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

178

15

78,982

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

188,674

by: bumpbot

16 Sep 2025, 06:05

ER

DS Question Directory by Topic and Difficulty

bb

29 Aug 2025, 13:27

1.5k

0

488,180

by: bb

29 Aug 2025, 13:27

ER

Is a and b are positive and ab = 1, what is the value of a + b?

655-705 (Hard) | Algebra

655-705 (Hard) | Algebra hide tags

huongguyen

12 Sep 2021, 06:29

7

5

1,881

by: bumpbot

05 Apr 2025, 04:13

ER

f = -16x^2 + bx + c

705-805 (Hard) | Functions and Custom Characters

705-805 (Hard) | Functions and Custom Characters hide tags

huongguyen

13 Oct 2021, 23:14

10

4

2,167

by: bumpbot

14 Jan 2026, 12:32

ER

Are two triangles congruent? (I) They are both equilateral

Poor Quality

Poor Quality hide tags

Hussain15

28 Jun 2009, 05:04

5

3

8,212

by: IanStewart

18 Feb 2011, 12:50

ER

What is the perimeter of rectangle R?

Sub 505 (Easy) | Geometry

Sub 505 (Easy) | Geometry hide tags

Hussain15

20 Jul 2012, 04:31

22

11

11,593

by: bumpbot

15 Feb 2023, 04:04

ER

If x > 1 and m > 1 , is x m < (m + x + 1) ?

805+ (Hard) | Inequalities

805+ (Hard) | Inequalities hide tags

Hussain15

20 Jun 2010, 05:45

17

11

6,273

by: bumpbot

13 Mar 2023, 09:33

ER

Is 1 > |x - 1| ? (1) (x - 1)^2 > 1 (2) 0 > x

655-705 (Hard) | Absolute Values, Inequalities

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

Hussain15

14 Jul 2010, 06:36

19

7

6,353

by: bumpbot

13 Mar 2023, 09:53

ER

Circle O is inscribed in equilateral triangle ABC, which is

605-655 (Medium) | Geometry

605-655 (Medium) | Geometry hide tags

Hussain15

25 Feb 2018, 06:49

78

19

17,890

by: bumpbot

19 Aug 2023, 06:13

ER

Is |x-z| > |x-y| ? (1) |z| > |y| (2) 0 > x

605-655 (Medium) | Absolute Values, Inequalities

605-655 (Medium) | Absolute Values, Inequalities hide tags

Hussain15

14 Jul 2010, 11:18

32

7

9,107

by: bumpbot

02 Jul 2024, 04:06

ER

What is the value of x?

605-655 (Medium) | Absolute Values

605-655 (Medium) | Absolute Values hide tags

1, 2, 3

Hussain15

30 May 2010, 02:52

25

43

13,375

by: bumpbot

05 Dec 2024, 03:51

ER

Is |x - y| > |x - z|? (1) |y| > |z| (2) x < 0

655-705 (Hard) | Absolute Values, Inequalities

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

Hussain15

01 Nov 2009, 08:42

186

19

32,691

by: bumpbot

08 Feb 2025, 05:11

ER

If x/y > 2, is 3x + 2y < 18? (1) x - y is less than 2 (2) y - x is les

805+ (Hard) | Inequalities

805+ (Hard) | Inequalities hide tags

Hussain15

15 Jan 2010, 09:32

171

19

22,815

by: bumpbot

12 Aug 2025, 09:53

ER

If x is not equal to 0, is |x| less than 1? (1) x/|x|< x (2) |x| > x

805+ (Hard) | Absolute Values, Inequalities

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

1, 2, 3

Hussain15

01 Nov 2009, 09:25

526

51

147,121

by: bumpbot

25 Sep 2025, 05:12

ER

Store S sold a total of 90 copies of a certain book during

805+ (Hard) | Word Problems

805+ (Hard) | Word Problems hide tags

1, 2

Hussain15

05 Oct 2025, 01:46

200

20

40,249

by: Bunuel

05 Oct 2025, 01:46

ER

If 20 Swiss Francs is enough to buy 9 notebooks and 3 pencils, is 40

805+ (Hard) | Inequalities, Word Problems

805+ (Hard) | Inequalities, Word Problems hide tags

1, 2

Hussain15

15 Jan 2010, 10:01

436

29

57,624

by: bumpbot

04 Mar 2026, 21:59

ER

In a group of 80 college students, how many own a car?

805+ (Hard) | Overlapping Sets

805+ (Hard) | Overlapping Sets hide tags

1, 2

Hussain15

03 Oct 2017, 02:31

283

25

33,548

by: bumpbot

28 Apr 2026, 18:01

ER

The positive integers are such that p < q r < s <

Poor Quality

Poor Quality hide tags

hussi9

20 May 2011, 00:34

2

3

3,191

by: IanStewart

20 May 2011, 06:32

ER

What is the value of a?

505-555 (Easy) | Algebra

505-555 (Easy) | Algebra hide tags

HustleHarder

31 Aug 2010, 14:46

4

7

4,358

by: bumpbot

10 Jun 2024, 22:06

What is the area of Triangle ABC?

605-655 (Medium) | Geometry

605-655 (Medium) | Geometry hide tags

hwang327

15 Jan 2017, 01:31

7

2

3,059

by: nasgmatbag

14 Sep 2023, 05:36

what is the total population of a metropolitan area consisting of cent

605-655 (Medium) | Fractions and Ratios

605-655 (Medium) | Fractions and Ratios hide tags

Hyeyoung

21 Jan 2023, 02:20

2

3

1,800

by: Its_me_aka_ak

04 Aug 2023, 10:23

If n = 0.abc, is n greater than 2/3? (1) a + b > 14 (2) a + c > 15

655-705 (Hard) | Inequalities

655-705 (Hard) | Inequalities hide tags

Hyeyoung

18 Aug 2023, 17:47

1

817

by: gmatophobia

19 Aug 2023, 00:20

If (x-6)^2 = -|y-5|, what is the value of x + y??

555-605 (Medium) | Absolute Values

555-605 (Medium) | Absolute Values hide tags

Hyeyoung

20 Aug 2023, 20:24

3

1

1,143

by: gmatophobia

20 Aug 2023, 20:47

If x is non-zero number, |x| < |x^3|?

555-605 (Medium) | Inequalities

555-605 (Medium) | Inequalities hide tags

Hyeyoung

25 Oct 2023, 09:50

1

682

by: gmatophobia

25 Oct 2023, 14:21

ER

y= x^2 + 2qx + r, y > 0 ?

705-805 (Hard) | Inequalities

705-805 (Hard) | Inequalities hide tags

Hyeyoung

22 Oct 2023, 11:45

3

1

911

by: chetan2u

25 Oct 2023, 23:05

ER

Jack dropped two balls A and B, If Jack dropped the ball A

805+ (Hard) | Distance and Speed Problems

805+ (Hard) | Distance and Speed Problems hide tags

Hyeyoung

02 Nov 2023, 02:31

5

2

1,726

by: sachi-in

17 Nov 2023, 22:07

ER

If he did not stop along the way, what speed did Bill average on his 3

555-605 (Medium) | Distance and Speed Problems

555-605 (Medium) | Distance and Speed Problems hide tags

HygeinicGangster

31 Dec 2010, 03:12

22

7

22,394

by: bumpbot

29 Aug 2025, 06:20

ER

Beth and Jim each received a salary increase. If Jim's salary was inc

505-555 (Easy) | Word Problems

505-555 (Easy) | Word Problems hide tags

I3igDmsu

07 Jun 2009, 19:43

10

8

10,008

by: bumpbot

08 Feb 2023, 03:50

ER

If the area of a parallelogram is 100, what is the perimeter

605-655 (Medium) | Geometry

605-655 (Medium) | Geometry hide tags

1, 2

I3igDmsu

29 Jun 2009, 19:20

109

25

35,056

by: bumpbot

26 Oct 2023, 09:34

ER

Is a^2*b > 0?

655-705 (Hard) | Absolute Values, Inequalities

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

1, 2

iamba

03 Jun 2015, 06:51

23

22

7,957

by: bumpbot

25 Oct 2021, 13:29

ER

If x is a positive integer, is x! + (x + 1) a prime number?

705-805 (Hard) | Number Properties

705-805 (Hard) | Number Properties hide tags

iamba

07 May 2015, 09:58

93

9

30,950

by: dums

08 May 2025, 15:06

ER

To receive a driver license, sixteen year-olds at Culliver High School

655-705 (Hard) | Overlapping Sets

655-705 (Hard) | Overlapping Sets hide tags

iamba

01 Jul 2007, 09:43

84

15

20,065

by: bumpbot

23 Apr 2026, 08:57

ER

On a particular trip, Jane drove x miles at 30 miles per hour and y

705-805 (Hard) | Distance and Speed Problems

705-805 (Hard) | Distance and Speed Problems hide tags

iamdp

10 Jun 2015, 07:11

132

10

17,211

by: Bunuel

17 Mar 2017, 02:20

ER

Riya and Leo are standing in a line for lunch. How many students are i

555-605 (Medium) | Word Problems

555-605 (Medium) | Word Problems hide tags

iamjatinagrawal

04 Nov 2025, 12:33

3

327

by: iamjatinagrawal

04 Nov 2025, 12:34

Ava and Ben played together as a team in the game of Mind Masters agai

655-705 (Hard) | Statistics and Sets Problems

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

iamjatinagrawal

09 Nov 2025, 02:47

3

1

361

by: piyushnakhate

09 Nov 2025, 06:52

ER

Of the 30 students who each borrowed 2 books from the library, some re

555-605 (Medium) | Overlapping Sets

555-605 (Medium) | Overlapping Sets hide tags

iamjatinagrawal

04 Nov 2025, 09:02

2

1

332

by: ExpertsGlobal5

10 Nov 2025, 02:50

ER

A tank is filled with gasoline to a depth of exactly 2 feet. The tank

555-605 (Medium) | Geometry

555-605 (Medium) | Geometry hide tags

1, 2

iamschnaider

24 Jul 2015, 00:23

690

39

85,723

by: bumpbot

22 Jan 2025, 10:34

ER

Is |x-2|+|x+2|<4?

Poor Quality

Poor Quality hide tags

IanStewart

09 Jan 2012, 23:38

2

4

3,279

by: mydreammba

13 Jan 2012, 21:45

ER

If x and y are non-zero integers, is x = y ?

705-805 (Hard) | Algebra

705-805 (Hard) | Algebra hide tags

iaratul

01 Jul 2014, 04:06

9

4

3,078

by: iaratul

01 Jul 2014, 06:43

ER

In a country, 65% of male citizen and 68% of female citizen are

655-705 (Hard) | Percent and Interest Problems

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

iaratul

26 Sep 2014, 05:12

19

8

4,573

by: bumpbot

03 Mar 2025, 14:10

ER

Is x^2 - y^2 an integer divisible by 8?

805+ (Hard) | Multiples and Factors, Number Properties

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

icandy

09 May 2009, 11:25

83

5

23,770

by: bumpbot

29 Mar 2023, 12:47

ER

If pq ≠ 0, is x an integer?

Sub 505 (Easy) | Algebra

Sub 505 (Easy) | Algebra hide tags

ice t

23 Feb 2015, 12:58

11

9

8,999

by: bumpbot

15 Mar 2022, 12:14

ER

Out of a jar that is filled with quarters, nickels and dimes, k coins

805+ (Hard) | Word Problems

805+ (Hard) | Word Problems hide tags

ich

09 Dec 2017, 04:28

5

7

3,387

by: bumpbot

09 Dec 2023, 01:20

ER

If a, b, and c are positive and a^2+c^2=202, what is the val

655-705 (Hard) | Algebra

655-705 (Hard) | Algebra hide tags

ichauhan.gaurav

04 Jul 2013, 17:59

29

14

9,566

by: bumpbot

28 Oct 2023, 13:57

ER

If m, n, and p are integers, is m + n odd?

555-605 (Medium) | Number Properties

555-605 (Medium) | Number Properties hide tags

ichauhan.gaurav

26 Jun 2013, 09:33

62

15

20,830

by: bumpbot

02 Jan 2025, 10:45

ER

If the diagonals of rectangle ABCD (AB>BC ) cross at point E

555-605 (Medium) | Geometry

555-605 (Medium) | Geometry hide tags

ichha148

22 Nov 2013, 01:31

10

9

7,776

by: bumpbot

10 Jul 2018, 06:48

ER

Is x^2 - y^2 greater than x - y? (1) x - y < 0 (2) x + y < 0

655-705 (Hard) | Inequalities

655-705 (Hard) | Inequalities hide tags

IdanGolan

06 Nov 2021, 08:33

2

4

1,774

by: AndrewN

06 Nov 2021, 08:24

ER

In the rectangular coordinate system below, if OABC

805+ (Hard) | Coordinate Plane, Geometry

805+ (Hard) | Coordinate Plane, Geometry hide tags

idinuv

10 Jan 2014, 22:32

22

5

6,644

by: bumpbot

26 Jun 2023, 06:33

ER

For real numbers, A, B, C, and D on the number line

805+ (Hard) | Absolute Values +2 tags

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

idinuv

04 Jan 2014, 23:57

74

12

10,812

by: bumpbot

10 Aug 2024, 01:17

ER

Alice, Barbara, and Cynia work on identical tasks at differe

655-705 (Hard) | Work and Rate Problems

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

idinuv

23 Dec 2013, 08:01

46

8

14,576

by: bumpbot

25 Jan 2025, 19:38

ER

Which one of the following is greatest among the three

555-605 (Medium) | Algebra, Exponents

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

idontknowwhy94

07 Oct 2016, 04:46

1

2,203

by: abhimahna

07 Oct 2016, 07:17

ER

If m and n are positive Integers , what is the rem

555-605 (Medium) | Exponents, Number Properties

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

idontknowwhy94

18 Oct 2016, 08:34

1

2

2,257

by: abhimahna

23 Oct 2016, 00:12