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

179

15

79,736

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

858

24

188,981

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

488,681

by: bb

29 Aug 2025, 13:27

ER

If a and b are integers, Is b = 0? (1) a = ab – 1 (2) a is NOT equa

655-705 (Hard) | Algebra

655-705 (Hard) | Algebra hide tags

GMATinsight

03 Oct 2017, 00:35

1

2

1,632

by: Nikkb

03 Oct 2017, 00:52

ER

Is r^x < 100?

705-805 (Hard) | Exponents +2 tags

705-805 (Hard) | Exponents, Inequalities, Roots hide tags

Bunuel

03 Oct 2017, 00:05

34

8

4,926

by: bumpbot

22 May 2023, 08:00

ER

If the total weight of d equally weighted objects is 40 pounds, how

705-805 (Hard) | Word Problems

705-805 (Hard) | Word Problems hide tags

Bunuel

03 Oct 2017, 00:03

5

3

2,360

by: mahipal

29 Apr 2019, 05:19

ER

If a and b are nonzero integers, what is the value of ab?

705-805 (Hard) | Algebra

705-805 (Hard) | Algebra hide tags

Bunuel

03 Oct 2017, 00:03

3

2

1,929

by: bumpbot

29 Sep 2022, 01:03

ER

What is the value of x^6/(x^2+1)?

655-705 (Hard) | Absolute Values, Algebra

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

Bunuel

02 Oct 2017, 23:59

10

6

4,021

by: bumpbot

21 Dec 2023, 22:28

ER

If a = c*10^b and a and b are integers, what is the value of b?

655-705 (Hard) | Number Properties

655-705 (Hard) | Number Properties hide tags

Bunuel

02 Oct 2017, 23:57

11

9

2,807

by: bumpbot

24 Oct 2023, 05:50

ER

If xy = 3, what is the value of xy(x + y) ?

705-805 (Hard) | Algebra

705-805 (Hard) | Algebra hide tags

Bunuel

02 Oct 2017, 23:56

9

7

3,815

by: bumpbot

17 Sep 2019, 05:54

ER

If y ≠ 0 and z ≠ 0, what is the value of x/(yz) ?

555-605 (Medium) | Algebra

555-605 (Medium) | Algebra hide tags

Bunuel

02 Oct 2017, 23:54

2

1

1,508

by: niks18

03 Oct 2017, 03:18

ER

If xy > 0, does (x – 1)(y – 1) = 2 ? (1) x + y = –1 (2) x = y

805+ (Hard) | Algebra

805+ (Hard) | Algebra hide tags

Bunuel

02 Oct 2017, 23:52

18

6

3,502

by: bumpbot

05 Aug 2023, 23:19

ER

Does (x^2 - y^2)^(1/2) = x + y?

655-705 (Hard) | Algebra

655-705 (Hard) | Algebra hide tags

Bunuel

02 Oct 2017, 23:50

4

2

1,960

by: kaulshanx

07 Oct 2017, 09:30

ER

Does b = 2b - a ?

655-705 (Hard) | Algebra

655-705 (Hard) | Algebra hide tags

Bunuel

02 Oct 2017, 23:49

2

5

2,168

by: Shobhit7

05 Oct 2017, 21:34

ER

If x is not equal to 1, then is y equal to zero?

555-605 (Medium) | Number Properties

555-605 (Medium) | Number Properties hide tags

fitzpratik

02 Oct 2017, 20:52

1

2,302

by: Bunuel

02 Oct 2017, 20:55

ER

If rs ≠ 0, does 1/r + 1/s = 5 ?

705-805 (Hard) | Algebra, Inequalities

705-805 (Hard) | Algebra, Inequalities hide tags

Bunuel

02 Oct 2017, 04:45

4

2,576

by: bumpbot

15 Jul 2022, 08:04

ER

If x is an integer, is (3x - y)^(1/2) = (2x - 2y)^(1/2) ?

705-805 (Hard) | Algebra

705-805 (Hard) | Algebra hide tags

Bunuel

02 Oct 2017, 04:43

7

3

1,964

by: Bunuel

17 Jan 2018, 21:03

ER

If x is an integer, is (3x - y)^(1/2) = (2x - 2y)^(1/2) ?

705-805 (Hard) | Algebra

705-805 (Hard) | Algebra hide tags

Bunuel

02 Oct 2017, 04:42

2

3

1,693

by: Raksat

07 Oct 2017, 10:14

ER

If the operation # is defined by x#y = ax + by (a and b are constants)

605-655 (Medium) | Functions and Custom Characters

605-655 (Medium) | Functions and Custom Characters hide tags

MathRevolution

08 Aug 2024, 13:31

15

7

4,938

by: bumpbot

03 Apr 2026, 23:17

ER

What is the value of x^2 – y^2 ? (1) x^2 + y^2 = 2xy (2) x = |y|

605-655 (Medium) | Absolute Values, Algebra

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

Bunuel

02 Oct 2017, 00:47

8

4

4,490

by: bumpbot

23 Jul 2021, 09:17

ER

If x and y are positive integers and 2^x + 2^x + 2^x + 2^x = y, what

605-655 (Medium) | Exponents, Inequalities

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

Bunuel

02 Oct 2017, 00:42

2

3

2,307

by: bumpbot

03 Mar 2021, 00:06

ER

If xy + x is a prime number, is xy + x a multiple of 3?

805+ (Hard) | Number Properties

805+ (Hard) | Number Properties hide tags

Bunuel

02 Oct 2017, 00:28

21

15

5,488

by: bumpbot

04 Nov 2025, 19:04

ER

Lines L and M intersect at (-2,-2). Is the Value of X- intercept of L

805+ (Hard) | Coordinate Plane

805+ (Hard) | Coordinate Plane hide tags

srikanth9502

02 Oct 2017, 00:26

48

15

8,669

by: bumpbot

19 Oct 2024, 02:07

ER

Is (6a + x^2)^(1/2) = a + x ?

705-805 (Hard) | Algebra

705-805 (Hard) | Algebra hide tags

Bunuel

02 Oct 2017, 00:03

31

10

3,500

by: Mikirokdy

12 Dec 2024, 05:11

ER

If x is an integer, is (3x - y)^(1/2) = (2x - 2y)^(1/2) ?

655-705 (Hard) | Algebra

655-705 (Hard) | Algebra hide tags

Bunuel

02 Oct 2017, 00:01

5

2,157

by: Raksat

07 Oct 2017, 10:25

ER

Is x < y? (1) x^(1/2) < y (2) x^2 < y

705-805 (Hard) | Inequalities

705-805 (Hard) | Inequalities hide tags

sahil5695

01 Oct 2017, 13:13

10

6

3,177

by: bumpbot

23 Oct 2024, 01:40

ER

If y is a positive integer, what is the units digit of y?

555-605 (Medium) | Number Properties

555-605 (Medium) | Number Properties hide tags

JS1290

30 Sep 2017, 20:03

15

8

3,663

by: chetan2u

19 Jun 2019, 20:10

ER

Is the positive integer N a prime number?

555-605 (Medium) | Multiples and Factors

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

pushpitkc

30 Sep 2017, 10:26

2

2,643

by: MathRevolution

01 Oct 2017, 14:09

ER

A wooden rod is cut into two pieces. What is the length of the longer

Sub 505 (Easy) | Word Problems

Sub 505 (Easy) | Word Problems hide tags

adkikani

30 Sep 2017, 04:59

24

4

17,022

by: bumpbot

01 Aug 2023, 02:36

ER

If a and b are positive integers, is a^2 + b^2 divisible by 5?

555-605 (Medium) | Multiples and Factors

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

Bunuel

30 Sep 2017, 01:43

14

5

6,917

by: Bunuel

01 Oct 2023, 10:56

ER

A, B, C, and D are points on a line in that order. If AD = 13, what is

505-555 (Easy) | Geometry

505-555 (Easy) | Geometry hide tags

fitzpratik

29 Sep 2017, 18:20

2

2,865

by: MathRevolution

01 Oct 2017, 13:29

ER

Is x^3 > 0? (1) (x + y)(x – y) = 0 (2) x = |y|

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

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

Bunuel

29 Sep 2017, 03:57

12

8

2,752

by: bumpbot

18 Jun 2019, 18:00

ER

If x > 1, is positive integer b a factor of positive integer a? (1) x

655-705 (Hard) | Exponents

655-705 (Hard) | Exponents hide tags

Bunuel

29 Sep 2017, 03:56

9

3

2,570

by: bumpbot

14 Dec 2023, 02:45

ER

If x1, x2, x3… xn is a sequence such that xn=n/2 for all values x≥1, i

655-705 (Hard) | Inequalities, Sequences

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

Bunuel

28 Sep 2017, 04:56

12

4

5,299

by: bumpbot

17 Dec 2025, 09:51

ER

How many people bought TVs at the Electronics Depot?

555-605 (Medium) | Probability

555-605 (Medium) | Probability hide tags

Bunuel

28 Sep 2017, 01:59

9

7

4,326

by: bumpbot

03 Aug 2023, 06:33

if m>n, then is mn divisible by 3?

Poor Quality

Poor Quality hide tags

fitzpratik

26 Sep 2017, 05:51

4

3,737

by: atrayee345

19 Dec 2018, 05:16

ER

If xy = z, what is the value of y ?

655-705 (Hard) | Algebra

655-705 (Hard) | Algebra hide tags

Bunuel

25 Sep 2017, 23:58

12

7

7,335

by: bumpbot

25 May 2020, 06:39

ER

What is x - y?

555-605 (Medium) | Algebra

555-605 (Medium) | Algebra hide tags

Bunuel

25 Sep 2017, 23:52

1

1,531

by: pushpitkc

25 Sep 2017, 23:59

ER

If a and b are different integers, what is the value of a?

655-705 (Hard) | Algebra

655-705 (Hard) | Algebra hide tags

Bunuel

25 Sep 2017, 23:42

4

2,124

by: bumpbot

01 Sep 2020, 11:31

ER

If x and y are negative integers such that x = x^y + y, what is x?

655-705 (Hard) | Algebra, Exponents

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

Bunuel

25 Sep 2017, 23:35

4

2,195

by: bumpbot

21 Jan 2022, 20:43

ER

How much money did Day School D spend on operating expenses?

Sub 505 (Easy) | Percent and Interest Problems

Sub 505 (Easy) | Percent and Interest Problems hide tags

Sajjad1994

25 Sep 2017, 12:24

2

4

2,053

by: sam3378

14 Nov 2018, 23:06

ER

If x/2 + y = z, what is the value of z ?

655-705 (Hard) | Algebra

655-705 (Hard) | Algebra hide tags

Bunuel

25 Sep 2017, 00:08

3

5

2,191

by: bumpbot

14 Jul 2020, 07:48

ER

Does a = 0? (1) a^3 = a^4 (2) ab ≠ b

555-605 (Medium) | Algebra

555-605 (Medium) | Algebra hide tags

Bunuel

25 Sep 2017, 00:07

1

3

1,831

by: bumpbot

08 Nov 2022, 00:49

ER

If x and y are positive integers and 21x + 23y = z, what is the value

655-705 (Hard) | Algebra

655-705 (Hard) | Algebra hide tags

Bunuel

25 Sep 2017, 00:06

18

5

5,097

by: bumpbot

22 Oct 2023, 08:08

ER

Garcia purchased two kinds of premium coffee from Harbucks Colorado Co

705-805 (Hard) | Word Problems

705-805 (Hard) | Word Problems hide tags

Bunuel

25 Sep 2017, 00:04

10

8

2,779

by: bumpbot

13 Aug 2024, 19:47

ER

What is the value of a^4 – b^4 ?

655-705 (Hard) | Algebra

655-705 (Hard) | Algebra hide tags

Bunuel

25 Sep 2017, 00:03

2

3

2,097

by: bumpbot

29 Nov 2022, 11:07

ER

What is the value of |m|?

505-555 (Easy) | Algebra

505-555 (Easy) | Algebra hide tags

Bunuel

25 Sep 2017, 00:01

1

1,496

by: pushpitkc

25 Sep 2017, 03:03

ER

If 50^r/m^r = 2^r*r^r, what is r?

655-705 (Hard) | Algebra, Exponents

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

Bunuel

25 Sep 2017, 00:00

5

2

1,978

by: bumpbot

11 Jan 2022, 04:54

ER

If y^(3x) = 5^x and y is a positive number, what is x?

605-655 (Medium) | Algebra, Exponents

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

Bunuel

24 Sep 2017, 23:56

4

2,112

by: sahilsnpt

27 Feb 2018, 12:15

ER

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

655-705 (Hard) | Inequalities

655-705 (Hard) | Inequalities hide tags

Bunuel

24 Sep 2017, 23:53

2

6

2,203

by: kunalsinghNS

25 Sep 2017, 02:57

ER

Is 10x > x^10 ? (1) x is a positive number. (2) x^2 – 1 < 0

655-705 (Hard) | Exponents, Inequalities

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

Bunuel

21 Sep 2017, 05:03

3

6

2,617

by: Mo2men

22 Sep 2017, 05:18

ER

If p,q and r are positive numbers, does q lie between p and r on the

705-805 (Hard) | Number Properties

705-805 (Hard) | Number Properties hide tags

pushpitkc

21 Sep 2017, 00:25

70

9

12,099

by: bumpbot

06 Jan 2026, 01:00

ER

The sale price of a certain jacket was 15 percent less than its origin

505-555 (Easy) | Percent and Interest Problems, Word Problems

505-555 (Easy) | Percent and Interest Problems, Word Problems hide tags

bbhawini

20 Sep 2017, 23:54

18

3

10,472

by: bumpbot

05 Apr 2026, 16:21