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

79,670

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

188,966

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

488,663

by: bb

29 Aug 2025, 13:27

ER

Cerenity and Jas rented a jet ski for an afternoon. The rental fee for

555-605 (Medium) | Word Problems

555-605 (Medium) | Word Problems hide tags

Bunuel

25 Apr 2018, 23:30

4

6

2,075

by: GMATinsight

20 Jul 2025, 07:53

ER

What was the median of the daily numbers of phone calls received at a

505-555 (Easy) | Statistics and Sets Problems

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

houston1980

01 Jul 2023, 09:44

63

3

16,239

by: bumpbot

20 Jul 2025, 09:18

ER

Out of 25 Gryffindor students, 16 play chess, and 11 play quidditch.

605-655 (Medium) | Overlapping Sets

605-655 (Medium) | Overlapping Sets hide tags

Bunuel

13 Apr 2026, 06:55

20

3

4,332

by: bumpbot

20 Jul 2025, 11:20

ER

In a certain school district, math teachers are considered qualified

605-655 (Medium) | Overlapping Sets

605-655 (Medium) | Overlapping Sets hide tags

Bunuel

27 Oct 2021, 08:00

13

4

3,785

by: bumpbot

20 Jul 2025, 12:38

ER

What is the value of x? (1) |2x − 1| = 3x + 6 (2) x^2 = 1

655-705 (Hard) | Absolute Values, Algebra

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

Bunuel

24 Apr 2017, 04:21

39

8

8,408

by: bumpbot

20 Jul 2025, 17:49

ER

Is x >= 0 ?

655-705 (Hard) | Absolute Values, Algebra

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

KrishnaK

17 Jan 2011, 11:12

10

4

6,263

by: bumpbot

20 Jul 2025, 19:19

ER

What is the average of A, B, and C?

655-705 (Hard) | Algebra

655-705 (Hard) | Algebra hide tags

ocavon

25 Jun 2015, 09:25

15

2

8,122

by: bumpbot

20 Jul 2025, 23:20

ER

How many integers are greater than x, but less than y?

605-655 (Medium) | Number Properties

605-655 (Medium) | Number Properties hide tags

Bunuel

25 Nov 2014, 08:26

21

8

8,233

by: bumpbot

21 Jul 2025, 03:29

ER

On a recent test taken by 21 students, each students test score was

555-605 (Medium) | Statistics and Sets Problems

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

houston1980

01 Jul 2023, 09:23

110

3

24,280

by: bumpbot

21 Jul 2025, 07:19

ER

On January 1st, Olivia deposited a certain amount of money into Bank A

555-605 (Medium) | Percent and Interest Problems

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

Bunuel

14 Apr 2026, 03:53

2

4

1,404

by: LeoLong2

21 Jul 2025, 09:07

ER

Karina´s mother has already bought T attraction tickets to distribute

555-605 (Medium) | Algebra, Word Problems

555-605 (Medium) | Algebra, Word Problems hide tags

fskilnik

05 Mar 2019, 09:33

5

2

1,641

by: bumpbot

22 Jul 2025, 01:42

ER

In the rectangular coordinates in the figure above, what is the value

505-555 (Easy) | Coordinate Plane

505-555 (Easy) | Coordinate Plane hide tags

Bunuel

16 Jun 2021, 03:30

2

4

2,939

by: bumpbot

22 Jul 2025, 07:05

ER

GMAT Club Olympics 2024 (Day 4): What is the length of a train

655-705 (Hard) | Distance and Speed Problems

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

1, 2...5, 6

Bunuel

11 Jul 2024, 07:00

89

105

10,817

by: bumpbot

22 Jul 2025, 07:44

ER

Two employees each received raises. Which of the two, Scott or Alex

Sub 505 (Easy) | Word Problems

Sub 505 (Easy) | Word Problems hide tags

Bunuel

21 Jul 2025, 22:00

7

5

634

by: Souradeep17

22 Jul 2025, 10:11

ER

Eloises aquarium contains six tropical fish. If the largest fish is 4

505-555 (Easy) | Word Problems

505-555 (Easy) | Word Problems hide tags

Bunuel

21 Jul 2025, 22:00

6

3

568

by: Souradeep17

22 Jul 2025, 10:48

ER

If m is the arithmetic mean (average) of 4 integers a, b, c, and d and

655-705 (Hard) | Statistics and Sets Problems

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

Bunuel

10 Mar 2016, 04:56

17

3

3,781

by: bumpbot

23 Jul 2025, 00:33

ER

The cards in a deck are numbered consecutively from 1 to 20. If some

605-655 (Medium) | Probability

605-655 (Medium) | Probability hide tags

Bunuel

01 Jul 2018, 20:57

10

2

3,450

by: bumpbot

23 Jul 2025, 00:51

ER

If x and y are positive integers, what is the greatest common factor

705-805 (Hard) | Multiples and Factors

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

Bunuel

17 May 2018, 05:52

24

8

5,327

by: bumpbot

23 Jul 2025, 06:06

ER

In a class of 80 students at least 40 participated in both cricket and

655-705 (Hard) | Overlapping Sets

655-705 (Hard) | Overlapping Sets hide tags

Bunuel

20 May 2024, 01:30

9

2

2,399

by: bumpbot

23 Jul 2025, 11:13

ER

If a, b, and c are positive integers, and a is a multiple of 3

705-805 (Hard) | Multiples and Factors

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

CrackverbalGMAT

26 May 2019, 01:17

7

4

3,223

by: bumpbot

24 Jul 2025, 08:28

ER

If 25% of a company's employees are women older than 30, what percent

605-655 (Medium) | Overlapping Sets, Percent and Interest Problems

605-655 (Medium) | Overlapping Sets, Percent and Interest Problems hide tags

Bunuel

23 Jul 2025, 13:38

34

6

20,695

by: harsha77

24 Jul 2025, 09:43

ER

The sequence a1,a2,,an, is such that an=(an1)(an3) for

655-705 (Hard) | Sequences

655-705 (Hard) | Sequences hide tags

Bunuel

28 Jan 2015, 07:58

20

10

12,081

by: bumpbot

24 Jul 2025, 12:30

ER

For how many days are rations expected to last in a camp of 100 soldie

705-805 (Hard) | Work and Rate Problems

705-805 (Hard) | Work and Rate Problems hide tags

Bunuel

05 Jul 2017, 00:41

26

7

5,033

by: bumpbot

25 Jul 2025, 07:40

ER

How many kiloliters of water are in a reservoir?

655-705 (Hard) | Word Problems

655-705 (Hard) | Word Problems hide tags

Bunuel

17 Mar 2025, 00:30

5

1,405

by: Harshita2003

25 Jul 2025, 13:52

ER

The average number of students per class at School X is 25 and the ave

655-705 (Hard) | Word Problems

655-705 (Hard) | Word Problems hide tags

CLIMBTHELADDER

10 Jan 2019, 03:06

37

5

9,391

by: bumpbot

25 Jul 2025, 23:28

ER

Jane and Thomas each have more than 700 stamps. What is the ratio of

705-805 (Hard) | Word Problems

705-805 (Hard) | Word Problems hide tags

Bunuel

24 Apr 2024, 01:30

13

2

2,155

by: bumpbot

25 Jul 2025, 23:38

ER

If a < b, is a < c?

555-605 (Medium) | Arithmetic, Number Properties

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

EMPOWERgmatRichC

22 Oct 2019, 23:17

5

4,023

by: bumpbot

26 Jul 2025, 05:22

ER

A joint debating session was attended by 50 students from a certain ju

655-705 (Hard) | Probability

655-705 (Hard) | Probability hide tags

Bunuel

13 Nov 2019, 02:40

9

2

6,203

by: bumpbot

26 Jul 2025, 08:13

ER

If x, y, and z are positive integers, where x is an odd number and

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

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

Bunuel

21 Jun 2023, 01:31

10

4

2,208

by: bumpbot

27 Jul 2025, 03:25

ER

K is a data set containing five real numbers. If A is the arithmetic

805+ (Hard) | Statistics and Sets Problems

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

Raksat

07 Aug 2018, 10:22

14

5

2,426

by: srik410

27 Jul 2025, 05:20

ER

Is x 3? (1) |x| = 3 (2) x is positive.

Sub 505 (Easy) | Absolute Values, Algebra

Sub 505 (Easy) | Absolute Values, Algebra hide tags

Bunuel

30 May 2022, 01:31

2

2,116

by: bumpbot

27 Jul 2025, 12:41

ER

If the digit n is the thousandths digit in the decimal d = 0.75n9, wha

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

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

AbdurRakib

22 Jul 2016, 13:08

20

11

6,120

by: bumpbot

27 Jul 2025, 22:03

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

1,242

by: bumpbot

28 Jul 2025, 05:02

ER

Is x > y?

555-605 (Medium) | Absolute Values

555-605 (Medium) | Absolute Values hide tags

mojorising800

05 Jul 2011, 02:46

7

4

4,016

by: bumpbot

28 Jul 2025, 06:48

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

4,998

by: bumpbot

28 Jul 2025, 07:44

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

118

11

13,855

by: bumpbot

28 Jul 2025, 10:57

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

4,170

by: bumpbot

28 Jul 2025, 11:00

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

18,268

by: bumpbot

28 Jul 2025, 11:10

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

7,150

by: APram

28 Jul 2025, 12:42

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

1,165

by: agrasan

28 Jul 2025, 22:17

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

6,591

by: bumpbot

28 Jul 2025, 22:47

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

9,567

by: bumpbot

28 Jul 2025, 23:17

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

4,591

by: bumpbot

28 Jul 2025, 23:24

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

2,921

by: bumpbot

29 Jul 2025, 00:30

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

3,347

by: bumpbot

29 Jul 2025, 02:39

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

6,639

by: Samiksha2610

29 Jul 2025, 06:47

ER

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

3,035

by: bumpbot

29 Jul 2025, 08:28

ER

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

3,335

by: bumpbot

29 Jul 2025, 10:20

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

3,713

by: bumpbot

29 Jul 2025, 19:52

ER

If X is a positive integer, what is the remainder when X^2 is divided

655-705 (Hard) | Remainders

655-705 (Hard) | Remainders hide tags

firas92

19 Jun 2019, 07:17

11

4

3,861

by: bumpbot

31 Jul 2025, 06:41