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

179

15

80,062

by: thisisakr

16 Apr 2026, 11:46

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100 Hardest and easiest questions for DS as of April 2026

1, 2

Bunuel

01 Jan 2026, 05:45

858

24

189,062

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

488,804

by: bb

29 Aug 2025, 13:27

ER

N is a positive integer. Is n the square of an integer?

655-705 (Hard) | Exponents

655-705 (Hard) | Exponents hide tags

MathRevolution

20 Jan 2016, 21:48

33

11

7,840

by: bumpbot

14 Jul 2023, 09:12

ER

Is p > q? (1) p/q > 1 (2) (p - q)/q > (p - q)/p

655-705 (Hard) | Inequalities

655-705 (Hard) | Inequalities hide tags

raashiedm

01 Mar 2018, 14:25

22

6

7,828

by: bumpbot

13 Jul 2023, 05:40

ER

Does a = b? (1) a/b = b/a (2) (a - b)^2 = a^2 - b^2

655-705 (Hard) | Algebra

655-705 (Hard) | Algebra hide tags

Bunuel

12 Jul 2023, 01:30

5

2

1,334

by: zhanbo

12 Jul 2023, 14:48

ER

Is 0< a/b < 1?

655-705 (Hard) | Inequalities

655-705 (Hard) | Inequalities hide tags

jenl2881

13 Nov 2013, 16:17

17

8

7,832

by: bumpbot

12 Jul 2023, 11:05

Line AC is intersected by line XY at point B. Line DF is intersected b

655-705 (Hard) | Geometry

655-705 (Hard) | Geometry hide tags

rohitgm

08 Jul 2023, 05:22

3

2

1,369

by: HarshaBujji

11 Jul 2023, 08:52

ER

If |xy|=2 and x>y, where x and y are integers, then what is the value

655-705 (Hard) | Absolute Values, Inequalities

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

chetan2u

03 Apr 2020, 22:21

7

2

1,800

by: bumpbot

11 Jul 2023, 08:26

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If x and y are non-zero integers such that |x| > 10, what is the value

655-705 (Hard) | Absolute Values

655-705 (Hard) | Absolute Values hide tags

Bunuel

21 Jan 2022, 02:30

10

3

2,121

by: bumpbot

11 Jul 2023, 08:19

ER

On a number line, integer C is between integers A and B. What is the

655-705 (Hard) | Arithmetic

655-705 (Hard) | Arithmetic hide tags

Bunuel

16 Feb 2016, 00:53

8

3,763

by: bumpbot

10 Jul 2023, 01:36

ER

The members of a local club contributed equally to pay Rs.600 towards

655-705 (Hard) | Word Problems

655-705 (Hard) | Word Problems hide tags

Bunuel

07 Jul 2023, 10:21

3

2,245

by: walterwhite756

09 Jul 2023, 21:11

ER

If n is a positive integer, what is the remainder when (n^2 - 1) is di

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

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

Bunuel

07 Apr 2021, 09:00

5

3

2,799

by: bumpbot

09 Jul 2023, 07:40

ER

An article purchased by Mr. A for $x and was sold to Mr. B for $y. Wha

655-705 (Hard) | Percent and Interest Problems

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

Bunuel

15 Apr 2026, 03:55

15

6

5,763

by: bumpbot

09 Jul 2023, 03:32

ER

Is rst > rs/t? (1) rst > 2 (2) t > 2

655-705 (Hard) | Inequalities

655-705 (Hard) | Inequalities hide tags

nishith17

09 Jul 2023, 00:17

14

10

4,363

by: bumpbot

08 Jul 2023, 22:37

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When a positive integer n is divided by 4, what is the remainder?

655-705 (Hard) | Remainders

655-705 (Hard) | Remainders hide tags

Bunuel

19 Jun 2023, 04:00

3

1

1,223

by: $!vakumar.m

08 Jul 2023, 10:57

The local hiking trail is in the shape of a right trapezoid.

655-705 (Hard) | Algebra, Geometry

655-705 (Hard) | Algebra, Geometry hide tags

Laila12618

07 Jul 2023, 04:19

1

1,344

by: hinasingh

08 Jul 2023, 10:50

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Given that A > 0 and C > 0, is (A + B)/(C + B) > A/C?

655-705 (Hard) | Inequalities

655-705 (Hard) | Inequalities hide tags

Bunuel

23 Sep 2015, 03:29

21

10

4,627

by: singhall

06 Jul 2023, 09:34

ER

If a, b, and c are integers. Is abc + ab + c odd?

655-705 (Hard) | Number Properties

655-705 (Hard) | Number Properties hide tags

Bunuel

06 Jul 2023, 01:31

3

2

1,673

by: Archit3110

06 Jul 2023, 08:38

ER

If x > 0, is x > y? (1) |x - y| > |y| (2) |x - y| = 3

655-705 (Hard) | Absolute Values, Inequalities

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

Bunuel

09 Dec 2019, 01:35

9

3

3,325

by: bumpbot

06 Jul 2023, 04:03

ER

What is the remainder when integer n is divided by two?

655-705 (Hard) | Remainders

655-705 (Hard) | Remainders hide tags

Bunuel

10 Jan 2017, 03:53

6

4

2,564

by: bumpbot

06 Jul 2023, 02:36

ER

If x is a positive integer, what is the units digit of 567^24*x^y

655-705 (Hard) | Algebra +2 tags

655-705 (Hard) | Algebra, Fractions and Ratios, Remainders hide tags

chetan2u

22 Sep 2016, 23:56

15

12

4,485

by: bumpbot

05 Jul 2023, 14:33

ER

Is K an even number ? (1) |K - |K|| = K + |K| (2) K^(1/2) = K

655-705 (Hard) | Absolute Values +2 tags

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

Bunuel

06 Dec 2018, 05:36

21

13

6,271

by: bumpbot

05 Jul 2023, 14:22

If n is a positive integer, what is the value of n?

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

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

Aabhash777

16 Nov 2022, 23:21

7

5,332

by: ankitgoswami

05 Jul 2023, 11:55

ER

Is y < z ?

655-705 (Hard) | Inequalities

655-705 (Hard) | Inequalities hide tags

Gnpth

07 Aug 2014, 11:37

9

11

4,145

by: bumpbot

05 Jul 2023, 05:16

ER

If x is an integer from 1 to 10, inclusive. What is the value of x?

655-705 (Hard) | Number Properties

655-705 (Hard) | Number Properties hide tags

Bunuel

05 Jul 2023, 01:30

7

2

2,218

by: GMATinsight

05 Jul 2023, 04:12

ER

Is the slope of the line l equal to -1/5?

655-705 (Hard) | Coordinate Plane

655-705 (Hard) | Coordinate Plane hide tags

Bunuel

25 Jul 2017, 03:59

12

5

2,651

by: bumpbot

03 Jul 2023, 08:33

ER

If a and b are positive integers less than 10, what is the mode of the

655-705 (Hard) | Combinations +2 tags

655-705 (Hard) | Combinations, Multiples and Factors, Statistics and Sets Problems hide tags

Bunuel

23 Jul 2018, 01:47

33

8

8,635

by: bumpbot

01 Jul 2023, 04:33

ER

If wx 0, is |(|w| - x)|/|x| > 0

655-705 (Hard) | Absolute Values, Inequalities

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

Bunuel

07 Jun 2023, 01:30

4

3

1,863

by: mounj223

29 Jun 2023, 08:46

ER

If n is a positive integer greater than 16, is n a prime

655-705 (Hard) | Remainders

655-705 (Hard) | Remainders hide tags

Jakevmi80

29 Mar 2012, 14:09

10

4

8,086

by: bumpbot

28 Jun 2023, 04:54

ER

If m and n are different positive integers, then how many prime number

655-705 (Hard) | Number Properties

655-705 (Hard) | Number Properties hide tags

Bunuel

16 Jul 2015, 01:27

14

8

8,205

by: bumpbot

27 Jun 2023, 11:49

ER

If y and z are factors of x^2, is x divisible by y? (1) y is a prim

655-705 (Hard) | Multiples and Factors, Number Properties

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

duahsolo

24 Aug 2016, 12:24

8

10

3,252

by: Snehaaaaa

25 Jun 2023, 13:05

ER

In a rectangular coordinate system, what are the coordinates of point

655-705 (Hard) | Coordinate Plane

655-705 (Hard) | Coordinate Plane hide tags

Bunuel

25 Jun 2023, 01:32

1

1,093

by: gmatophobia

25 Jun 2023, 11:36

If x and y are positive integers, is the expression x^x + y^y + x^y ev

655-705 (Hard) | Exponents

655-705 (Hard) | Exponents hide tags

RenB

25 Jun 2023, 07:57

2

1

1,001

by: gmatophobia

25 Jun 2023, 08:18

ER

Given that x, y, z are distinct integers and that xyz 0, what is the

655-705 (Hard) | Algebra

655-705 (Hard) | Algebra hide tags

Bunuel

15 Jun 2023, 01:30

9

8

2,000

by: Bunuel

24 Jun 2023, 12:11

ER

If a and b are positive integers, what is the value of tens digit of

655-705 (Hard) | Exponents +2 tags

655-705 (Hard) | Exponents, Multiples and Factors, Number Properties hide tags

RenB

24 Jun 2023, 06:43

6

1

1,086

by: Bunuel

24 Jun 2023, 06:54

ER

If x and y are positive, is 81^3 = 27^(y - x) ? (1) |y - x| = 4

655-705 (Hard) | Absolute Values, Exponents

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

Bunuel

11 Aug 2021, 07:30

11

8

3,469

by: Bunuel

22 Jun 2023, 01:03

ER

In ΔABC, point D lies on the side AB between vertices A and B. If CD =

655-705 (Hard) | Geometry

655-705 (Hard) | Geometry hide tags

Bunuel

29 Dec 2021, 03:30

7

3

2,163

by: andrenoble

21 Jun 2023, 17:03

ER

If n 2, is (n^2 - 1)/(n - 2) 8 ?

655-705 (Hard) | Inequalities

655-705 (Hard) | Inequalities hide tags

shridhar786

22 Jul 2019, 14:18

10

5

2,627

by: bumpbot

20 Jun 2023, 10:04

In a competition, winner are to be selected in three categories, categ

655-705 (Hard) | Word Problems

655-705 (Hard) | Word Problems hide tags

ktzsikka

23 Oct 2021, 09:13

11

3

3,892

by: singhall

20 Jun 2023, 08:00

ER

If 3^a*4^b = c, what is the value of b? (1) 5^a = 25 (2) c = 36

655-705 (Hard) | Algebra, Exponents

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

nusmavrik

10 Dec 2010, 01:00

63

16

13,490

by: bumpbot

20 Jun 2023, 06:36

ER

If x is an integer, is y divisible by 3? (1) y = 2x^3 + 9x^2 - 5x

655-705 (Hard) | Multiples and Factors

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

Bunuel

19 Jun 2023, 08:44

5

2

1,237

by: Nabneet

19 Jun 2023, 11:23

ER

If M and N are positive integers greater than 1, what is the remainder

655-705 (Hard) | Exponents, Remainders

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

Bunuel

19 Jun 2023, 01:30

4

2

1,215

by: zhanbo

19 Jun 2023, 07:05

ER

If both A and B are 2-digit even numbers, what is the value of A?

655-705 (Hard) | Fractions and Ratios

655-705 (Hard) | Fractions and Ratios hide tags

chetan2u

27 Jul 2018, 22:04

13

14

3,538

by: bumpbot

18 Jun 2023, 03:39

ER

What is the remainder when (n-1)*(n+1) is divided by 24?

655-705 (Hard) | Remainders

655-705 (Hard) | Remainders hide tags

akshayuberoi

31 Jan 2021, 05:20

2

2,381

by: mmdfl

17 Jun 2023, 17:45

ER

For integers x, b and c, x^2 + bx + c = 0. Is x > 0?

655-705 (Hard) | Algebra, Inequalities

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

Bunuel

09 Feb 2017, 01:23

38

9

7,984

by: bumpbot

17 Jun 2023, 06:02

ER

What is the value of |a - b| ? (1) a^2 - b^2 = 9 (1) a^2 + b^2 = 15

655-705 (Hard) | Absolute Values, Algebra

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

Bunuel

02 Mar 2018, 01:06

26

13

7,554

by: bumpbot

17 Jun 2023, 04:02

The scores obtained by Ben and Molly in three tests is shown in the ta

655-705 (Hard) | Algebra

655-705 (Hard) | Algebra hide tags

gmat1393

13 Apr 2019, 06:22

6

4

4,676

by: Deep32470

15 Jun 2023, 06:52

ER

There are 10 numbers, 70, 70, 80, 80, 80,…100. If each of the smallest

655-705 (Hard) | Statistics and Sets Problems

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

MathRevolution

12 Jan 2016, 18:50

1

3

3,218

by: infowarf

15 Jun 2023, 02:03

ER

What is the value of (21*x^2*y)(5*y^2*x)?

655-705 (Hard) | Algebra

655-705 (Hard) | Algebra hide tags

shasadou

23 Jan 2016, 07:37

18

4

7,444

by: mysterymanrog

13 Jun 2023, 12:28

ER

In the figure above, what is the length of PQ times the length of RS?

655-705 (Hard) | Geometry

655-705 (Hard) | Geometry hide tags

Bunuel

20 Nov 2015, 00:53

31

8

10,222

by: arya251294

13 Jun 2023, 10:39

ER

Is x < 0? (1) x^3 + x^2 + x + 2 = 0 (2) x^2 - x - 2 < 0

655-705 (Hard) | Inequalities

655-705 (Hard) | Inequalities hide tags

idontknowwhy94

07 Oct 2016, 10:34

8

10

3,709

by: bumpbot

13 Jun 2023, 03:48

ER

Is x > y? (1) x + 2(xy)^(1/2) + y = 0 (2) x^2 - y^2 = 0

655-705 (Hard) | Algebra

655-705 (Hard) | Algebra hide tags

Bunuel

12 Jun 2023, 01:30

2

3

1,264

by: arnimavarshney10

12 Jun 2023, 13:18