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

178

15

79,035

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

188,703

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

488,237

by: bb

29 Aug 2025, 13:27

ER

Is x = 5?

605-655 (Medium) | Algebra

605-655 (Medium) | Algebra hide tags

Bunuel

14 Aug 2017, 06:18

5

4

2,685

by: antztheman

26 Aug 2017, 03:35

ER

Is x = y?

555-605 (Medium) | Absolute Values, Algebra

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

Bunuel

14 Aug 2017, 06:18

3

5

2,243

by: ScottTargetTestPrep

24 Aug 2017, 13:36

ER

If x - y < 0, what is the value of x + y?

505-555 (Easy) | Algebra, Inequalities

505-555 (Easy) | Algebra, Inequalities hide tags

Bunuel

14 Aug 2017, 07:58

4

6

2,539

by: bumpbot

19 May 2020, 16:27

ER

What is x ? (1) x^2 - 1 = x + 1 (2) x + 3 is a prime number

605-655 (Medium) | Algebra, Number Properties

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

Bunuel

14 Aug 2017, 09:22

9

8

5,179

by: Bunuel

07 May 2023, 06:59

ER

If the average (arithmetic mean) of 7 numbers is 21, what is the stand

555-605 (Medium) | Statistics and Sets Problems

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

MathRevolution

15 Aug 2017, 01:30

8

4

3,174

by: egmat

19 Feb 2026, 06:33

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If x and z are positive integers, is x^2 - z^2 odd?

505-555 (Easy) | Number Properties

505-555 (Easy) | Number Properties hide tags

Skywalker18

15 Aug 2017, 13:04

11

6

4,364

by: bumpbot

25 Apr 2024, 01:34

ER

Is the total profit from the sales of 3 products greater than $6? 1) T

555-605 (Medium) | Inequalities

555-605 (Medium) | Inequalities hide tags

MathRevolution

16 Aug 2017, 02:40

2

5

2,229

by: shivam10

14 Oct 2022, 23:03

ER

If a and b are consecutive even integers, is a > b?

605-655 (Medium) | Number Properties

605-655 (Medium) | Number Properties hide tags

Bunuel

21 Aug 2017, 06:02

8

7

6,503

by: bumpbot

15 Aug 2025, 21:42

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If n is a positive integer, what is the remainder when 3^n is divided

505-555 (Easy) | Exponents, Remainders

505-555 (Easy) | Exponents, Remainders hide tags

Bunuel

21 Aug 2017, 06:15

23

5

6,766

by: BrushMyQuant

06 Oct 2024, 06:40

ER

If 0 < a < b is a < 10?

705-805 (Hard) | Inequalities

705-805 (Hard) | Inequalities hide tags

Bunuel

21 Aug 2017, 06:41

9

6

2,447

by: bumpbot

26 Dec 2024, 03:39

At a donation meeting yesterday, each of N persons donated $100

555-605 (Medium) | Algebra, Arithmetic

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

thalcantero

21 Aug 2017, 15:47

2

3,178

by: bumpbot

02 Feb 2024, 23:21

ER

Is the radius of circle with center O an integer?

505-555 (Easy) | Geometry

505-555 (Easy) | Geometry hide tags

Bunuel

21 Aug 2017, 23:38

2

4

2,112

by: bumpbot

11 Nov 2018, 07:57

ER

What is the value of x?

555-605 (Medium) | Geometry

555-605 (Medium) | Geometry hide tags

Bunuel

22 Aug 2017, 01:43

2

2,235

by: septwibowo

22 Aug 2017, 04:17

ER

If y is positive, what is the value of x?

655-705 (Hard) | Geometry

655-705 (Hard) | Geometry hide tags

Bunuel

22 Aug 2017, 01:43

3

4

2,637

by: bumpbot

24 Mar 2025, 14:28

ER

What is the value of integer k?

505-555 (Easy) | Inequalities

505-555 (Easy) | Inequalities hide tags

Bunuel

22 Aug 2017, 03:00

2

9

3,097

by: CEdward

14 Jan 2021, 22:24

ER

If integer x is greater than 0 but less than 10 and k = x^9, what is t

555-605 (Medium) | Fractions and Ratios, Inequalities

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

Bunuel

22 Aug 2017, 03:19

3

6

4,215

by: CEdward

14 Jan 2021, 22:22

ER

What is the value of integer k?

Sub 505 (Easy) | Number Properties

Sub 505 (Easy) | Number Properties hide tags

Bunuel

22 Aug 2017, 03:20

4

2,642

by: Luckisnoexcuse

23 Aug 2017, 03:22

ER

If p and q are positive integers, is p > q?

705-805 (Hard) | Inequalities

705-805 (Hard) | Inequalities hide tags

pushkarajnjadhav

22 Aug 2017, 13:33

9

3

4,249

by: bumpbot

25 Jan 2026, 00:19

ER

x*y is a prime number greater than 2 where x and y are positive intege

705-805 (Hard) | Number Properties

705-805 (Hard) | Number Properties hide tags

GMATinsight

26 Aug 2017, 06:27

5

3

2,059

by: bumpbot

03 Jan 2026, 05:25

ER

A box contains only red chips, green chips and blue chips. If a chip i

505-555 (Easy) | Probability

505-555 (Easy) | Probability hide tags

fitzpratik

27 Aug 2017, 19:51

7

8,397

by: bumpbot

22 Dec 2022, 12:11

ER

In the equation x^2 + mx + n = 0, x is a variable and m and n are cons

555-605 (Medium) | Algebra

555-605 (Medium) | Algebra hide tags

Bunuel

28 Aug 2017, 03:01

14

9

13,515

by: RahulJain293

03 Jan 2023, 10:05

ER

If xy 0 and x^(y + 1) = 2x^y - 1, what is the value of x?

805+ (Hard) | Algebra, Exponents

805+ (Hard) | Algebra, Exponents hide tags

Bunuel

28 Aug 2017, 03:25

43

8

5,962

by: bumpbot

14 Jun 2025, 11:42

ER

If x 0, what is the value of x?

805+ (Hard) | Absolute Values

805+ (Hard) | Absolute Values hide tags

Bunuel

28 Aug 2017, 03:27

25

12

9,974

by: Bunuel

18 Oct 2021, 09:52

ER

If (y^2 - 1)^(1/2) = 4, what is the value of y?

655-705 (Hard) | Algebra +2 tags

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

Bunuel

28 Aug 2017, 03:48

18

9

7,414

by: bumpbot

19 Jan 2023, 05:30

ER

Martha and Susan have an equal number of cats. If Martha gives one of

555-605 (Medium) | Word Problems

555-605 (Medium) | Word Problems hide tags

Bunuel

28 Aug 2017, 03:59

3

5

1,730

by: bumpbot

29 Jul 2024, 23:22

ER

If x and y are positive integers and x < y, what is the value of x?

555-605 (Medium) | Algebra

555-605 (Medium) | Algebra hide tags

Bunuel

28 Aug 2017, 04:03

2

9

2,090

by: Bunuel

28 Aug 2017, 21:41

ER

Is x an integer ? (1) 2x + 1 is an integer (2) 5x – 1 is an integer

555-605 (Medium) | Number Properties

555-605 (Medium) | Number Properties hide tags

Bunuel

28 Aug 2017, 04:06

10

8

3,444

by: MathRevolution

28 Sep 2020, 02:58

ER

The probability that event A occurs is 0.5 and the probability that ev

655-705 (Hard) | Probability

655-705 (Hard) | Probability hide tags

MathRevolution

28 Aug 2017, 23:56

15

3

6,949

by: egmat

10 Feb 2026, 03:12

ER

Last year Luis invested x dollars for one year, half at 8 percent simp

655-705 (Hard) | Percent and Interest Problems

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

Bunuel

29 Aug 2017, 09:29

21

4

7,870

by: devdattakhoche

14 May 2025, 12:27

ER

Is p > q ? (1) p^2 > q^2 (2) p^3 > q^3

505-555 (Easy) | Inequalities

505-555 (Easy) | Inequalities hide tags

saikiranjadav

15 Oct 2022, 08:49

10

4

13,170

by: bumpbot

15 Oct 2021, 18:24

ER

In how many ways can N! be written as the product of 2 integers?

Poor Quality

Poor Quality hide tags

gmatsam123

29 Aug 2017, 21:38

2

1

1,812

by: Bunuel

29 Aug 2017, 21:48

ER

In a sequence of numbers in which each term after the first term is 1

505-555 (Easy) | Sequences

505-555 (Easy) | Sequences hide tags

Bunuel

30 Aug 2017, 06:02

15

6

10,852

by: bumpbot

02 Aug 2024, 02:21

ER

△ is one operation of addition, subtraction, multiplication, or divisi

Sub 505 (Easy) | Functions and Custom Characters

Sub 505 (Easy) | Functions and Custom Characters hide tags

MathRevolution

31 Aug 2017, 01:24

1

5

2,256

by: kapstone1996

04 Dec 2018, 09:33

ER

If z is a positive integer and r is the remainder when z^2 + 2z + 4 is

805+ (Hard) | Remainders

805+ (Hard) | Remainders hide tags

Bunuel

31 Aug 2017, 23:14

98

15

8,825

by: ManifestDreamMBA

10 Feb 2025, 06:58

ER

If 5^m = 25^n, what is m?

505-555 (Easy) | Algebra, Exponents

505-555 (Easy) | Algebra, Exponents hide tags

Bunuel

03 Sep 2017, 06:19

2

1,736

by: Madhavi1990

06 Sep 2017, 13:18

ER

If y^k/y^5k = m, what is k?

805+ (Hard) | Exponents

805+ (Hard) | Exponents hide tags

Bunuel

03 Sep 2017, 06:21

50

15

5,942

by: bumpbot

24 Mar 2022, 03:34

ER

What is the value of x^2 – y^2 ?

555-605 (Medium) | Algebra

555-605 (Medium) | Algebra hide tags

Bunuel

03 Sep 2017, 06:23

11

5

5,511

by: Solenja

19 Jun 2022, 21:40

ER

What is the value of a^4 – b^4 ?

555-605 (Medium) | Algebra

555-605 (Medium) | Algebra hide tags

Bunuel

03 Sep 2017, 06:25

5

4

2,082

by: sasyaharry

24 Sep 2017, 11:08

ER

What is the value of a + b ?

555-605 (Medium) | Algebra

555-605 (Medium) | Algebra hide tags

Bunuel

03 Sep 2017, 06:26

8

4

1,982

by: bumpbot

13 Nov 2018, 08:59

ER

If the Lincoln Library's total expenditure for books, periodicals, and

505-555 (Easy) | Word Problems

505-555 (Easy) | Word Problems hide tags

Bunuel

05 Sep 2017, 00:02

16

4

10,938

by: AdarshSambare

17 Sep 2025, 03:41

ER

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

505-555 (Easy) | Algebra

505-555 (Easy) | Algebra hide tags

Bunuel

05 Sep 2017, 00:04

1

2

1,592

by: Kinshook

10 Jul 2019, 22:27

ER

If S is a data set of three numbers x, y and z, is the range of the nu

605-655 (Medium) | Statistics and Sets Problems

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

Bunuel

05 Sep 2017, 00:18

1

3

2,097

by: Mehemmed

10 Sep 2017, 01:01

ER

Is x a positive number? (1) (x – 2)^2 > 2 (2) 2^x > 3^x

555-605 (Medium) | Exponents, Inequalities

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

Bunuel

05 Sep 2017, 01:30

3

7

3,448

by: bumpbot

17 Feb 2024, 02:25

ER

If r and s are nonzero integers, is r/s an integer ?

555-605 (Medium) | Algebra, Number Properties

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

Bunuel

05 Sep 2017, 04:52

3

2

1,759

by: QuantMadeEasy

28 Dec 2017, 21:36

ER

If x and y are positive integers, is x a multiple of y?

655-705 (Hard) | Multiples and Factors

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

sahuamit91

05 Sep 2017, 10:40

61

8

9,793

by: bumpbot

03 Aug 2025, 06:27

ER

Does ay = –5 – by? (1) a = b (2) a + b = y

655-705 (Hard) | Algebra

655-705 (Hard) | Algebra hide tags

Bunuel

05 Sep 2017, 23:26

2

5

2,162

by: bumpbot

30 Aug 2022, 09:17

ER

If (xy)^(1/2) = 0, what is the value of x ?

555-605 (Medium) | Algebra

555-605 (Medium) | Algebra hide tags

Bunuel

05 Sep 2017, 23:30

4

2

2,300

by: CrackverbalGMAT

28 Jun 2019, 08:21

ER

What is the value of x in 10, 13, 15, 17, and x? 1) The median of them

555-605 (Medium) | Statistics and Sets Problems

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

MathRevolution

06 Sep 2017, 01:30

3

2,104

by: Arro44

02 May 2019, 03:40

ER

If y + 40x + 2 = 0, what is the value of xy?

505-555 (Easy) | Algebra

505-555 (Easy) | Algebra hide tags

rocker007

06 Sep 2017, 09:31

3

7

5,055

by: bumpbot

20 Jan 2024, 05:13

ER

Is x > y? (1) x + c > y + c (2) xc > yc

555-605 (Medium) | Inequalities

555-605 (Medium) | Inequalities hide tags

Bunuel

07 Sep 2017, 23:41

1

3

2,072

by: Kinshook

09 May 2020, 20:21