

3

12,416

by: bumpbot

17 Sep 2024, 03:52

ER

Is 1/s=(s^2)*(t/u)?

555-605 (Medium) | Algebra, Arithmetic

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

BillyZ

09 Mar 2017, 19:10

15

10

5,691

by: bumpbot

17 Sep 2024, 04:36

ER

If x > 0 and y > 0, what is the value of x − 2y?

655-705 (Hard) | Algebra

655-705 (Hard) | Algebra hide tags

Bunuel

17 Mar 2020, 08:22

19

4

4,209

by: bumpbot

19 Sep 2024, 04:38

ER

If r and s are positive integers greater than 10, is r + s even?

505-555 (Easy) | Number Properties

505-555 (Easy) | Number Properties hide tags

Bunuel

30 Mar 2022, 07:30

3

2

2,359

by: bumpbot

19 Sep 2024, 04:48

ER

Is f(x) an increasing function?

705-805 (Hard) | Functions and Custom Characters

705-805 (Hard) | Functions and Custom Characters hide tags

pintukr

20 Sep 2024, 11:38

1

866

by: Bunuel

20 Sep 2024, 11:41

ER

What is the value of xy ? (1) x^2 + y^2 = 169 (2) x + y = 17

555-605 (Medium) | Algebra

555-605 (Medium) | Algebra hide tags

Bunuel

15 Feb 2023, 08:59

11

3

4,160

by: unraveled

21 Sep 2024, 09:18

ER

If x and y are positive integers, is x > y ?

655-705 (Hard) | Inequalities

655-705 (Hard) | Inequalities hide tags

gmatophobia

18 Feb 2024, 12:51

10

7

1,587

by: Manushya

22 Sep 2024, 12:49

ER

P, Q, R, S, and T represent five distinct points on the circumference

655-705 (Hard) | Geometry

655-705 (Hard) | Geometry hide tags

Bunuel

10 Apr 2020, 03:58

18

3

8,259

by: bumpbot

22 Sep 2024, 21:36

ER

How many girls are members of both the Math Club and the Chess Club?

555-605 (Medium) | Overlapping Sets

555-605 (Medium) | Overlapping Sets hide tags

Bunuel

13 Jul 2023, 01:30

6

2

2,117

by: bumpbot

23 Sep 2024, 08:03

ER

If w > x > y > z > 0, is z < 4?

805+ (Hard) | Algebra, Inequalities

805+ (Hard) | Algebra, Inequalities hide tags

BN1989

01 Apr 2012, 03:47

68

4

13,072

by: bumpbot

24 Sep 2024, 02:43

ER

In a survey of a certain locality it was found that 80% of

Sub 505 (Easy) | Overlapping Sets

Sub 505 (Easy) | Overlapping Sets hide tags

benjamin09

19 Aug 2014, 07:29

13

3

11,530

by: bumpbot

24 Sep 2024, 05:04

ER

Is the positive integer z a prime number? (1) z and the square root

655-705 (Hard) | Number Properties

655-705 (Hard) | Number Properties hide tags

Bunuel

27 Oct 2021, 04:00

9

5

4,089

by: bumpbot

24 Sep 2024, 19:08

ER

Two hours after X leaves college, Y leaves his home to intercept him.

705-805 (Hard) | Distance and Speed Problems

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

Bunuel

18 Jun 2024, 01:30

9

4

1,712

by: Bunuel

26 Sep 2024, 00:05

ER

A certain number of people were polled to determine which of three

555-605 (Medium) | Fractions and Ratios, Overlapping Sets

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

Bunuel

14 Jul 2023, 01:30

11

4

2,116

by: bumpbot

26 Sep 2024, 01:10

ER

If none of the students are ambidextrous, what percentage of the 20 st

Sub 505 (Easy) | Overlapping Sets

Sub 505 (Easy) | Overlapping Sets hide tags

JusTLucK04

15 Jan 2019, 08:29

6

4

14,501

by: bumpbot

26 Sep 2024, 02:29

ER

Jack bought one shampoo, two toothpastes, and two toothbrushes. If the

705-805 (Hard) | Word Problems

705-805 (Hard) | Word Problems hide tags

Bunuel

25 Jan 2021, 01:15

4

5

2,239

by: bumpbot

26 Sep 2024, 11:58

ER

How many cubic meters of water are in swimming pool K when it is full?

605-655 (Medium) | Geometry

605-655 (Medium) | Geometry hide tags

Bunuel

23 May 2020, 07:02

49

11

9,532

by: bumpbot

26 Sep 2024, 19:41

ER -1

Is 25/(a + 1) an integer? (1) a is a multiple of 25 (2) 0 <= a <= 25

655-705 (Hard) | Multiples and Factors

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

Bunuel

10 May 2020, 12:13

9

3

2,074

by: Ayeka

27 Sep 2024, 00:18

ER

How many even different factors does the integer P have?

605-655 (Medium) | Multiples and Factors, Number Properties

605-655 (Medium) | Multiples and Factors, Number Properties hide tags

gmihir

19 May 2012, 08:55

46

8

14,964

by: bumpbot

27 Sep 2024, 21:04

ER

A combined of 55 light bulbs are stored in two boxes; of these, a tota

505-555 (Easy) | Word Problems

505-555 (Easy) | Word Problems hide tags

enigma123

11 Jun 2019, 03:18

30

4

17,165

by: bumpbot

27 Sep 2024, 23:57

ER

If x and y are positive integers, is x/y < (x+2)/(y+3)?

555-605 (Medium) | Inequalities

555-605 (Medium) | Inequalities hide tags

Bunuel

02 Mar 2015, 08:20

68

14

18,944

by: bumpbot

28 Sep 2024, 03:34

ER

50 animals competed for prizes at a certain fair. How many of the anim

Sub 505 (Easy) | Overlapping Sets

Sub 505 (Easy) | Overlapping Sets hide tags

TheUltimateWinner

03 Jun 2020, 13:25

3

2

2,315

by: bumpbot

01 Oct 2024, 02:21

ER

In a random sample of 120 adults who identified a favorite sport, how

505-555 (Easy) | Word Problems

505-555 (Easy) | Word Problems hide tags

shasadou

12 Sep 2015, 12:26

7

4

4,986

by: bumpbot

01 Oct 2024, 02:24

ER

How many of the 40 securities in a portfolio are domestic stocks?

555-605 (Medium) | Overlapping Sets

555-605 (Medium) | Overlapping Sets hide tags

avohden

09 Oct 2013, 16:48

6

5

3,658

by: bumpbot

01 Oct 2024, 02:31

ER

A group of more than 2 people share an amount of money equally

805+ (Hard) | Word Problems

805+ (Hard) | Word Problems hide tags

shridhar786

12 Jul 2019, 04:34

11

3

3,400

by: bumpbot

01 Oct 2024, 21:16

ER

In the number 13,52#,@ and # represent distinct digits.

805+ (Hard) | Arithmetic, Multiples and Factors

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

godot53

10 Apr 2017, 06:03

55

4

7,267

by: bumpbot

02 Oct 2024, 13:49

ER

In 1979 Mr. Jackson bought a total of n shares of stock X and Mrs. Jac

505-555 (Easy) | Percent and Interest Problems

505-555 (Easy) | Percent and Interest Problems hide tags

Bunuel

03 Oct 2018, 03:32

14

2

10,329

by: bumpbot

02 Oct 2024, 14:37

ER

What is the remainder when a three-digit number ABC (where A, B and C

705-805 (Hard) | Multiples and Factors

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

Bunuel

22 Aug 2023, 01:30

4

1,918

by: Jon22

03 Oct 2024, 02:37

ER

A driver completed the first part of a trip at an average speed of 50

555-605 (Medium) | Distance and Speed Problems

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

Bunuel

11 Jun 2020, 01:47

13

9

4,544

by: bumpbot

03 Oct 2024, 06:10