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

183

15

83,669

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

191,742

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

491,709

by: bb

29 Aug 2025, 13:27

At a donation meeting yesterday, each of N persons donated $100

555-605 (Medium) | Algebra, Arithmetic

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

thalcantero

21 Aug 2017, 15:47

2

3,201

by: bumpbot

02 Feb 2024, 23:21

ER

If 0 < a < b is a < 10?

705-805 (Hard) | Inequalities

705-805 (Hard) | Inequalities hide tags

Bunuel

21 Aug 2017, 06:41

9

6

2,482

by: bumpbot

26 Dec 2024, 03:39

ER

If n is a positive integer, what is the remainder when 3^n is divided

505-555 (Easy) | Exponents, Remainders

505-555 (Easy) | Exponents, Remainders hide tags

Bunuel

21 Aug 2017, 06:15

23

5

6,797

by: BrushMyQuant

06 Oct 2024, 06:40

ER

If a and b are consecutive even integers, is a > b?

605-655 (Medium) | Number Properties

605-655 (Medium) | Number Properties hide tags

Bunuel

21 Aug 2017, 06:02

8

7

6,544

by: bumpbot

15 Aug 2025, 21:42

ER

Is the total profit from the sales of 3 products greater than $6? 1) T

555-605 (Medium) | Inequalities

555-605 (Medium) | Inequalities hide tags

MathRevolution

16 Aug 2017, 02:40

2

5

2,268

by: shivam10

14 Oct 2022, 23:03

ER

If x and z are positive integers, is x^2 - z^2 odd?

505-555 (Easy) | Number Properties

505-555 (Easy) | Number Properties hide tags

Skywalker18

15 Aug 2017, 13:04

11

6

4,400

by: bumpbot

25 Apr 2024, 01:34

ER

If the average (arithmetic mean) of 7 numbers is 21, what is the stand

555-605 (Medium) | Statistics and Sets Problems

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

MathRevolution

15 Aug 2017, 01:30

8

4

3,218

by: egmat

19 Feb 2026, 06:33

ER

What is x ? (1) x^2 - 1 = x + 1 (2) x + 3 is a prime number

605-655 (Medium) | Algebra, Number Properties

605-655 (Medium) | Algebra, Number Properties hide tags

Bunuel

14 Aug 2017, 09:22

9

8

5,220

by: Bunuel

07 May 2023, 06:59

ER

If x - y < 0, what is the value of x + y?

505-555 (Easy) | Algebra, Inequalities

505-555 (Easy) | Algebra, Inequalities hide tags

Bunuel

14 Aug 2017, 07:58

4

6

2,559

by: bumpbot

19 May 2020, 16:27

ER

Is x = y?

555-605 (Medium) | Absolute Values, Algebra

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

Bunuel

14 Aug 2017, 06:18

3

5

2,272

by: ScottTargetTestPrep

24 Aug 2017, 13:36

ER

Is x = 5?

605-655 (Medium) | Algebra

605-655 (Medium) | Algebra hide tags

Bunuel

14 Aug 2017, 06:18

5

4

2,729

by: antztheman

26 Aug 2017, 03:35

ER

Is x/y < 0?

505-555 (Easy) | Algebra, Inequalities

505-555 (Easy) | Algebra, Inequalities hide tags

Bunuel

14 Aug 2017, 05:54

2

2,688

by: ScottTargetTestPrep

24 Aug 2017, 13:41

ER

Is xy > 0? (1) x^2 7x + 10= 0 (2) y^2 + 5y + 4 = 0

Sub 505 (Easy) | Algebra

Sub 505 (Easy) | Algebra hide tags

Bunuel

14 Aug 2017, 05:52

2

8

2,759

by: bumpbot

24 Jan 2023, 07:49

ER

What is the maximum number of cubic blocks of wood that will fit into

Sub 505 (Easy) | Word Problems

Sub 505 (Easy) | Word Problems hide tags

Sajjad1994

14 Aug 2017, 04:36

3

2,554

by: StringArgs

19 Aug 2022, 21:00

ER

What is the remainder when the positive integer x is divided by 31?

555-605 (Medium) | Remainders

555-605 (Medium) | Remainders hide tags

Bunuel

14 Aug 2017, 03:51

4

6

2,899

by: ScottTargetTestPrep

24 Aug 2017, 13:37

ER

Is positive integer x prime?

555-605 (Medium) | Number Properties

555-605 (Medium) | Number Properties hide tags

Bunuel

14 Aug 2017, 02:17

1

3

1,652

by: sun90

14 Aug 2017, 03:42

ER

If a, b and c are positive, is ac > 5?

655-705 (Hard) | Algebra, Inequalities

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

Bunuel

14 Aug 2017, 02:02

11

5

3,436

by: bumpbot

30 Jun 2020, 03:06

ER

If |x^2 + y^2 + z^2| < 4, is |x^2 + z^2| < 1 ?

705-805 (Hard) | Absolute Values, Inequalities

705-805 (Hard) | Absolute Values, Inequalities hide tags

Bunuel

14 Aug 2017, 01:59

12

6

3,181

by: bumpbot

07 Feb 2022, 19:26

ER

What is the remainder, when n(n+2) is divided by 24 for a positive int

655-705 (Hard) | Remainders

655-705 (Hard) | Remainders hide tags

MathRevolution

14 Aug 2017, 01:28

22

5

3,884

by: bumpbot

19 Feb 2025, 00:56

ER

If M and N are integers, what is the value of M + N? (1) (M)(N) = 10

605-655 (Medium) | Number Properties

605-655 (Medium) | Number Properties hide tags

DHAR

12 Aug 2017, 02:27

22

9

8,484

by: bumpbot

06 Aug 2022, 05:28

ER

The sum of the terms of a geometric progression is 2047.

705-805 (Hard) | Sequences

705-805 (Hard) | Sequences hide tags

Gnpth

11 Aug 2017, 09:17

18

6

8,293

by: bumpbot

27 Dec 2024, 04:26

ER

If b is positive, is ab positive?

Sub 505 (Easy) | Algebra, Inequalities

Sub 505 (Easy) | Algebra, Inequalities hide tags

Bunuel

11 Aug 2017, 03:43

6

8

8,947

by: bumpbot

19 Oct 2019, 06:54

ER

Is x negative? (1) |1 - x| < 1 (2) |1 + x| > 1

605-655 (Medium) | Absolute Values, Inequalities

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

Bunuel

11 Aug 2017, 02:48

10

3

4,092

by: Bunuel

01 Oct 2023, 02:50

ER

If abc ≠ 0, is abc > 0 ?

805+ (Hard) | Absolute Values, Inequalities

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

Bunuel

11 Aug 2017, 01:19

7

6

3,159

by: Mo2men

12 Aug 2017, 11:20

ER

When a player in a certain game removed a marble from a bag a certain

Poor Quality

Poor Quality hide tags

artisood17

10 Aug 2017, 11:28

1

2,178

by: mikemcgarry

11 Aug 2017, 17:25

ER

If the sum of three integers is even, is the product of the three

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

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

Bunuel

10 Aug 2017, 04:39

12

11

9,564

by: bumpbot

18 Sep 2024, 12:18

ER

Are two triangles congruent?

555-605 (Medium) | Geometry

555-605 (Medium) | Geometry hide tags

Bunuel

10 Aug 2017, 03:31

6

3

5,484

by: bumpbot

12 Aug 2019, 01:25

ER

At the beginning of the last year, a car dealership had 150 cars in

655-705 (Hard) | Word Problems

655-705 (Hard) | Word Problems hide tags

Bunuel

10 Aug 2017, 02:56

10

2

4,101

by: bumpbot

05 Dec 2025, 05:25

ER

A fly crawls around the outside of a circle once. A second fly crawls

555-605 (Medium) | Geometry

555-605 (Medium) | Geometry hide tags

Bunuel

10 Aug 2017, 01:56

2

3,984

by: bumpbot

26 Jan 2020, 03:46

ER

If ⊙ denotes a mathematical operation, does x⊙y = y⊙x for all x and y?

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

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

Bunuel

10 Aug 2017, 01:41

228

15

27,804

by: bumpbot

15 May 2026, 07:10

ER

If x is equal to one of the numbers 5/11, 7/12, 9/13 what is the value

605-655 (Medium) | Fractions and Ratios, Inequalities

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

Bunuel

10 Aug 2017, 01:31

8

7

3,476

by: bumpbot

15 Mar 2022, 04:27

ER

At a certain sales agency, each salesperson receives a monthly base

555-605 (Medium) | Word Problems

555-605 (Medium) | Word Problems hide tags

Bunuel

08 Aug 2017, 23:58

8

4

4,130

by: bumpbot

11 Nov 2025, 10:08

ER

Does hjw = 1?

555-605 (Medium) | Algebra

555-605 (Medium) | Algebra hide tags

Bunuel

06 Aug 2017, 07:47

2

1,570

by: Mo2men

06 Aug 2017, 19:36

ER

If n – k = m, what is the value of m? (1) k – 2 = m + k (2) k = n

505-555 (Easy) | Algebra

505-555 (Easy) | Algebra hide tags

Bunuel

06 Aug 2017, 07:46

5

3,999

by: BrentGMATPrepNow

07 Aug 2017, 12:04

ER

If m/n = 7/4, what is the value of m + n ?

505-555 (Easy) | Algebra

505-555 (Easy) | Algebra hide tags

Bunuel

06 Aug 2017, 07:46

5

6

3,091

by: bumpbot

30 Mar 2023, 12:40

ER

What is Jill's age now?

505-555 (Easy) | Word Problems

505-555 (Easy) | Word Problems hide tags

Bunuel

06 Aug 2017, 07:44

3

2

2,454

by: bumpbot

14 Jun 2019, 05:28

ER

What is the ratio of a two-digit number and its sum of digits?

655-705 (Hard) | Fractions and Ratios

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

Bunuel

06 Aug 2017, 01:05

14

5

3,887

by: bumpbot

10 Aug 2024, 04:17

ER

If f(x) = x^3 + kx^2 − 4x, what is the value of k?

805+ (Hard) | Algebra, Functions and Custom Characters

805+ (Hard) | Algebra, Functions and Custom Characters hide tags

Bunuel

06 Aug 2017, 01:04

2

3

2,650

by: bumpbot

26 Dec 2024, 03:18

ER

In how many years would Bane be exactly thrice as old as his grandson?

805+ (Hard) | Word Problems

805+ (Hard) | Word Problems hide tags

Bunuel

06 Aug 2017, 01:03

12

6

2,862

by: bumpbot

14 Jan 2025, 09:28

ER

If pqr s is a four-digit number, where p, q, r and s are the digits,

805+ (Hard) | Fractions and Ratios, Multiples and Factors

805+ (Hard) | Fractions and Ratios, Multiples and Factors hide tags

Bunuel

06 Aug 2017, 01:02

70

11

28,955

by: Mihirrr009

07 Oct 2024, 01:35

ER

Four friends, P, Q, R and S have $1400 with them. Does P have the high

705-805 (Hard) | Word Problems

705-805 (Hard) | Word Problems hide tags

Bunuel

06 Aug 2017, 00:59

7

4

2,686

by: anhvp56

04 Nov 2024, 08:53

ER

If n can be expressed as p 2q 3 , where p and q are distinct positive

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

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

Bunuel

06 Aug 2017, 00:59

8

2

3,720

by: PSP92

30 Jun 2021, 06:01

ER

If a, b and c are distinct positive integers, what is the value of (a

805+ (Hard) | Exponents

805+ (Hard) | Exponents hide tags

Bunuel

06 Aug 2017, 00:57

16

9

4,286

by: ScottTargetTestPrep

10 Feb 2020, 17:55

ER

If a and b are positive integers such that a > b, what is the remainde

705-805 (Hard) | Multiples and Factors, Remainders

705-805 (Hard) | Multiples and Factors, Remainders hide tags

Bunuel

06 Aug 2017, 00:55

11

3

3,207

by: bumpbot

16 Dec 2023, 15:55

ER

A few taps, numbered 1, 2, 3 . . . , are connected to a tank, each hav

555-605 (Medium) | Work and Rate Problems

555-605 (Medium) | Work and Rate Problems hide tags

Bunuel

06 Aug 2017, 00:54

8

4

6,292

by: bumpbot

15 Mar 2022, 12:41

ER

In a certain game, what is the probability that Martha wins the first

805+ (Hard) | Probability

805+ (Hard) | Probability hide tags

srikanth9502

04 Aug 2017, 12:22

12

3

3,554

by: bumpbot

14 Nov 2024, 03:30

ER

What is the value of | (x+5)/(x+7) |? (1) x2 + 7x – 18 = 0 (2) 3x2 + 4

805+ (Hard) | Absolute Values, Algebra

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

Gnpth

04 Aug 2017, 09:24

23

5

4,407

by: adityaganjoo

02 Jun 2021, 10:56

ER

If a and b are odd natural numbers, is 7/2 + a/2 + b/3 an integer?

655-705 (Hard) | Multiples and Factors

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

Gnpth

04 Aug 2017, 09:21

1

1,504

by: IanStewart

04 Aug 2017, 09:43

ER

There are 200 number of clothes. What is the number of clothes that ar

Sub 505 (Easy) | Overlapping Sets

Sub 505 (Easy) | Overlapping Sets hide tags

MathRevolution

04 Aug 2017, 02:20

4

3

2,713

by: HWPO

12 Nov 2021, 20:40

ER

Is |a| - |b| < |a - b| ? (1) b^a < 0 (2) |b| > |a|

805+ (Hard) | Absolute Values +2 tags

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

1, 2

DHAR

10 Nov 2018, 09:34

48

24

14,772

by: bumpbot

21 Nov 2023, 23:27