GMAT Data Sufficiency (DS) Forum - Free Practice Questions

ER

Complete 1000 GMAT Data Sufficiency Series (DS-1000 Series) Questions

Bunuel

25 Oct 2022, 08:11

176

15

78,723

by: thisisakr

16 Apr 2026, 11:46

ER

100 Hardest and easiest questions for DS as of March 2026

1, 2

Bunuel

01 Jan 2026, 05:45

856

24

188,529

by: bumpbot

16 Sep 2025, 06:05

ER

DS Question Directory by Topic and Difficulty

bb

29 Aug 2025, 13:27

1.5k

0

487,942

by: bb

29 Aug 2025, 13:27

ER

a=x+y and b=x-y. If a^2=b^2, what is the value of y?

655-705 (Hard) | Exponents, Inequalities

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

HumptyDumpty

18 Jan 2013, 16:08

70

10

12,613

by: bumpbot

12 Jul 2025, 06:25

ER

A supermarket sells a certain brand of jelly in two jars of different

505-555 (Easy) | Geometry

505-555 (Easy) | Geometry hide tags

fozzzy

24 Jan 2019, 04:38

40

5

15,669

by: bumpbot

07 Oct 2023, 04:31

ER

Hose A runs at a constant rate and can fill a 11,000 gallon

555-605 (Medium) | Work and Rate Problems

555-605 (Medium) | Work and Rate Problems hide tags

shreerajp99

17 Jan 2013, 10:25

33

7

12,031

by: bumpbot

16 Oct 2022, 04:46

ER

Last month Grace worked, and was paid for, a total of x hours. Some of

605-655 (Medium) | Word Problems

605-655 (Medium) | Word Problems hide tags

fozzzy

17 Jan 2013, 06:50

107

11

22,879

by: bumpbot

25 Apr 2025, 02:03

ER

The figure above shows a construction plan for the intersect

555-605 (Medium) | Geometry

555-605 (Medium) | Geometry hide tags

fozzzy

17 Jan 2013, 07:25

60

15

17,225

by: bumpbot

24 Nov 2022, 08:30

ER

Is the standard deviation of the numbers X, Y and Z equal to

505-555 (Easy) | Statistics and Sets Problems

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

1, 2

fozzzy

17 Jan 2013, 06:15

137

22

29,855

by: bumpbot

25 Jun 2025, 04:58

ER

Is quadrilateral MNOP a square?

505-555 (Easy) | Geometry

505-555 (Easy) | Geometry hide tags

1, 2

fozzzy

17 Jan 2013, 05:53

70

21

22,466

by: bumpbot

07 Nov 2023, 19:17

ER

If a certain store purchased a computer game and then sold it for $50

605-655 (Medium) | Word Problems

605-655 (Medium) | Word Problems hide tags

fozzzy

20 Nov 2023, 09:55

99

7

23,447

by: bumpbot

28 Dec 2025, 10:14

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

18,242

by: bumpbot

30 Jul 2025, 15:09

ER

Sally gave some of her candy to her friends. How many pieces

Sub 505 (Easy) | Word Problems

Sub 505 (Easy) | Word Problems hide tags

fozzzy

20 Nov 2023, 08:25

17

7

17,957

by: Utkarsha20

13 Feb 2026, 03:27

ER

An actor read aloud and recorded a certain 420-page book on several

555-605 (Medium) | Work and Rate Problems

555-605 (Medium) | Work and Rate Problems hide tags

fozzzy

16 Jan 2013, 09:33

83

10

20,643

by: bumpbot

17 Apr 2025, 01:45

ER

What is the value of integer x? (M27-14)

805+ (Hard) | Absolute Values +2 tags

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

1, 2

LM

16 Jan 2013, 00:51

82

23

13,192

by: bumpbot

28 Dec 2023, 10:08

ER

All the terms in Set S are integers. Five terms in S are eve

805+ (Hard) | Multiples and Factors

805+ (Hard) | Multiples and Factors hide tags

superpus07

15 Jan 2013, 17:29

30

14

8,785

by: BinodBhai

31 Aug 2025, 07:10

ER

Between 1980 and 1985, Pierre’s investment portfolio increas

805+ (Hard) | Percent and Interest Problems

805+ (Hard) | Percent and Interest Problems hide tags

daviesj

14 Jan 2013, 06:56

77

14

18,802

by: bumpbot

03 Jan 2026, 05:11

ER

If n is a positive integer, is n^3 + 4n^2 – 5n divisible by

655-705 (Hard) | Algebra, Multiples and Factors

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

daviesj

14 Jan 2013, 06:42

12

5

8,586

by: bumpbot

23 Sep 2023, 21:18

ER

Is (7x)^1/2 an integer?

805+ (Hard) | Number Properties, Roots

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

alex1233

05 Jun 2013, 03:49

209

16

22,986

by: bumpbot

06 Apr 2025, 04:50

ER

At a particular store, candy bars are normally priced at $1.

805+ (Hard) | Word Problems

805+ (Hard) | Word Problems hide tags

trex16864

13 Jan 2013, 03:16

81

12

24,398

by: bumpbot

13 Jan 2026, 09:46

ER

Point K = (A,0), Point G = (2A + 4, sqrt2A+ 9). Is the dista

605-655 (Medium) | Coordinate Plane

605-655 (Medium) | Coordinate Plane hide tags

sambam

29 Oct 2014, 08:37

33

6

18,102

by: bumpbot

17 Jan 2026, 15:47

In a certain two-digit integer, the ratio of the units digit

505-555 (Easy) | Number Properties

505-555 (Easy) | Number Properties hide tags

jsphcal

07 Jan 2013, 22:46

19

10

11,672

by: bumpbot

16 Oct 2024, 14:17

ER

Set S contains exactly four distinct positive integers. Is t

605-655 (Medium) | Statistics and Sets Problems

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

daviesj

07 Jan 2013, 10:30

29

7

9,830

by: bumpbot

09 Aug 2025, 21:35

ER

What is the value of y-x^2-x?

555-605 (Medium) | Algebra

555-605 (Medium) | Algebra hide tags

daviesj

06 Jan 2013, 08:09

22

13

7,446

by: bumpbot

14 Aug 2022, 22:53

ER

Are the positive integers x and y consecutive?

705-805 (Hard) | Algebra

705-805 (Hard) | Algebra hide tags

daviesj

06 Jan 2013, 08:04

24

9

7,660

by: bumpbot

19 Jul 2025, 18:17

ER

For what percent of those tested for a certain infection was the test

555-605 (Medium) | Overlapping Sets

555-605 (Medium) | Overlapping Sets hide tags

gmatbull

06 Jan 2013, 02:59

104

9

25,392

by: bumpbot

27 Apr 2026, 19:49

ER

What are the equations of the two parallel lines shown here?

655-705 (Hard) | Coordinate Plane

655-705 (Hard) | Coordinate Plane hide tags

shanmugamgsn

05 Jan 2013, 21:41

13

5

3,811

by: bumpbot

26 Nov 2019, 05:27

ER

At Western Springs School there are 150 total students

705-805 (Hard) | Overlapping Sets

705-805 (Hard) | Overlapping Sets hide tags

maglian

04 Jan 2013, 05:04

31

14

12,375

by: iamjatinagrawal

20 Mar 2026, 04:38

ER

If these lines intersect at point C, is either m or p greate

705-805 (Hard) | Absolute Values, Coordinate Plane

705-805 (Hard) | Absolute Values, Coordinate Plane hide tags

WoundedTiger

04 Jan 2013, 04:37

16

11

5,690

by: bumpbot

05 Dec 2021, 05:25

ER

On a graph the four corners of a certain quadrilateral

655-705 (Hard) | Coordinate Plane, Statistics and Sets Problems

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

trex16864

04 Jan 2013, 03:06

9

8

5,881

by: bumpbot

17 May 2022, 00:40

ER

If f(x) = x^2 - x - 6, is f(x) ≥ g(x)?

605-655 (Medium) | Algebra, Inequalities

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

WoundedTiger

04 Jan 2013, 02:54

3

10

5,507

by: bumpbot

26 Dec 2025, 02:56

ER

Bill and Sam both rode their bikes from their school to the public

505-555 (Easy) | Distance and Speed Problems

505-555 (Easy) | Distance and Speed Problems hide tags

nemix

03 Jan 2013, 10:09

7

5

8,039

by: bumpbot

15 Jan 2022, 14:30

ER

An antiques dealer purchased three cabinets at three distinc

705-805 (Hard) | Percent and Interest Problems

705-805 (Hard) | Percent and Interest Problems hide tags

daviesj

03 Jan 2013, 05:22

48

8

10,758

by: AditiDeokar

05 Jan 2026, 01:18

ER

If x is a positive integer, is the remainder 0 when (3^x + 1)/10?

605-655 (Medium) | Number Properties, Remainders

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

curtis0063

02 Jan 2013, 09:00

16

17

7,805

by: bumpbot

02 Dec 2022, 03:00

ER

List A contains 5 positive integers, and the average (arithmetic mean)

655-705 (Hard) | Statistics and Sets Problems

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

Archit143

28 Dec 2012, 19:12

56

15

10,803

by: bumpbot

30 Dec 2025, 22:05

ER

Is the probability of an element in Set B also being an elem

Poor Quality

Poor Quality hide tags

tabsang

28 Dec 2012, 07:18

6

4

3,080

by: Bunuel

17 Jul 2014, 08:58

ER

By what percent is the time taken by 12 men to complete a pa

Poor Quality

Poor Quality hide tags

tabsang

28 Dec 2012, 05:49

10

6

4,897

by: fmomen01

22 Oct 2013, 07:14

ER

Is the number n an integer?

505-555 (Easy) | Number Properties

505-555 (Easy) | Number Properties hide tags

jsphcal

27 Dec 2012, 23:07

17

4

8,083

by: bumpbot

24 Apr 2025, 20:49

ER

If George had 16 more textbooks, he would have three times

605-655 (Medium) | Inequalities

605-655 (Medium) | Inequalities hide tags

tim415

27 Dec 2012, 09:56

24

14

9,243

by: bumpbot

30 Mar 2023, 05:21

ER

How many positive prime numbers are less than the integer n?

505-555 (Easy) | Inequalities, Number Properties

505-555 (Easy) | Inequalities, Number Properties hide tags

jsphcal

27 Dec 2012, 00:50

16

4

11,069

by: Kimberly77

24 Oct 2023, 11:22

ER

Marcia's bucket can hold a maximum of how many liters of wat

Sub 505 (Easy) | Word Problems

Sub 505 (Easy) | Word Problems hide tags

Walkabout

26 Dec 2012, 06:03

54

11

24,166

by: totaltestprepNick

25 Feb 2026, 15:29

ER

If n is a positive integer, what is the tens digit of n ?

555-605 (Medium) | Fractions and Ratios

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

Walkabout

01 Jun 2021, 03:31

489

15

78,529

by: totaltestprepNick

24 Feb 2026, 13:12

ER

If n and k are positive integers, is (n + k)^(1/2) > 2n^(1/2)?

505-555 (Easy) | Inequalities, Roots

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

Walkabout

26 Dec 2012, 05:31

284

18

56,714

by: totaltestprepNick

28 Feb 2026, 09:20

ER

What is the value of x + y in the figure above?

555-605 (Medium) | Geometry

555-605 (Medium) | Geometry hide tags

Walkabout

26 Dec 2012, 05:18

357

14

55,959

by: bumpbot

10 Jan 2026, 04:33

ER

What is the circumference of the circle above with center O?

505-555 (Easy) | Geometry

505-555 (Easy) | Geometry hide tags

Walkabout

26 Dec 2012, 04:59

55

11

26,052

by: bumpbot

15 Oct 2023, 10:09

ER

If x < 0, is y > 0 ? (1) x/y < 0 (2) y - x > 0

Sub 505 (Easy) | Inequalities

Sub 505 (Easy) | Inequalities hide tags

Walkabout

26 Dec 2012, 04:50

60

12

20,394

by: bumpbot

11 Aug 2025, 09:20

ER

Every member of a certain club volunteers to contribute equa

555-605 (Medium) | Word Problems

555-605 (Medium) | Word Problems hide tags

Walkabout

26 Dec 2012, 04:44

93

10

23,135

by: totaltestprepNick

03 Mar 2026, 10:08

ER

Is 5^k less than 1,000? (1) 5^(k+1) > 3,000 (2) 5^(k-1) = 5^k - 500

555-605 (Medium) | Exponents, Inequalities

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

Walkabout

26 Dec 2012, 04:41

318

16

43,582

by: totaltestprepNick

28 Feb 2026, 14:29

ER

The inflation index for the year 1989 relative to the year

505-555 (Easy) | Word Problems

505-555 (Easy) | Word Problems hide tags

Walkabout

26 Dec 2012, 04:34

51

10

23,679

by: totaltestprepNick

02 Mar 2026, 07:35

ER

If u(u+v) <> 0 and u > 0 is 1/(u + v) < 1/u + v ?

705-805 (Hard) | Inequalities

705-805 (Hard) | Inequalities hide tags

1, 2

PrashantPonde

26 Dec 2012, 00:36

327

23

37,178

by: bumpbot

05 Jun 2025, 23:18

ER

Sets A and B each consist of three terms selected from the 5

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

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

daviesj

26 Dec 2012, 00:33

29

7

9,406

by: bumpbot

30 Apr 2024, 08:08

ER

In a class, each of the students were asked to pick an integ

Poor Quality

Poor Quality hide tags

tabsang

25 Dec 2012, 01:59

2

4,008

by: tabsang

25 Dec 2012, 05:43

ER

What is the value of 36,500(1.05)^n?

Sub 505 (Easy) | Algebra

Sub 505 (Easy) | Algebra hide tags

megafan

09 May 2020, 05:20

8

2

9,605

by: bumpbot

26 Dec 2022, 04:11