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

79,076

by: thisisakr

16 Apr 2026, 11:46

ER

100 Hardest and easiest questions for DS as of April 2026

1, 2

Bunuel

01 Jan 2026, 05:45

857

24

188,730

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

488,292

by: bb

29 Aug 2025, 13:27

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

2,111

by: bumpbot

23 Sep 2024, 08:03

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

8,253

by: bumpbot

22 Sep 2024, 21:36

ER

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

705-805 (Hard) | Inequalities

705-805 (Hard) | Inequalities hide tags

gmatophobia

18 Feb 2024, 12:51

10

7

1,582

by: Manushya

22 Sep 2024, 12:49

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

4,149

by: unraveled

21 Sep 2024, 09:18

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

858

by: Bunuel

20 Sep 2024, 11:41

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

2,353

by: bumpbot

19 Sep 2024, 04:48

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

4,198

by: bumpbot

19 Sep 2024, 04:38

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

5,686

by: bumpbot

17 Sep 2024, 04:36

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

12,402

by: bumpbot

17 Sep 2024, 03:52

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

1,383

by: bumpbot

17 Sep 2024, 02:30

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

23,639

by: bumpbot

16 Sep 2024, 13:57

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

8,098

by: bumpbot

15 Sep 2024, 21:55

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

7,695

by: bumpbot

15 Sep 2024, 21:51

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

3,540

by: glagad

14 Sep 2024, 23:37

ER

Do more than 50% of the children in a certain group have

505-555 (Easy) | Overlapping Sets

505-555 (Easy) | Overlapping Sets hide tags

cmugeria

10 Sep 2010, 15:29

30

7

14,639

by: bumpbot

14 Sep 2024, 23:15

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

4,691

by: bumpbot

14 Sep 2024, 02:50

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

14,717

by: bumpbot

13 Sep 2024, 23:16

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

6,478

by: bumpbot

12 Sep 2024, 10:15

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

2,390

by: bumpbot

11 Sep 2024, 16:46

ER

Is q < 0?

655-705 (Hard) | Arithmetic

655-705 (Hard) | Arithmetic hide tags

Mo2men

28 Dec 2018, 21:46

5

3

3,035

by: bumpbot

07 Sep 2024, 08:58

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

12,349

by: bumpbot

07 Sep 2024, 03:06

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

1,333

by: bumpbot

07 Sep 2024, 02:39

ER

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

605-655 (Medium) | Number Properties

605-655 (Medium) | Number Properties hide tags

TheUltimateWinner

28 Sep 2020, 09:15

2

1,679

by: bumpbot

07 Sep 2024, 00:02

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

3,386

by: bumpbot

06 Sep 2024, 11:25

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

1,535

by: Bunuel

06 Sep 2024, 00:21

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

6,169

by: bumpbot

05 Sep 2024, 00:38

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

13,602

by: Bunuel

04 Sep 2024, 09:41

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

1,274

by: bumpbot

04 Sep 2024, 08:57

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

2,751

by: Ved22

04 Sep 2024, 00:15

ER

A hose fills half a bucket in 16 minutes.

805+ (Hard) | Work and Rate Problems

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

GianKR

19 Jul 2023, 15:00

20

5

5,059

by: Bunuel

03 Sep 2024, 06:53

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

4,994

by: bumpbot

02 Sep 2024, 13:59

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

1,734

by: siddhantvarma

02 Sep 2024, 10:06

ER

The Department of Environmental Protection measured the volume of wate

705-805 (Hard) | Statistics and Sets Problems

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

Bunuel

09 Feb 2017, 10:46

23

5

4,717

by: GMATBusters

02 Sep 2024, 02:36

ER

How old, rounded to the nearest year, was Jim in May 1989 ?

555-605 (Medium) | Word Problems

555-605 (Medium) | Word Problems hide tags

Bunuel

09 Nov 2021, 02:30

7

4

2,497

by: bumpbot

01 Sep 2024, 22:08

ER

In a city, only two leaders X and Y contested. The number of valid vot

805+ (Hard) | Percent and Interest Problems

805+ (Hard) | Percent and Interest Problems hide tags

Bunuel

26 Sep 2019, 04:29

8

3

2,879

by: rushimehta

01 Sep 2024, 07:37

ER

If x and y are positive, is √x+y>10?

605-655 (Medium) | Inequalities, Roots

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

Bunuel

11 May 2017, 03:08

13

4

6,444

by: GMATBusters

01 Sep 2024, 04:56

ER

If x is a negative integer greater than -10, is z greater than average

705-805 (Hard) | Number Properties

705-805 (Hard) | Number Properties hide tags

joylive

24 Nov 2012, 09:36

9

3

3,906

by: SatvikVedala

31 Aug 2024, 20:58

ER

A coin purse contains 13 coins, each worth 1, 5, 10, or 25 cents; the

805+ (Hard) | Word Problems

805+ (Hard) | Word Problems hide tags

Bunuel

01 May 2015, 02:20

33

6

7,427

by: bumpbot

31 Aug 2024, 03:42

ER

If N is a positive integer, is X*Y an even integer? (1) N = X/16 (2)

655-705 (Hard) | Number Properties

655-705 (Hard) | Number Properties hide tags

amanvermagmat

02 Apr 2018, 05:19

7

4

2,765

by: SatvikVedala

30 Aug 2024, 20:57

ER

What is the value of x? (1) |x+2| 4 (2) |x - 1| = 2x - 3

655-705 (Hard) | Absolute Values, Inequalities

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

nafuzzz

30 Aug 2024, 13:31

5

1

954

by: Bunuel

30 Aug 2024, 13:45

ER

If the vertices of a quadrilateral PQRS lie on the circumference of

705-805 (Hard) | Geometry

705-805 (Hard) | Geometry hide tags

joylive

11 Nov 2017, 05:13

66

9

14,915

by: Binod826

30 Aug 2024, 00:25

ER

The elements of Set X are defined by the formula...

505-555 (Easy) | Statistics and Sets Problems

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

GMATUser1928843

26 Jun 2022, 13:34

5

3

1,473

by: bumpbot

29 Aug 2024, 22:07

ER -1

If x and y are nonzero integers, what is the remainder when odd intege

655-705 (Hard) | Remainders

655-705 (Hard) | Remainders hide tags

Bunuel

27 Dec 2016, 09:05

7

5

3,082

by: CTaylor2324

29 Aug 2024, 14:00

ER

If x and y are positive integers, is (x + y)(x − y) a prime number?

505-555 (Easy) | Number Properties

505-555 (Easy) | Number Properties hide tags

Bunuel

21 Apr 2021, 03:00

9

4

2,739

by: bumpbot

28 Aug 2024, 11:30

ER

Is x is an integer? (1) x^2/2 is an integer (2) x^(1/2) is an integer

605-655 (Medium) | Number Properties

605-655 (Medium) | Number Properties hide tags

Bunuel

27 Feb 2023, 07:45

5

3

2,831

by: bumpbot

28 Aug 2024, 04:32

ER

At the beginning of January 2003, Lisa invested $10,000 in an account

Poor Quality

Poor Quality hide tags

Kavicogsci

27 Aug 2024, 20:01

1

1,060

by: Bunuel

28 Aug 2024, 00:28

ER

If 5^x = y, what is x?

555-605 (Medium) | Exponents

555-605 (Medium) | Exponents hide tags

Bunuel

04 Nov 2014, 10:03

21

8

9,225

by: Bunuel

27 Aug 2024, 23:45

ER

Is (p - 2)(q - 2) square of an integer?

655-705 (Hard) | Number Properties

655-705 (Hard) | Number Properties hide tags

kiran120680

29 Mar 2019, 12:42

14

4

3,209

by: NickelMue

27 Aug 2024, 12:08

ER

Is x/y^3 > 0? (1) x - y > 0 (2) xy > 0

555-605 (Medium) | Inequalities

555-605 (Medium) | Inequalities hide tags

Bunuel

01 Sep 2023, 08:00

2

3

1,094

by: Akshaynandurkar

27 Aug 2024, 11:15

ER

If q is an integer, is q/15 an integer?

505-555 (Easy) | Number Properties

505-555 (Easy) | Number Properties hide tags

Bunuel

06 Jan 2021, 06:31

1

3

2,600

by: bumpbot

26 Aug 2024, 08:57