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

78,677

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

854

24

188,501

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

487,903

by: bb

29 Aug 2025, 13:27

ER

By what percent did the infant mortality rate in Country X decrease

555-605 (Medium) | Percent and Interest Problems

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

robu1

10 Jan 2020, 10:10

10

4

2,530

by: anirchat

17 Nov 2024, 11:39

ER

What is the median value of the set R, if for every term in

655-705 (Hard) | Statistics and Sets Problems

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

rochak22

05 Jul 2021, 00:40

112

19

36,628

by: bumpbot

11 Sep 2025, 18:01

ER

If the square root of t is a real number, is the square root

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Rock750

09 Apr 2013, 16:32

3

3,519

by: Maxirosario2012

29 Nov 2014, 17:16

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Is xy < 0 ? (1) 4|x| + 2|y| = 0 (2) 7|x| + 5|y| = 0

555-605 (Medium) | Absolute Values

555-605 (Medium) | Absolute Values hide tags

Rock750

28 Apr 2013, 15:10

3

5

3,267

by: bumpbot

24 Mar 2016, 05:33

ER

What is the ratio of a to b to c ?

Sub 505 (Easy) | Algebra, Fractions and Ratios

Sub 505 (Easy) | Algebra, Fractions and Ratios hide tags

Rock750

28 Apr 2013, 12:05

10

18

10,383

by: bumpbot

25 Dec 2020, 01:15

ER

If a and b are integers, is a/b an even number?

505-555 (Easy) | Number Properties

505-555 (Easy) | Number Properties hide tags

Rock750

09 Nov 2013, 17:52

3

4

3,581

by: Bunuel

06 May 2023, 14:17

ER

The function f is defined for all positive integers n > 4 as

805+ (Hard) | Functions and Custom Characters, Number Properties

805+ (Hard) | Functions and Custom Characters, Number Properties hide tags

Rock750

15 Jan 2014, 12:00

171

14

23,118

by: bumpbot

24 Jan 2025, 13:08

ER

If list S contains nine distinct integers, at least one of w

805+ (Hard) | Statistics and Sets Problems

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

Rock750

24 Jun 2013, 03:07

110

15

22,101

by: bumpbot

05 Aug 2025, 05:56

ER

If 0 < x < 1, is it possible to write x as a terminating dec

705-805 (Hard) | Fractions and Ratios, Number Properties

705-805 (Hard) | Fractions and Ratios, Number Properties hide tags

1, 2

Rock750

24 Jun 2013, 02:20

279

21

33,957

by: arunbhati

17 Jan 2026, 05:02

ER

All of the shoppers in a grocery store are either male or female.

555-605 (Medium) | Algebra, Arithmetic

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

rocker007

28 Jan 2016, 12:31

5

4

4,441

by: bumpbot

05 Jan 2020, 02:50

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

5,049

by: bumpbot

20 Jan 2024, 05:13

ER

Is x between 0 and 1? (1) x^5 is positive. (2) x^4 is less than x.

555-605 (Medium) | Inequalities

555-605 (Medium) | Inequalities hide tags

rocketmandoman

09 Apr 2019, 01:28

4

2

1,510

by: IanStewart

30 Mar 2019, 11:20

ER

The perimeter of a rectangular window is 28 feet. What is the length

705-805 (Hard) | Geometry

705-805 (Hard) | Geometry hide tags

rocketmandoman

04 Apr 2019, 23:59

9

10

2,790

by: UJJWALGULHANI

22 Apr 2020, 10:58

ER

If x, y, and z are numbers, is z = 24 ?

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

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

rocketmandoman

06 May 2019, 00:30

9

4

4,226

by: bumpbot

22 Nov 2022, 06:45

ER

If c and d are positive, is c/d less than 1 ?

655-705 (Hard) | Inequalities

655-705 (Hard) | Inequalities hide tags

rocketmandoman

04 May 2019, 21:28

1

3

1,853

by: bumpbot

16 Jan 2024, 08:13

ER

The symbol Ω represents one of the following operations: add

555-605 (Medium) | Algebra +2 tags

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ROckHIsT

29 Dec 2013, 03:38

56

8

16,103

by: bumpbot

16 Oct 2024, 07:43

ER

Is x = 9?

505-555 (Easy) | Algebra

505-555 (Easy) | Algebra hide tags

rockroars

10 Nov 2010, 04:53

3

4

3,702

by: bumpbot

28 Jul 2020, 03:52

ER

At the beginning of last year, Tony's Auto Dealership had

705-805 (Hard) | Word Problems

705-805 (Hard) | Word Problems hide tags

rockroars

16 Dec 2010, 11:48

26

13

11,347

by: bumpbot

26 Aug 2025, 03:59

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Is k + k < k?

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RockySinha

03 Oct 2017, 11:47

2

1

2,482

by: Bunuel

03 Oct 2017, 11:55

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n is an integer between 1 and 84. What is the value of n?

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rohan2345

23 May 2017, 08:02

2

1,377

by: Bunuel

23 May 2017, 08:40

A certain list consists of n positive integers, and S is the sum

705-805 (Hard) | Number Properties

705-805 (Hard) | Number Properties hide tags

rohan2345

02 Jan 2019, 11:03

2

3

1,891

by: KanishkM

03 Jan 2019, 00:13

ER

Is yx -z > x - yz? (1) y < 1 (2) x > 1

555-605 (Medium) | Inequalities

555-605 (Medium) | Inequalities hide tags

rohan2345

03 Mar 2019, 07:49

2

1,328

by: CrackverbalGMAT

05 Mar 2019, 07:02

If x, y, and z are positive integers and x<y<z, x=?

605-655 (Medium) | Number Properties

605-655 (Medium) | Number Properties hide tags

rohan2345

23 Jan 2019, 05:39

2

1,305

by: arorni

06 Mar 2019, 16:26

ER

Machine A and B print stamps. Both A and B will produce some defect

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rohan2345

15 Mar 2019, 06:49

1

955

by: IanStewart

15 Mar 2019, 07:35

The sides of an isosceles triangle are t-4, t-6, and 2t-20,

555-605 (Medium) | Geometry

555-605 (Medium) | Geometry hide tags

rohan2345

19 Mar 2019, 00:17

3

1

923

by: geezus24x7

23 Mar 2019, 13:02

ER

If N is a positive integer, is N divisible by 29?

605-655 (Medium) | Multiples and Factors

605-655 (Medium) | Multiples and Factors hide tags

rohan2345

01 Apr 2019, 10:45

2

1,239

by: GMATinsight

02 Apr 2019, 02:48

p, q, r, s, and t are five equally spaced points on the number line. W

655-705 (Hard) | Algebra

655-705 (Hard) | Algebra hide tags

rohan2345

20 Jun 2019, 03:43

2

4

3,264

by: nick1816

21 Jun 2019, 06:00

ER

If n is an integer between 40 and 50, inclusive, n=?

555-605 (Medium) | Number Properties

555-605 (Medium) | Number Properties hide tags

rohan2345

06 Dec 2019, 10:43

1

1,719

by: globaldesi

09 Dec 2019, 10:35

ER

Can a circular table close cover a rectangular table completely?

655-705 (Hard) | Geometry

655-705 (Hard) | Geometry hide tags

rohan2345

26 Aug 2019, 00:58

7

4

2,647

by: Fdambro294

26 Aug 2021, 01:24

ER

A circle centers at the origin has radius of 2. If line L is tangent

605-655 (Medium) | Coordinate Plane

605-655 (Medium) | Coordinate Plane hide tags

rohan2345

04 Feb 2019, 05:41

3

2,787

by: bumpbot

27 Jul 2022, 00:38

ER

A book new released include paperback and hardback version. The sales

555-605 (Medium) | Word Problems

555-605 (Medium) | Word Problems hide tags

rohan2345

30 Jan 2020, 06:15

1

3

2,368

by: bumpbot

05 Aug 2022, 11:04

ER

For any number x, [x] denotes the least integer greater than or equal

555-605 (Medium) | Functions and Custom Characters

555-605 (Medium) | Functions and Custom Characters hide tags

rohan2345

11 May 2019, 06:09

4

3

3,069

by: bumpbot

26 Nov 2022, 13:23

ER

What is the tens' digit of a 3-digit positive integer? (1) The integer

555-605 (Medium) | Arithmetic

555-605 (Medium) | Arithmetic hide tags

rohan2345

04 May 2019, 08:13

8

4

2,415

by: bumpbot

20 May 2023, 21:59

ER

Is x+y>z?

555-605 (Medium) | Geometry

555-605 (Medium) | Geometry hide tags

rohan2345

01 Aug 2019, 05:44

1

3

1,847

by: hirakrintu

04 Aug 2023, 06:18

ER

The closing price of Agile stock on Monday, Wednesday and Friday were

555-605 (Medium) | Word Problems

555-605 (Medium) | Word Problems hide tags

rohan2345

11 Jun 2019, 13:00

7

4

2,305

by: Fish181

22 May 2024, 09:07

ER

What is the remainder when 7^m+2 is divided by 5? (1) when m is

655-705 (Hard) | Remainders

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rohan2345

11 Jul 2019, 06:17

14

6

2,963

by: bumpbot

09 Oct 2024, 19:35

ER

Rounded to the nearest unit, x=?

705-805 (Hard) | Number Properties

705-805 (Hard) | Number Properties hide tags

rohan2345

19 Feb 2019, 06:09

16

5

2,769

by: bumpbot

24 Aug 2025, 06:04

If g is the greatest common factor of n and k+8, where n and k are pos

605-655 (Medium) | Number Properties

605-655 (Medium) | Number Properties hide tags

rohan2345

24 Jun 2019, 07:25

3

1,747

by: bumpbot

27 Aug 2025, 01:15

ER

Sam drove at a constant speed from inn A along a highway to inn B.

655-705 (Hard) | Distance and Speed Problems

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rohan2345

08 Apr 2019, 11:27

22

3

4,249

by: bumpbot

18 Oct 2025, 19:30

Is the standard deviation of prices (per share) of 10 stocks less than

605-655 (Medium) | Statistics and Sets Problems

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

rohan2345

12 Jan 2019, 03:40

7

4

2,013

by: Amirgivehei

24 Oct 2025, 10:37

Each of the 20 students has 9, or 10, or 11 books. What is the average

655-705 (Hard) | Statistics and Sets Problems

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

rohan2345

13 Apr 2019, 03:07

17

4

3,038

by: bumpbot

18 Jan 2026, 04:57

ER

Machine A, operating alone at its constant rate, produces 50 feet of

805+ (Hard) | Distance and Speed Problems

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rohan2345

05 Jan 2019, 02:14

29

5

4,567

by: vasu1104

19 Jan 2026, 14:20

ER

What is the circumradius of a right angle triangle if its sides are in

555-605 (Medium) | Geometry

555-605 (Medium) | Geometry hide tags

rohan789

31 Mar 2019, 09:57

2

6

2,338

by: bumpbot

04 Feb 2021, 08:14

Find an average of ages of eight students.

605-655 (Medium) | Word Problems

605-655 (Medium) | Word Problems hide tags

rohan789

29 Mar 2019, 10:32

1

3

1,956

by: bumpbot

28 Mar 2026, 07:19

ER

What is the value of x?

655-705 (Hard) | Algebra +2 tags

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rohankant12

04 Sep 2015, 10:01

11

17

3,574

by: Mo2men

07 Apr 2019, 12:33

ER

Which of the two numbers m and n is greater?

555-605 (Medium) | Algebra, Inequalities

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

rohankant12

28 Aug 2015, 06:41

3

2

2,152

by: CareerGeek

21 Jun 2019, 12:43

ER

Throughout Region R, temperatures are such that households with air

805+ (Hard) | Non-Math Related

805+ (Hard) | Non-Math Related hide tags

Rohanx9

23 Nov 2025, 04:59

21

12

1,887

by: ipsameos

30 Nov 2025, 15:28

ER

X and Y are the lengths of two non-hypotenuse sides of a right triangl

655-705 (Hard) | Geometry

655-705 (Hard) | Geometry hide tags

rohit8865

12 Sep 2016, 04:52

6

9

3,037

by: bumpbot

11 Apr 2022, 08:33

ER

In Greenville last July, what was the average (arithmetic

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rohitgarg

14 May 2017, 01:34

5

11

12,938

by: ash99

22 Apr 2015, 11:32

ER

S is a set of positive integers. The average of the terms in

705-805 (Hard) | Statistics and Sets Problems

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

1, 2

rohitgarg

07 Nov 2013, 11:43

79

20

22,120

by: bumpbot

05 Mar 2025, 22:34