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

176

15

78,802

by: thisisakr

16 Apr 2026, 11:46

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100 Hardest and easiest questions for DS as of March 2026

1, 2

Bunuel

01 Jan 2026, 05:45

856

24

188,572

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

488,001

by: bb

29 Aug 2025, 13:27

ER

The students at a school took a math exam. Is the average (arithmetic

505-555 (Easy) | Statistics and Sets Problems

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

MathRevolution

25 Apr 2018, 00:35

3

1,470

by: MathRevolution

27 Apr 2018, 01:08

ER

40% of the students at a school take a math class and 60% of the schoo

Poor Quality

Poor Quality hide tags

MathRevolution

08 May 2018, 02:51

2

5

2,633

by: MathRevolution

10 May 2018, 07:50

ER

abc0 is a positive, four-digit integer, where a, b and c are 1-digit

555-605 (Medium) | Number Properties

555-605 (Medium) | Number Properties hide tags

MathRevolution

10 May 2018, 07:57

1

3

1,570

by: MathRevolution

13 May 2018, 18:40

ER

What is the range of the 5 numbers x, y, 10, 15, and 20?

505-555 (Easy) | Statistics and Sets Problems

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

MathRevolution

11 May 2018, 01:26

1

5

2,326

by: ScottTargetTestPrep

14 May 2018, 16:59

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Katrina draws a regular n-sided polygon. What is the value of n?

555-605 (Medium) | Geometry

555-605 (Medium) | Geometry hide tags

MathRevolution

15 May 2018, 02:41

2

4

2,095

by: MathRevolution

17 May 2018, 01:39

ER

Is 16 contained in the set S?

555-605 (Medium) | Arithmetic

555-605 (Medium) | Arithmetic hide tags

MathRevolution

22 Aug 2016, 20:00

3

5

2,508

by: bumpbot

06 Jun 2018, 03:03

ER

If gcd(m,n) is the greatest common divisor of m and n, then n=?

555-605 (Medium) | Number Properties

555-605 (Medium) | Number Properties hide tags

MathRevolution

11 Jul 2018, 01:09

8

5

3,186

by: MathRevolution

15 Jul 2018, 06:55

ER

Is x = y? (1) |x| + |y| = 0 (2) x^2 + y^2 = 0

555-605 (Medium) | Absolute Values, Algebra

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

MathRevolution

01 Jun 2017, 01:09

10

4

2,670

by: bumpbot

31 Jul 2018, 10:39

ER

What is the length of the sides of a given cube?

Sub 505 (Easy) | Geometry

Sub 505 (Easy) | Geometry hide tags

MathRevolution

23 Aug 2018, 02:11

3

5

3,090

by: MathRevolution

26 Aug 2018, 18:20

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What is the area of a triangle?

505-555 (Easy) | Geometry

505-555 (Easy) | Geometry hide tags

MathRevolution

31 Aug 2018, 01:12

3

5

3,212

by: MathRevolution

02 Sep 2018, 18:47

ER

What is the area of the above triangle?

505-555 (Easy) | Geometry

505-555 (Easy) | Geometry hide tags

MathRevolution

06 Sep 2018, 01:33

1

3

1,931

by: MathRevolution

09 Sep 2018, 18:22

ER

What is the value of the 2-digit positive integer n if its tens digit

555-605 (Medium) | Number Properties

555-605 (Medium) | Number Properties hide tags

MathRevolution

07 Sep 2018, 01:17

3

4

2,417

by: MathRevolution

09 Sep 2018, 18:25

ER

What is the perimeter of a rectangle?

555-605 (Medium) | Geometry

555-605 (Medium) | Geometry hide tags

MathRevolution

20 Sep 2018, 01:59

3

4

2,670

by: MathRevolution

24 Sep 2018, 05:18

ER

If x=0.abcabc........(a repeating infinite decimal), what is the value

505-555 (Easy) | Number Properties

505-555 (Easy) | Number Properties hide tags

MathRevolution

10 Oct 2018, 00:58

5

1,760

by: Salsanousi

12 Oct 2018, 14:19

ER

The above figure shows a sector of a circle. What is the area of the s

505-555 (Easy) | Geometry

505-555 (Easy) | Geometry hide tags

MathRevolution

11 Oct 2018, 01:35

5

9

2,586

by: fskilnik

17 Oct 2018, 12:12

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

2,252

by: kapstone1996

04 Dec 2018, 09:33

ER

If x and y are positive integers, is xy even? 1) x+y is odd 2) xy is e

505-555 (Easy) | Number Properties

505-555 (Easy) | Number Properties hide tags

MathRevolution

27 Jul 2017, 01:10

4

2,347

by: lucajava

02 Apr 2019, 10:16

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

2,097

by: Arro44

02 May 2019, 03:40

ER

What is the perimeter of a certain right triangle?

555-605 (Medium) | Geometry

555-605 (Medium) | Geometry hide tags

MathRevolution

11 Jul 2016, 18:31

10

4

2,792

by: bumpbot

07 May 2019, 22:18

ER

Math Revolution Daily quizzes

555-605 (Medium) | Statistics and Sets Problems

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

1, 2, 3

MathRevolution

09 Jan 2017, 22:29

25

41

7,524

by: bumpbot

24 May 2019, 04:12

ER

The product of 4 consecutive odd integers is negative. What is the lar

555-605 (Medium) | Number Properties

555-605 (Medium) | Number Properties hide tags

MathRevolution

17 Jul 2018, 01:11

5

6

2,152

by: CareerGeek

14 Jun 2019, 23:49

ER

If w1x1=y1z1, w2x2=y2z2, and w2<w1, i

705-805 (Hard) | Inequalities

705-805 (Hard) | Inequalities hide tags

MathRevolution

24 Feb 2016, 22:13

4

5

3,422

by: bumpbot

17 Jun 2019, 12:46

ER

Four values from a data set of 5 elements are 10, 10, 11, and 11. What

605-655 (Medium) | Statistics and Sets Problems

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

MathRevolution

01 May 2018, 06:04

1

5

3,658

by: BelalHossain046

28 Jun 2019, 10:37

ER

If m is 2-digit positive integer and n is a positive integer, what is

605-655 (Medium) | Exponents, Number Properties

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

MathRevolution

13 Oct 2016, 19:04

7

9

3,035

by: kapstone1996

02 Jul 2019, 11:29

ER

What is the area of the region AOB shaded shown as above?

555-605 (Medium) | Geometry

555-605 (Medium) | Geometry hide tags

MathRevolution

08 Jun 2018, 08:19

7

12

5,382

by: saurabh9gupta

12 Jul 2019, 03:25

ER

If knz≠0, what is the ratio of k to n? 1) The ratio of k to z is 2 to

Sub 505 (Easy) | Fractions and Ratios

Sub 505 (Easy) | Fractions and Ratios hide tags

MathRevolution

28 Mar 2016, 05:00

2

3

6,459

by: Kinshook

21 Jul 2019, 03:57

ER

Is the perimeter of a triangle greater than 100?

655-705 (Hard) | Geometry

655-705 (Hard) | Geometry hide tags

MathRevolution

17 Jan 2016, 21:44

4

2,791

by: TheNightKing

13 Aug 2019, 16:26

ER

In a museum X, a total entrance fee is $x plus $z each person greater

605-655 (Medium) | Inequalities

605-655 (Medium) | Inequalities hide tags

MathRevolution

10 Feb 2016, 21:59

4

6

2,918

by: KarishmaB

26 Aug 2019, 21:45

ER

If a, b, and c are consecutive 2-digit positive integers in that order

655-705 (Hard) | Number Properties

655-705 (Hard) | Number Properties hide tags

MathRevolution

09 Aug 2018, 01:30

8

6

1,829

by: bumpbot

04 Sep 2019, 11:58

ER

The average (arithmetic mean) of a list of 5 numbers (arithmetic mean)

555-605 (Medium) | Statistics and Sets Problems

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

MathRevolution

23 Nov 2017, 02:21

2

3

2,978

by: bumpbot

24 Sep 2019, 09:42

ER

How many 5 existed in the 11 numbers?

505-555 (Easy) | Statistics and Sets Problems

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

MathRevolution

26 Jul 2016, 18:34

4

12

3,358

by: bumpbot

31 Oct 2019, 09:47

ER

A law firm charges 1500 dollars in total for jobs that take at most 10

655-705 (Hard) | Word Problems, Work and Rate Problems

655-705 (Hard) | Word Problems, Work and Rate Problems hide tags

MathRevolution

22 Jun 2018, 00:44

7

3

3,164

by: bumpbot

20 Nov 2019, 03:26

ER

For the integers x and y, if xy is a multiple of 25, is y a multiple o

655-705 (Hard) | Number Properties

655-705 (Hard) | Number Properties hide tags

MathRevolution

02 Mar 2018, 01:17

10

4

2,455

by: bumpbot

16 Dec 2019, 22:14

ER

At least 10 cars have tinting window and fog light. 40% cars which hav

655-705 (Hard) | Arithmetic

655-705 (Hard) | Arithmetic hide tags

MathRevolution

14 Jun 2016, 09:06

9

4

3,112

by: bumpbot

09 Feb 2020, 11:13

ER

A circle and a rectangle are there shown as above figure. If the area

555-605 (Medium) | Geometry

555-605 (Medium) | Geometry hide tags

MathRevolution

27 Mar 2016, 01:42

4

5

2,901

by: bumpbot

06 Mar 2020, 03:06

ER

If x and y are positive integers, xy-2=?

655-705 (Hard) | Number Properties

655-705 (Hard) | Number Properties hide tags

MathRevolution

23 Dec 2016, 02:31

1

8

3,446

by: LeoN88

09 Mar 2020, 22:00

ER

If x, y, and z are positive integers, is x+y divisible by 3? 1) x+z is

555-605 (Medium) | Multiples and Factors

555-605 (Medium) | Multiples and Factors hide tags

MathRevolution

12 Jul 2017, 01:09

9

4

2,885

by: Kinshook

30 Mar 2020, 07:03

ER

If x and y are positive integers, when x^4-y^4 is divided by 4,

555-605 (Medium) | Number Properties

555-605 (Medium) | Number Properties hide tags

MathRevolution

10 Oct 2016, 06:04

3

2,154

by: bumpbot

10 Apr 2020, 04:22

ER

If m and n are positive integers and

655-705 (Hard) | Number Properties

655-705 (Hard) | Number Properties hide tags

MathRevolution

26 Jul 2018, 01:44

3

5

2,714

by: rsmalan

22 Apr 2020, 00:31

ER

In the figure, what is BD^2 - CD^2?

555-605 (Medium) | Geometry

555-605 (Medium) | Geometry hide tags

MathRevolution

11 May 2020, 19:50

2

2,083

by: MathRevolution

13 May 2020, 03:31

ER

If a=12+12+12+…, and b=13-13-13-…, what is a2+2a+b2-3b?

655-705 (Hard) | Algebra

655-705 (Hard) | Algebra hide tags

MathRevolution

13 May 2020, 03:34

6

3

1,914

by: NiftyNiffler

15 May 2020, 07:44

ER

If xy0, is |x|>|y|

Poor Quality

Poor Quality hide tags

MathRevolution

19 Jan 2018, 01:17

2

10

3,174

by: Bunuel

26 Jun 2020, 07:44

ER

2^(x+y)/2^(x-y)=?

505-555 (Easy) | Exponents

505-555 (Easy) | Exponents hide tags

MathRevolution

12 Jul 2016, 19:05

14

16

9,557

by: bumpbot

31 Jul 2020, 21:37

ER

What is the remainder when 2^n is divided by 10?

555-605 (Medium) | Number Properties

555-605 (Medium) | Number Properties hide tags

MathRevolution

15 Aug 2018, 09:52

4

6

4,467

by: Kinshook

01 Aug 2020, 23:52

ER

For positive integers m and n, is m^n a perfect square?

605-655 (Medium) | Number Properties

605-655 (Medium) | Number Properties hide tags

MathRevolution

25 Feb 2019, 01:08

4

3

2,366

by: Shrey08

01 Sep 2020, 21:53

ER

If C=P(1+r/100)^n where C is the capital, P is t

605-655 (Medium) | Percent and Interest Problems

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

MathRevolution

23 Oct 2017, 02:16

8

3

2,911

by: bumpbot

14 Sep 2020, 21:54

ER

If x and y are positive integers, what is the remainder when

555-605 (Medium) | Exponents, Remainders

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

MathRevolution

25 May 2018, 02:38

10

8

3,419

by: Basshead

27 Oct 2020, 10:05

ER

A rectangle has area 24 above. What is the area of the triangle EFG?

655-705 (Hard) | Geometry

655-705 (Hard) | Geometry hide tags

MathRevolution

11 Jan 2016, 16:53

3

4

3,140

by: bumpbot

01 Dec 2020, 00:34

ER

Is a positive integer n greater than 1 divisible by 2?

505-555 (Easy) | Multiples and Factors

505-555 (Easy) | Multiples and Factors hide tags

MathRevolution

07 Mar 2017, 01:02

2

6

2,445

by: bumpbot

16 Dec 2020, 19:31

ER

What is the value of the positive integer k?

555-605 (Medium) | Remainders

555-605 (Medium) | Remainders hide tags

MathRevolution

15 Feb 2018, 04:39

4

5

3,227

by: bumpbot

14 Jan 2021, 21:23