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

78,708

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

188,519

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

487,926

by: bb

29 Aug 2025, 13:27

ER

△ is one of operations addition, subtraction, multiplication and divis

Sub 505 (Easy) | Functions and Custom Characters

Sub 505 (Easy) | Functions and Custom Characters hide tags

MathRevolution

15 Jun 2018, 02:04

1

5

2,047

by: bumpbot

19 Dec 2022, 23:48

ER

If p and q are integers, then what is the units digit of 155^9q +

805+ (Hard) | Number Properties

805+ (Hard) | Number Properties hide tags

gmatophobia

17 Dec 2022, 13:26

1

2

1,204

by: TheBipedalHorse

20 Dec 2022, 12:02

ER

Company C allocated $100,000 for signing bonuses for p new programmers

505-555 (Easy) | Word Problems

505-555 (Easy) | Word Problems hide tags

Bunuel

26 Dec 2022, 02:30

1

1,087

by: gmatophobia

26 Dec 2022, 08:29

ER

The variables a and b represent the hundreds digits of the two numbers

655-705 (Hard) | Inequalities

655-705 (Hard) | Inequalities hide tags

Bunuel

27 Oct 2021, 07:30

1

6

2,593

by: bumpbot

26 Dec 2022, 12:51

ER

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

655-705 (Hard) | Inequalities

655-705 (Hard) | Inequalities hide tags

Bunuel

28 Dec 2022, 02:30

1

873

by: gmatophobia

28 Dec 2022, 02:37

ER

If S is a set of four numbers x, y, z and w, is the range of the numbe

505-555 (Easy) | Statistics and Sets Problems

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

Bunuel

17 Apr 2017, 01:18

1

3

2,497

by: bumpbot

28 Dec 2022, 06:59

ER

What is the value of (p + q) (r + s)? (1) p(r + s) = 5 and q(r + s) =

505-555 (Easy) | Algebra

505-555 (Easy) | Algebra hide tags

Bunuel

29 Dec 2022, 02:30

1

913

by: gmatophobia

29 Dec 2022, 03:31

ER

Is ab < a ? (1) a = 0 (2) b = 0

555-605 (Medium) | Inequalities

555-605 (Medium) | Inequalities hide tags

Bunuel

29 Dec 2022, 09:00

1

763

by: VoxNihili

29 Dec 2022, 23:49

ER

If ab > 0, is a^3b^2 > 0? (1) a > 0 (2) b > 0

555-605 (Medium) | Inequalities

555-605 (Medium) | Inequalities hide tags

Bunuel

30 Dec 2022, 13:40

1

1,320

by: gmatophobia

30 Dec 2022, 22:43

ER

Does Jack has 2/3 more pens than David has? (1) The number of pens Da

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

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

Bunuel

10 Oct 2018, 04:52

1

2

2,203

by: bumpbot

31 Dec 2022, 02:15

ER

Is a = b ? (1) a^2 = b^2 (2) a = 2

505-555 (Easy) | Algebra

505-555 (Easy) | Algebra hide tags

Bunuel

31 Dec 2022, 03:39

1

965

by: gmatophobia

31 Dec 2022, 07:46

ER

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

555-605 (Medium) | Remainders

555-605 (Medium) | Remainders hide tags

Bunuel

04 Jan 2023, 02:30

1

1,206

by: gmatophobia

04 Jan 2023, 02:47

ER

Is |x^2 - y^2| < 15? (1) |x - y| < 3 (2) |x + y| < 5

555-605 (Medium) | Absolute Values, Inequalities

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

Bunuel

31 Dec 2022, 03:43

1

1,181

by: Rabab36

04 Jan 2023, 12:33

ER

Is a = b ? (1) a/b = 3 (2) a = 3b

605-655 (Medium) | Algebra

605-655 (Medium) | Algebra hide tags

Bunuel

04 Jan 2023, 12:40

1

996

by: gmatophobia

04 Jan 2023, 13:18

ER

If xy < 0, is x^2*y < 0? (1) x > 0 (2) x^3*y < 0

555-605 (Medium) | Inequalities

555-605 (Medium) | Inequalities hide tags

Bunuel

05 Jan 2023, 02:30

1

1,019

by: gmatophobia

05 Jan 2023, 03:12

ER

In the figure, lines AB and DE are parallel. What is the measure of AB

555-605 (Medium) | Geometry

555-605 (Medium) | Geometry hide tags

Bunuel

18 Jul 2019, 22:26

1

2

1,764

by: bumpbot

07 Jan 2023, 02:11

ER

Is kr < 0? (1) k^2r^3 < 0 (2) |k + r| < |k| + |r|

605-655 (Medium) | Absolute Values, Inequalities

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

Bunuel

08 Jan 2023, 02:47

1

2

1,546

by: gmatophobia

08 Jan 2023, 05:52

ER

If x and y are positive integers, is x^y even? (1) x is even (2) y is

505-555 (Easy) | Exponents, Number Properties

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

Bunuel

08 Jan 2023, 02:42

1

2

1,147

by: gmatophobia

08 Jan 2023, 06:59

ER

Is the positive integer r an even number?

505-555 (Easy) | Number Properties

505-555 (Easy) | Number Properties hide tags

Bunuel

08 Jan 2023, 09:56

1

1,060

by: Priyaideal

08 Jan 2023, 22:00

ER

While Mel is on disability leave, his employer pays him a monthly disa

Sub 505 (Easy) | Word Problems

Sub 505 (Easy) | Word Problems hide tags

Bunuel

26 Jun 2018, 05:54

1

4

4,286

by: TBT

09 Jan 2023, 07:14

ER

What is the average (arithmetic mean) monthly salary of a worker in

Sub 505 (Easy) | Word Problems

Sub 505 (Easy) | Word Problems hide tags

Bunuel

10 Jan 2023, 02:30

1

1,548

by: gmatophobia

10 Jan 2023, 02:58

ER

Clara spent 13 of her salary on rent and 15 of the rest on clothes. Ho

Sub 505 (Easy) | Fractions and Ratios

Sub 505 (Easy) | Fractions and Ratios hide tags

cat2010

11 Jan 2023, 18:54

1

1,175

by: GMATinsight

12 Jan 2023, 00:47

ER

Is x^4 > 2,000? (1) x^3 > 400 (2) x > 7.25

605-655 (Medium) | Exponents, Inequalities

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

Bunuel

12 Jan 2023, 02:30

1

1,010

by: gmatophobia

12 Jan 2023, 12:07

ER

If a 0, is b < a < c ? (1) b < |a| < c (2) |b| < |a| < |c|

555-605 (Medium) | Absolute Values, Inequalities

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

Bunuel

12 Jan 2023, 11:15

1

927

by: gmatophobia

12 Jan 2023, 12:35

ER

After the yearly performance appraisal, Boogle, fired 25% of its senio

555-605 (Medium) | Word Problems

555-605 (Medium) | Word Problems hide tags

Bunuel

12 Jan 2023, 09:15

1

870

by: gmatophobia

12 Jan 2023, 12:59

ER

While running in the race, did Jenny's speed ever exceed 9 miles per

555-605 (Medium) | Distance and Speed Problems

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

Bunuel

08 Jan 2023, 09:21

1

1,141

by: stne

15 Jan 2023, 04:30

ER

For any integers x and y, sum (x, y) and diff (x, y) denote the sum

555-605 (Medium) | Functions and Custom Characters, Number Properties

555-605 (Medium) | Functions and Custom Characters, Number Properties hide tags

Bunuel

11 Jan 2023, 11:15

1

2

1,279

by: SaquibHGMATWhiz

16 Jan 2023, 02:04

ER

Does x=22? (1) Ten percent of x is 2.2. (2) One eleventh of x is an

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

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

Bunuel

16 Jan 2023, 02:30

1

1,238

by: gmatophobia

16 Jan 2023, 13:03

ER

What is the value of x?

705-805 (Hard) | Algebra

705-805 (Hard) | Algebra hide tags

BrentGMATPrepNow

05 Jan 2023, 12:34

1

2

1,871

by: BrentGMATPrepNow

16 Jan 2023, 15:45

ER

A line passes through (1,p), is its slope greater than 0?

705-805 (Hard) | Coordinate Plane

705-805 (Hard) | Coordinate Plane hide tags

Bunuel

16 Jan 2023, 10:32

1

3

1,258

by: gmatophobia

17 Jan 2023, 01:58

ER

What is the sum of the terms in a sequence of consecutive multiples of

505-555 (Easy) | Sequences

505-555 (Easy) | Sequences hide tags

Bunuel

13 Jan 2023, 02:30

1

2

1,854

by: Sarmadk5

17 Jan 2023, 08:09

ER

In the figure above, the coordinates of A and B are (0,p) and (p,q)

655-705 (Hard) | Coordinate Plane

655-705 (Hard) | Coordinate Plane hide tags

Bunuel

17 Jan 2023, 02:31

1

1,013

by: gmatophobia

17 Jan 2023, 22:58

ER

What is the area of the sector Y?

555-605 (Medium) | Geometry

555-605 (Medium) | Geometry hide tags

Bunuel

07 Sep 2018, 01:34

1

3

2,010

by: bumpbot

18 Jan 2023, 13:30

ER

What is the standard deviation of the weights of the 30 samples in a

Sub 505 (Easy) | Statistics and Sets Problems

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

Bunuel

15 Sep 2020, 06:45

1

4

2,817

by: bumpbot

19 Jan 2023, 01:59

ER

Each of 5 households owns at least one television set. What is the sta

Sub 505 (Easy) | Statistics and Sets Problems

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

Bunuel

15 Sep 2020, 07:00

1

4

3,801

by: bumpbot

19 Jan 2023, 03:46

ER

If x is a positive integer less than 99 and also a multiple of the

555-605 (Medium) | Number Properties

555-605 (Medium) | Number Properties hide tags

Bunuel

19 Jan 2023, 09:15

1

1,212

by: RohitKakkar

19 Jan 2023, 10:52

ER

What is the sum of the terms in a certain sequence of consecutive inte

555-605 (Medium) | Sequences

555-605 (Medium) | Sequences hide tags

Bunuel

18 Jan 2023, 02:30

1

1,159

by: gmatophobia

21 Jan 2023, 02:58

ER

If ab > 0, is ab^2 > 0 ? (1) a > 0 (2) b > 0

605-655 (Medium) | Inequalities

605-655 (Medium) | Inequalities hide tags

Bunuel

21 Jan 2023, 04:29

1

1,065

by: RohitKakkar

21 Jan 2023, 05:10

ER

If n is positive integer, is 6 a factor of n? (1) 6 is a factor of n^2

555-605 (Medium) | Multiples and Factors

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

Bunuel

21 Jan 2023, 04:32

1

1,111

by: gmatophobia

21 Jan 2023, 06:47

ER

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

655-705 (Hard) | Inequalities

655-705 (Hard) | Inequalities hide tags

Bunuel

21 Jan 2023, 04:33

1

1,011

by: gmatophobia

21 Jan 2023, 06:53

ER

If c and d are integers, is c(d + 1)[/m] even ? (1) Both c and d have

655-705 (Hard) | Number Properties

655-705 (Hard) | Number Properties hide tags

Bunuel

23 Jan 2023, 12:15

1

947

by: gmatophobia

23 Jan 2023, 23:36

ER

Is 0 < x < 1 ? (1) x^2 < x^(1/3) (2) x^3 < x^(1/3)

655-705 (Hard) | Inequalities

655-705 (Hard) | Inequalities hide tags

Bunuel

24 Jan 2023, 08:12

1

866

by: gmatophobia

24 Jan 2023, 13:25

ER

GMAT Club Around The World!!! Each of the candies in a jar is brown

Sub 505 (Easy) | Probability

Sub 505 (Easy) | Probability hide tags

Bunuel

31 Dec 2020, 20:00

1

11

3,590

by: bumpbot

24 Jan 2023, 13:51

ER

If the average of five numbers, x, 6, 3, 15 and 12 is equal to the

555-605 (Medium) | Statistics and Sets Problems

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

Bunuel

27 Jan 2023, 10:15

1

1,124

by: gmatophobia

28 Jan 2023, 22:58

ER

What is the value of n ? (1) n^2 = 1 (2) n^3 = 1

505-555 (Easy) | Algebra

505-555 (Easy) | Algebra hide tags

Bunuel

30 Jan 2023, 04:47

1

2

1,041

by: RICHA1189

30 Jan 2023, 07:05

ER

Is |2x y| < 10? (1) 2x y < 10 (2) y 2x < 10

555-605 (Medium) | Absolute Values, Inequalities

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

Bunuel

30 Jan 2023, 02:30

1

997

by: gmatophobia

30 Jan 2023, 13:48

ER

If x is an integer, is x even? (1) x^2 - y^2 = 0 (2) x^2 + y^2 = 98

655-705 (Hard) | Algebra

655-705 (Hard) | Algebra hide tags

Bunuel

31 Jan 2023, 02:30

1

970

by: SaquibHGMATWhiz

31 Jan 2023, 22:45

ER

What is the average (arithmetic mean) of 10 consecutive integers?

555-605 (Medium) | Statistics and Sets Problems

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

Bunuel

31 Jan 2023, 10:15

1

2,055

by: SaquibHGMATWhiz

01 Feb 2023, 00:51

ER

What is the value of m in the list of numbers above?

Sub 505 (Easy) | Statistics and Sets Problems

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

cat2010

08 Jan 2023, 19:22

1

1,421

by: Bunuel

01 Feb 2023, 03:17

ER

What is the value of x? (1) 3 < x < 5 (2) x^2 = 16

505-555 (Easy) | Algebra

505-555 (Easy) | Algebra hide tags

Bunuel

01 Feb 2023, 02:30

1

1,584

by: gmatophobia

01 Feb 2023, 23:28