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

182

15

82,903

by: thisisakr

16 Apr 2026, 11:46

ER

100 Hardest and easiest questions for DS as of May 2026

1, 2

Bunuel

01 Jan 2026, 05:45

862

24

191,087

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

491,038

by: bb

29 Aug 2025, 13:27

ER

Deadly Data Sufficiency Traps and How to Recognize Them

505-555 (Easy) | Number Properties +2 tags

505-555 (Easy), 555-605 (Medium), 655-705 (Hard) | Number Properties hide tags

Narenn

03 Nov 2022, 00:26

1

1,680

by: Narenn

04 Nov 2022, 08:14

ER

Who is older, Akira or Michiko? (1) Akira and Michiko are 3 years

Sub 505 (Easy) | Word Problems

Sub 505 (Easy) | Word Problems hide tags

Bunuel

15 Oct 2022, 08:54

1

2,038

by: aashi1

10 Nov 2022, 06:08

ER

Dave and Matt were among those people who sold tickets for Magna's con

Sub 505 (Easy) | Word Problems

Sub 505 (Easy) | Word Problems hide tags

Bunuel

03 Nov 2022, 01:30

1

893

by: aashi1

10 Nov 2022, 06:11

ER

If n is a positive integer, what is the remainder when n is divided by

505-555 (Easy) | Remainders

505-555 (Easy) | Remainders hide tags

Bunuel

13 Oct 2022, 01:30

1

1,232

by: aashi1

10 Nov 2022, 06:16

ER

What is the volume of a certain cube?

505-555 (Easy) | Geometry

505-555 (Easy) | Geometry hide tags

Bunuel

10 Nov 2022, 11:34

1

870

by: divyadna

10 Nov 2022, 11:43

ER

Is x^3*y^2*z > 0 ? (1) x*y*z > 0 (2) x*y^2 > 0

605-655 (Medium) | Inequalities

605-655 (Medium) | Inequalities hide tags

Bunuel

10 Nov 2022, 10:11

1

1,275

by: harshittahuja

10 Nov 2022, 12:40

ER

If n is not equal to 0, is m/n an integer? (1) m^2/n^2 is an integer

655-705 (Hard) | Number Properties

655-705 (Hard) | Number Properties hide tags

Bunuel

10 Nov 2022, 13:11

1

1,413

by: gmatophobia

10 Nov 2022, 14:04

ER

If rq 0 and p = (3/r)/(2/q + 3/(2q)), what is the value of p ?

555-605 (Medium) | Algebra

555-605 (Medium) | Algebra hide tags

Bunuel

10 Nov 2022, 14:02

1

993

by: gmatophobia

10 Nov 2022, 14:34

ER

If r, s and t are consecutive even integers in increasing order, what

555-605 (Medium) | Number Properties

555-605 (Medium) | Number Properties hide tags

Bunuel

12 Nov 2022, 07:29

1

824

by: BrushMyQuant

12 Nov 2022, 10:25

ER

H is a set with consecutive integers. Does H include 0?

505-555 (Easy) | Number Properties

505-555 (Easy) | Number Properties hide tags

Bunuel

12 Nov 2022, 03:52

1

850

by: BrushMyQuant

12 Nov 2022, 10:34

ER

A batch of cookies is divided among three jars. What fraction of the

Sub 505 (Easy) | Word Problems

Sub 505 (Easy) | Word Problems hide tags

Bunuel

08 Nov 2022, 02:30

1

1,107

by: BrushMyQuant

12 Nov 2022, 11:27

ER

Richard's salary is greater than $25,000. Is Amy's salary greater than

Sub 505 (Easy) | Word Problems

Sub 505 (Easy) | Word Problems hide tags

Bunuel

03 Nov 2022, 05:59

2

2,840

by: ScottTargetTestPrep

12 Nov 2022, 12:35

ER

If x is even and 90 <= x <= 100,what is the value of x?

655-705 (Hard) | Multiples and Factors

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

Bunuel

12 Nov 2022, 13:34

1

1,093

by: gmatophobia

12 Nov 2022, 16:01

ER

If a, b, and c are prime numbers, what is the value of c?

605-655 (Medium) | Number Properties

605-655 (Medium) | Number Properties hide tags

Bunuel

17 Nov 2022, 10:55

3

1,307

by: gmatophobia

17 Nov 2022, 13:24

ER

Is A + B + C = 0? (1) A = -B (2) B = C

555-605 (Medium) | Algebra

555-605 (Medium) | Algebra hide tags

Bunuel

17 Nov 2022, 13:47

1

866

by: gmatophobia

17 Nov 2022, 14:51

ER

Is a two-digit number XY even? (1) LCM of X and Y is even (2) X is ev

605-655 (Medium) | Multiples and Factors, Number Properties

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

Bunuel

10 Nov 2022, 13:15

3

1,154

by: gmatophobia

17 Nov 2022, 22:40

ER

What is the highest common factor of positive integers u and v?

555-605 (Medium) | Multiples and Factors

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

Bunuel

18 Nov 2022, 10:47

1

923

by: ScottTargetTestPrep

18 Nov 2022, 12:19

ER

John wins 25 percent of the first eight games that he plays.

555-605 (Medium) | Word Problems

555-605 (Medium) | Word Problems hide tags

Bunuel

17 Nov 2022, 10:28

1

872

by: gmatophobia

20 Nov 2022, 07:57

ER

The sum of three different positive integers is 11. What is the

555-605 (Medium) | Number Properties

555-605 (Medium) | Number Properties hide tags

Bunuel

20 Nov 2022, 08:10

1

4,570

by: gmatophobia

20 Nov 2022, 08:25

ER

Andrew took four history tests. What was his score on the fourth test?

Sub 505 (Easy) | Statistics and Sets Problems

Sub 505 (Easy) | Statistics and Sets Problems hide tags

Bunuel

20 Nov 2022, 11:39

1

1,151

by: SidhantGupta04

20 Nov 2022, 11:49

ER

If n is a positive integer is n equal to 100?

605-655 (Medium) | Number Properties

605-655 (Medium) | Number Properties hide tags

Bunuel

18 Nov 2022, 09:06

3

2,198

by: sumit99kr

23 Nov 2022, 03:52

ER

If x^2 + y^2 = 10x, is x < y ? (1) y = 3 (2) (x - 5)^2 = 16

605-655 (Medium) | Algebra

605-655 (Medium) | Algebra hide tags

Bunuel

23 Nov 2022, 08:45

2

879

by: gmatophobia

23 Nov 2022, 22:24

ER

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

655-705 (Hard) | Number Properties

655-705 (Hard) | Number Properties hide tags

Bunuel

26 Nov 2022, 11:45

1

1,070

by: gmatophobia

26 Nov 2022, 12:16

ER

Is x^2 x 12 = 0? (1) x^2 + x 6 = 0 (2) x < 0

605-655 (Medium) | Algebra

605-655 (Medium) | Algebra hide tags

Bunuel

26 Nov 2022, 10:15

3

1,477

by: ScottTargetTestPrep

26 Nov 2022, 19:35

ER

For all x, the expression x~ is defined as x^2/2a^2. What is the value

505-555 (Easy) | Functions and Custom Characters

505-555 (Easy) | Functions and Custom Characters hide tags

Bunuel

26 Nov 2022, 10:45

1

950

by: gmatophobia

26 Nov 2022, 22:42

ER

A mathematics teacher prepares the visual representation of the factor

605-655 (Medium) | Word Problems

605-655 (Medium) | Word Problems hide tags

Bunuel

27 Nov 2022, 12:45

1

1,027

by: Archit3110

28 Nov 2022, 02:14

ER

When assigning a score for the term, a professor takes the mean of all

555-605 (Medium) | Statistics and Sets Problems

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

Bunuel

31 Jan 2019, 01:12

2

1,697

by: cat2010

29 Nov 2022, 10:59

ER

If P and Q are positive integers, is P = Q ?

605-655 (Medium) | Multiples and Factors

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

Bunuel

30 Nov 2022, 11:15

1

828

by: gmatophobia

30 Nov 2022, 13:54

ER

What is the value of 5a + 10b, if a and b are positive integers such

555-605 (Medium) | Number Properties

555-605 (Medium) | Number Properties hide tags

Bunuel

30 Nov 2022, 10:15

3

1,487

by: chetan2u

02 Dec 2022, 03:03

ER

If K is a positive 3-digit integer, is K prime?

555-605 (Medium) | Number Properties

555-605 (Medium) | Number Properties hide tags

Bunuel

05 Dec 2022, 09:15

1

913

by: Rabab36

06 Dec 2022, 01:50

ER

If mn 0, what is the value of (m + 1)/m - (n + 1)/n ?

Sub 505 (Easy) | Algebra

Sub 505 (Easy) | Algebra hide tags

Bunuel

31 Dec 2022, 03:42

1

1,328

by: gmatophobia

31 Dec 2022, 07:50

ER

Is x - y > 0? (1) x > |y| (2) y = -3

555-605 (Medium) | Absolute Values, Inequalities

555-605 (Medium) | Absolute Values, Inequalities hide tags

Bunuel

31 Dec 2022, 03:35

2

1,105

by: gmatophobia

31 Dec 2022, 09:25

ER

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

655-705 (Hard) | Exponents, Inequalities

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

Bunuel

02 Jan 2023, 10:45

1

945

by: gmatophobia

02 Jan 2023, 11:50

ER

Does |x - 2| = |y - 2|? (1) x y (2) x < 2 and y < 2

655-705 (Hard) | Absolute Values

655-705 (Hard) | Absolute Values hide tags

Bunuel

02 Jan 2023, 09:45

2

1,040

by: ostrick5465

02 Jan 2023, 21:49

ER

If c - ab is an odd integer, where a, b and c are integers, is a odd?

805+ (Hard) | Number Properties

805+ (Hard) | Number Properties hide tags

Bunuel

04 Jan 2023, 09:15

1

958

by: gmatophobia

04 Jan 2023, 15:16

ER

If positive integer A = m3n2, where m and n are distinct prime numbers

705-805 (Hard) | Number Properties

705-805 (Hard) | Number Properties hide tags

Bunuel

05 Jan 2023, 11:15

1

1,125

by: gmatophobia

05 Jan 2023, 13:27

ER

If K is a positive 3-digit integer, is K prime?

655-705 (Hard) | Number Properties

655-705 (Hard) | Number Properties hide tags

Bunuel

05 Jan 2023, 09:15

2

1,212

by: SaquibHGMATWhiz

05 Jan 2023, 23:11

ER

There are some oranges and apples in a basket. After additional 4 and

705-805 (Hard) | Word Problems

705-805 (Hard) | Word Problems hide tags

Bunuel

27 Dec 2022, 10:00

2

2,142

by: Bunuel

07 Jan 2023, 08:30

ER

What is the value of the positive integer n ?

Sub 505 (Easy) | Multiples and Factors, Number Properties

Sub 505 (Easy) | Multiples and Factors, Number Properties hide tags

Bunuel

08 Jan 2023, 02:46

1

1,232

by: Rabab36

08 Jan 2023, 03:25

ER

What is the value of r ? (1) r^3 - r^2 = 0 (2) r = -r

555-605 (Medium) | Algebra

555-605 (Medium) | Algebra hide tags

Bunuel

08 Jan 2023, 02:36

2

1,112

by: gmatophobia

08 Jan 2023, 05:58

ER

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

555-605 (Medium) | Algebra

555-605 (Medium) | Algebra hide tags

Bunuel

08 Jan 2023, 02:34

2

1,349

by: gmatophobia

08 Jan 2023, 07:43

ER

If x + y = 20 and x < y, is x + y > u + v?

555-605 (Medium) | Inequalities

555-605 (Medium) | Inequalities hide tags

Bunuel

08 Jan 2023, 09:06

1

783

by: mcmoorthy

08 Jan 2023, 09:25

ER

Is |x| + x > |y| + y ? (1) x > y (2) Both x and y are negative

605-655 (Medium) | Absolute Values, Inequalities

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

Bunuel

08 Jan 2023, 10:27

1

1,017

by: gmatophobia

08 Jan 2023, 10:50

ER

Out of the students in a certain college, 60% study more than 20 hours

555-605 (Medium) | Overlapping Sets

555-605 (Medium) | Overlapping Sets hide tags

Bunuel

08 Jan 2023, 10:24

1

1,106

by: gmatophobia

08 Jan 2023, 23:07

ER

If k is a positive integer whose only prime factors are 2 and 5, is k

555-605 (Medium) | Multiples and Factors

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

Bunuel

27 Nov 2022, 12:15

3

1,480

by: Bunuel

09 Jan 2023, 00:00

ER

Is x^2 x 12 = 0? (1) x^2 + x 6 = 0 (2) x < 0

555-605 (Medium) | Algebra

555-605 (Medium) | Algebra hide tags

Bunuel

11 Jan 2023, 09:15

1

888

by: gmatophobia

12 Jan 2023, 01:07

ER

If x > y, what is the value of 47.xy9 when it is rounded to the neares

555-605 (Medium) | Number Properties

555-605 (Medium) | Number Properties hide tags

Bunuel

13 Jan 2023, 09:15

1

734

by: gmatophobia

13 Jan 2023, 10:26

ER

If a, b, x and y are distinct single digit positive integers, is the u

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

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

Bunuel

18 Jan 2023, 11:15

3

1,301

by: SaquibHGMATWhiz

19 Jan 2023, 02:03

ER

Is x^2 > x ? (1) x is a prime number (2) 0 x 2

555-605 (Medium) | Inequalities

555-605 (Medium) | Inequalities hide tags

Bunuel

20 Jan 2023, 10:15

1

781

by: gmatophobia

20 Jan 2023, 13:20

ER

If A, B and n are positive integers, is (3A + B)^n even ?

505-555 (Easy) | Exponents, Number Properties

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

Bunuel

23 Jan 2023, 10:15

2

1,073

by: RohitKakkar

23 Jan 2023, 23:31