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

80,158

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

189,112

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

488,870

by: bb

29 Aug 2025, 13:27

ER

a, b, c, and d are positive integers. If (a + b)(c d) = r, where

655-705 (Hard) | Number Properties

655-705 (Hard) | Number Properties hide tags

sambam

16 Jan 2013, 14:31

62

11

18,283

by: bumpbot

30 Jul 2025, 15:09

ER

If x and y are positive integers, is x a prime number?

805+ (Hard) | Absolute Values +2 tags

805+ (Hard) | Absolute Values, Algebra, Inequalities hide tags

bekerman

22 May 2014, 17:42

180

18

23,392

by: bumpbot

30 Jul 2025, 09:14

ER

Is x = |y - z|? (1) x = y - z (2) y > z

605-655 (Medium) | Absolute Values

605-655 (Medium) | Absolute Values hide tags

rxs0005

21 Sep 2010, 07:23

19

12

6,925

by: bumpbot

30 Jul 2025, 09:03

ER

What was the average number of miles per gallon of gasoline for a car

Sub 505 (Easy) | Word Problems

Sub 505 (Easy) | Word Problems hide tags

Bunuel

29 Jul 2025, 22:00

4

565

by: Missinga

30 Jul 2025, 08:15

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If n is a positive integer, what is the greatest common factor

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

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

Mo2men

01 Aug 2018, 20:50

66

9

9,421

by: bumpbot

30 Jul 2025, 03:06

ER

What is the value of x - y?

555-605 (Medium) | Algebra

555-605 (Medium) | Algebra hide tags

Bunuel

08 Jun 2015, 08:54

25

14

8,035

by: bumpbot

29 Jul 2025, 23:32

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Is x^y > 0 ? (1) y = 2 (2) x is an integer

605-655 (Medium) | Inequalities, Number Properties

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

Bunuel

23 Sep 2015, 03:36

38

9

7,643

by: bumpbot

29 Jul 2025, 23:30

ER

Set J consists of terms {2, 7, 12, 17, a}. Is a > 7? (1) a is the

505-555 (Easy) | Statistics and Sets Problems

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

1, 2

Bunuel

07 Apr 2020, 05:26

13

21

6,768

by: bumpbot

29 Jul 2025, 23:11

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If y is an integer and y = |x| + x, is y = 0?

655-705 (Hard) | Absolute Values, Inequalities

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

Fijisurf

14 Dec 2010, 22:03

172

8

42,271

by: bumpbot

29 Jul 2025, 23:04

ER

Rosy and Daisy bought some books, pens, and pencils. Out of the total

705-805 (Hard) | Word Problems

705-805 (Hard) | Word Problems hide tags

Nums99

29 May 2024, 01:28

18

3

3,723

by: bumpbot

29 Jul 2025, 19:52

ER

If d is the product of exactly two distinct prime factors, what is the

655-705 (Hard) | Number Properties

655-705 (Hard) | Number Properties hide tags

Bunuel

29 Apr 2022, 01:30

6

4

3,671

by: bumpbot

29 Jul 2025, 12:58

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If a and b are positive integers, is (ab)^b+1 − a^a+1 odd? (1) 2a + 3

805+ (Hard) | Exponents, Number Properties

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

Bunuel

17 Nov 2021, 04:30

7

3

3,342

by: bumpbot

29 Jul 2025, 10:20

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If r is not equal to 0, is r^2/|r| < 1? (1) r > -1 (2)

555-605 (Medium) | Absolute Values, Inequalities

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

kylexy

27 Jun 2010, 12:43

60

13

22,333

by: bumpbot

29 Jul 2025, 10:04

ER

A newsstand sells newspapers H and G and J. What was the total number

Sub 505 (Easy) | Word Problems

Sub 505 (Easy) | Word Problems hide tags

Bunuel

28 Jul 2025, 22:00

3

2

458

by: Missinga

29 Jul 2025, 08:43

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If a, b, and c are prime, is abc odd?

505-555 (Easy) | Arithmetic

505-555 (Easy) | Arithmetic hide tags

Kaushik786

20 Sep 2021, 07:08

2

3,040

by: bumpbot

29 Jul 2025, 08:28

ER

There are two solutions, A and B of spirit and water. The ratio of spi

605-655 (Medium) | Mixture Problems

605-655 (Medium) | Mixture Problems hide tags

Bunuel

28 Sep 2021, 01:30

27

5

6,652

by: Samiksha2610

29 Jul 2025, 06:47

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

8,803

by: bumpbot

29 Jul 2025, 06:42

In a certain sports club, at least 50 members play cricket, and 70

805+ (Hard) | Overlapping Sets

805+ (Hard) | Overlapping Sets hide tags

asdasdsf

28 Apr 2024, 22:38

30

3

4,830

by: bumpbot

29 Jul 2025, 06:06

ER

What is the total price of one copy of book X and two copies of book Y

505-555 (Easy) | Algebra, Word Problems

505-555 (Easy) | Algebra, Word Problems hide tags

Bunuel

28 Jul 2025, 22:00

5

2

795

by: poojaarora1818

29 Jul 2025, 03:02

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Is |xy| > xy? (1) (x^2y^2)^(1/2) = xy (2) |x| + |y| = x + y

605-655 (Medium) | Absolute Values, Inequalities

605-655 (Medium) | Absolute Values, Inequalities hide tags

Bunuel

13 Sep 2017, 21:48

38

16

7,178

by: bumpbot

29 Jul 2025, 02:43

ER

Is xy < 1? (1) |x|y ≠ x|y| (2) (x − y)^2/(x + y)^2 = 1

655-705 (Hard) | Absolute Values, Inequalities

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

Shrey08

01 Jun 2021, 08:33

10

2

3,350

by: bumpbot

29 Jul 2025, 02:39

ER

A store sells two types of birdfeeder: Alphas and Bravos.

805+ (Hard) | Word Problems

805+ (Hard) | Word Problems hide tags

Maxswe

09 Dec 2012, 13:38

62

11

8,305

by: wang3022

29 Jul 2025, 02:11

ER

If x and y are integers and xy does not equal 0, is xy < 0?

605-655 (Medium) | Algebra, Inequalities

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

Bunuel

19 Dec 2019, 04:07

17

5

14,686

by: bumpbot

29 Jul 2025, 01:38

ER

There are only apples and oranges in a box. What is the probability

Sub 505 (Easy) | Probability

Sub 505 (Easy) | Probability hide tags

Bunuel

01 Sep 2023, 01:30

5

2

2,928

by: bumpbot

29 Jul 2025, 00:30

ER

Does Charles weigh more than Dianne?

555-605 (Medium) | Word Problems

555-605 (Medium) | Word Problems hide tags

rjaimer1

13 Feb 2021, 16:33

11

5

4,596

by: bumpbot

28 Jul 2025, 23:24

ER

What were the individual prices of the vases that an antique dealer bo

Sub 505 (Easy) | Word Problems

Sub 505 (Easy) | Word Problems hide tags

eybrj2

29 Mar 2012, 21:28

23

2

9,577

by: bumpbot

28 Jul 2025, 23:17

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

6,406

by: bumpbot

28 Jul 2025, 23:16

ER

A certain calculator is able to display at most 10 digits, so that any

655-705 (Hard) | Word Problems

655-705 (Hard) | Word Problems hide tags

Bunuel

08 Oct 2019, 09:19

10

4

6,605

by: bumpbot

28 Jul 2025, 22:47

If x is even and b is odd, is

805+ (Hard) | Exponents, Number Properties

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

gmatophobia

05 May 2023, 11:25

8

5

1,480

by: gmatophobia

28 Jul 2025, 22:44

ER

On a particular tour at the zoo, the ratio of the number of men to the

605-655 (Medium) | Fractions and Ratios, Word Problems

605-655 (Medium) | Fractions and Ratios, Word Problems hide tags

Bunuel

24 Apr 2025, 00:30

4

1,166

by: agrasan

28 Jul 2025, 22:17

ER

Jim had four tests, with each grade being an integer. Did Jim score 10

505-555 (Easy) | Statistics and Sets Problems

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

Bunuel

27 Jul 2025, 22:00

3

580

by: Missinga

28 Jul 2025, 17:59

ER

Each of the letters in the table above represents one of the numbers 1

605-655 (Medium) | Graphs and Illustrations, Number Properties

605-655 (Medium) | Graphs and Illustrations, Number Properties hide tags

GMATBusters

15 Dec 2018, 10:26

19

9

6,744

by: bumpbot

28 Jul 2025, 13:34

ER

In a certain conference room each row of chairs has the same number of

555-605 (Medium) | Word Problems

555-605 (Medium) | Word Problems hide tags

enigma123

20 Mar 2012, 10:30

164

9

53,563

by: bumpbot

28 Jul 2025, 13:01

ER

What was a certain company's revenue last year?

Sub 505 (Easy) | Percent and Interest Problems, Word Problems

Sub 505 (Easy) | Percent and Interest Problems, Word Problems hide tags

Bunuel

03 Mar 2020, 03:46

7

3

7,159

by: APram

28 Jul 2025, 12:42

ER

How many of the three different positive integers a, b, and c are divi

655-705 (Hard) | Multiples and Factors

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

Bunuel

02 Mar 2022, 03:00

2

3

1,982

by: svsivakrishna

28 Jul 2025, 12:33

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

7,809

by: bumpbot

28 Jul 2025, 11:31

ER

The cost of each adult's ticket for a certain concert was $3

555-605 (Medium) | Statistics and Sets Problems

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

wshaffer

18 Feb 2014, 01:14

31

9

18,275

by: bumpbot

28 Jul 2025, 11:21

ER

Ann bought five different kinds of fruit: apples, oranges, pears

505-555 (Easy) | Fractions and Ratios, Word Problems

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

ajaym28

26 Oct 2014, 06:16

28

5

18,285

by: bumpbot

28 Jul 2025, 11:10

ER

Set A = {a, b, c} and has a median of b. Is the average of a and c gre

555-605 (Medium) | Statistics and Sets Problems

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

Bunuel

10 Aug 2018, 03:43

4

9

5,022

by: bumpbot

28 Jul 2025, 11:09

ER

At a bakery, cakes are sold every day for a certain number of days. If

805+ (Hard) | Statistics and Sets Problems

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

Bunuel

14 May 2017, 10:51

27

8

9,513

by: bumpbot

28 Jul 2025, 11:01

ER

If b = 3a, is the average (arithmetic mean) of the five terms in the

605-655 (Medium) | Inequalities, Statistics and Sets Problems

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

Bunuel

11 Feb 2022, 02:30

16

6

4,181

by: bumpbot

28 Jul 2025, 11:00

ER

The average of several test scores is 80. After that average was calcu

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

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

Bunuel

12 Feb 2015, 07:08

12

5

11,929

by: bumpbot

28 Jul 2025, 10:59

ER

If the arithmetic mean of n consecutive odd integers is 20, what is

605-655 (Medium) | Statistics and Sets Problems

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

Bunuel

19 Aug 2015, 03:05

119

11

13,872

by: bumpbot

28 Jul 2025, 10:57

ER

A recent lunch meeting at a certain club was attended by members and

Sub 505 (Easy) | Algebra, Word Problems

Sub 505 (Easy) | Algebra, Word Problems hide tags

gmat1393

28 Jul 2025, 10:55

9

3

9,256

by: bumpbot

28 Jul 2025, 10:53

ER

If w < x < y < z, is the average (arithmetic mean) of w, x, y, and z

655-705 (Hard) | Algebra, Inequalities

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

Bunuel

06 Dec 2019, 06:05

19

3

10,108

by: deletus

28 Jul 2025, 10:48

ER

A marzipan factory has two machines producing marzipan. Every day, the

605-655 (Medium) | Word Problems

605-655 (Medium) | Word Problems hide tags

Bunuel

23 Jan 2023, 02:30

4

2

1,360

by: bumpbot

28 Jul 2025, 09:43

ER

Each of the 8 numbers s, t, u, v, w, x, y and z is positive. Is the av

605-655 (Medium) | Word Problems

605-655 (Medium) | Word Problems hide tags

Bunuel

07 May 2015, 03:20

6

3

5,003

by: bumpbot

28 Jul 2025, 07:44

ER

Is x > y?

555-605 (Medium) | Absolute Values

555-605 (Medium) | Absolute Values hide tags

mojorising800

05 Jul 2011, 02:46

7

4

4,019

by: bumpbot

28 Jul 2025, 06:48

ER

If |a b| = 6 and |b c| = 15, then what is the value of |c|?

805+ (Hard) | Absolute Values

805+ (Hard) | Absolute Values hide tags

Bunuel

28 Mar 2023, 07:45

6

3

1,377

by: bumpbot

28 Jul 2025, 05:18

ER

If x is an integer, is (3x - y)^(1/2) = (2x - 2y)^(1/2)?

805+ (Hard) | Algebra

805+ (Hard) | Algebra hide tags

07tiger

08 Nov 2019, 07:22

5

2

1,275

by: bumpbot

28 Jul 2025, 05:02