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

178

15

78,894

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

857

24

188,628

by: bumpbot

16 Sep 2025, 06:05

ER

DS Question Directory by Topic and Difficulty

bb

29 Aug 2025, 13:27

1.5k

0

488,104

by: bb

29 Aug 2025, 13:27

ER

A hot dog vendor who sells only hot dogs and soft drinks charges $3

555-605 (Medium) | Word Problems

555-605 (Medium) | Word Problems hide tags

Bunuel

07 Jul 2015, 02:47

4

7

4,637

by: bumpbot

20 Jul 2021, 07:59

ER

A zoo has w wildebeests, y yaks, z zebras, and no other animals. If

655-705 (Hard) | Probability

655-705 (Hard) | Probability hide tags

Bunuel

07 Jul 2015, 02:44

34

8

7,315

by: bumpbot

19 Jun 2025, 23:11

ER

In the town of Z, the town lion roars on some days and not on others.

555-605 (Medium) | Probability

555-605 (Medium) | Probability hide tags

Bunuel

07 Jul 2015, 02:43

20

7

7,779

by: bumpbot

06 Dec 2025, 06:10

ER

Given that x is a positive integer, what is the greatest common diviso

705-805 (Hard) | Multiples and Factors, Number Properties

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

Bunuel

07 Jul 2015, 02:28

57

11

9,243

by: bumpbot

28 Mar 2025, 21:54

ER

What is the value of x?

555-605 (Medium) | Number Properties

555-605 (Medium) | Number Properties hide tags

Bunuel

07 Jul 2015, 01:54

10

8

4,842

by: bumpbot

20 Sep 2023, 10:25

ER

If x is an integer, is x even?

Sub 505 (Easy) | Number Properties

Sub 505 (Easy) | Number Properties hide tags

RichaKhanna

07 Jul 2015, 00:46

1

5

4,338

by: bumpbot

02 Oct 2020, 03:05

In a given month, a lawyer charged his clients at an average rate of

655-705 (Hard) | Statistics and Sets Problems

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

runkun

05 Jul 2015, 11:33

7

5

3,259

by: bumpbot

10 Dec 2025, 21:14

ER

If x is an integer, is x^3 divisible by 7

Sub 505 (Easy) | Multiples and Factors

Sub 505 (Easy) | Multiples and Factors hide tags

abhinav008

05 Jul 2015, 08:24

5

6

3,614

by: bumpbot

08 Jul 2022, 06:20

ER

When 120 is divided by positive single-digit integer m the remainder

805+ (Hard) | Absolute Values, Multiples and Factors

805+ (Hard) | Absolute Values, Multiples and Factors hide tags

Harley1980

30 Jun 2015, 10:51

127

10

18,774

by: bumpbot

25 Feb 2024, 10:10

ER

If 10 - ax = bx then what is value of |a-b|?

555-605 (Medium) | Absolute Values, Number Properties

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

Harley1980

27 Jun 2015, 14:49

8

6

4,400

by: PriyanshuR

31 Aug 2025, 01:39

ER

An online grocery delivers groceries for $10.00 for the first box of f

605-655 (Medium) | Word Problems

605-655 (Medium) | Word Problems hide tags

Bunuel

26 Jun 2015, 02:58

3

7

4,386

by: ankitgoswami

21 Jun 2022, 09:54

ER

S and T are two water pumps that run at constant rates. If pump T pump

655-705 (Hard) | Work and Rate Problems

655-705 (Hard) | Work and Rate Problems hide tags

Bunuel

26 Jun 2015, 02:51

43

12

9,565

by: bumpbot

09 Nov 2025, 08:38

ER

A study involved a total of 6 barrels of a liquid mixture. If the stan

555-605 (Medium) | Statistics and Sets Problems

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

Bunuel

26 Jun 2015, 02:50

16

9

5,473

by: pierjoejoe

18 Oct 2024, 02:16

ER

For a set of 3 numbers, assuming there is only one mode, does the mode

705-805 (Hard) | Statistics and Sets Problems

705-805 (Hard) | Statistics and Sets Problems hide tags

Bunuel

26 Jun 2015, 02:24

12

4

3,872

by: bumpbot

02 Jan 2025, 09:33

ER

What is the area of isosceles triangle X?

505-555 (Easy) | Geometry

505-555 (Easy) | Geometry hide tags

Bunuel

26 Jun 2015, 02:22

7

9

7,316

by: bumpbot

09 Jul 2020, 01:05

ER

After a long career, John C. Walden is retiring. If there are 25 assoc

555-605 (Medium) | Word Problems

555-605 (Medium) | Word Problems hide tags

Bunuel

26 Jun 2015, 02:19

5

10

5,939

by: bumpbot

08 Jan 2025, 03:33

ER

Given that A = 3y + 8x, B = 3y - 8x, C = 4y + 6x, and D = 4y - 6x

705-805 (Hard) | Algebra

705-805 (Hard) | Algebra hide tags

Bunuel

26 Jun 2015, 02:17

4

4,614

by: bumpbot

25 Dec 2024, 07:28

ER

If b is prime and the symbol # represents one of the following operati

655-705 (Hard) | Functions and Custom Characters, Number Properties

655-705 (Hard) | Functions and Custom Characters, Number Properties hide tags

Bunuel

26 Jun 2015, 02:13

8

5

4,667

by: bumpbot

14 Jan 2025, 07:51

ER

In 2003, a then-nascent Internet search engine developed an indexing

655-705 (Hard) | Word Problems

655-705 (Hard) | Word Problems hide tags

Bunuel

26 Jun 2015, 02:10

6

5

5,557

by: bumpbot

24 Nov 2025, 09:43

ER

x is a positive integer greater than two; is (x^3 + 19837)(x^2 + 5)(x

705-805 (Hard) | Number Properties

705-805 (Hard) | Number Properties hide tags

Bunuel

26 Jun 2015, 02:07

7

13

3,782

by: bumpbot

20 Dec 2019, 00:03

ER

What is the average of A, B, and C?

655-705 (Hard) | Algebra

655-705 (Hard) | Algebra hide tags

ocavon

25 Jun 2015, 09:25

15

2

8,100

by: bumpbot

20 Jul 2025, 23:20

ER

Is x an integer?

655-705 (Hard) | Number Properties

655-705 (Hard) | Number Properties hide tags

camiu

25 Jun 2015, 01:43

22

11

7,558

by: bumpbot

13 Oct 2025, 23:41

ER

If a and b are non-negative integers, is a > b?

655-705 (Hard) | Exponents

655-705 (Hard) | Exponents hide tags

Bunuel

24 Jun 2015, 08:16

31

10

10,894

by: bumpbot

21 Mar 2023, 14:07

ER

Is the number of copies of a certain manuscript that n machines of

Sub 505 (Easy) | Work and Rate Problems

Sub 505 (Easy) | Work and Rate Problems hide tags

erikvm

24 Jun 2015, 05:26

11

4

9,590

by: bumpbot

05 Dec 2023, 21:49

ER

The side of an equilateral triangle has the same length as the diagona

Sub 505 (Easy) | Geometry

Sub 505 (Easy) | Geometry hide tags

Bunuel

23 Jun 2015, 23:11

11

10

22,605

by: bumpbot

29 Jun 2025, 16:00

ER

If O represents the center of a circular clock and the point of the cl

705-805 (Hard) | Geometry

705-805 (Hard) | Geometry hide tags

Bunuel

23 Jun 2015, 23:08

25

11

8,242

by: mgan

15 Nov 2021, 04:51

ER

What is the average (arithmetic mean) of the first 90 measurements

Sub 505 (Easy) | Statistics and Sets Problems

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

mimi0102

23 Jun 2015, 22:09

26

4

15,235

by: bumpbot

11 Jan 2023, 10:47

ER

Development planners detemined the number of new housing units needed

505-555 (Easy) | Word Problems

505-555 (Easy) | Word Problems hide tags

erikvm

23 Jun 2015, 11:49

45

5

16,518

by: bumpbot

25 Jun 2024, 02:24

ER

Vertices A and B of triangle ABC lie on circle with area 25pi.

705-805 (Hard) | Geometry

705-805 (Hard) | Geometry hide tags

Harley1980

23 Jun 2015, 06:20

13

4

2,986

by: bumpbot

08 Apr 2023, 21:20

ER

Is the Triangle ABC right angled at C?

505-555 (Easy) | Geometry

505-555 (Easy) | Geometry hide tags

monk16

23 Jun 2015, 03:08

9

6

4,813

by: bumpbot

01 Apr 2021, 12:50

ER

What is the value of integer x?

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

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

Bunuel

23 Jun 2015, 02:59

46

9

6,692

by: bumpbot

01 Sep 2024, 09:45

ER

Is the integer x odd?

555-605 (Medium) | Number Properties

555-605 (Medium) | Number Properties hide tags

Bunuel

23 Jun 2015, 02:55

20

10

9,069

by: bumpbot

04 Dec 2023, 08:41

ER

If x is a positive integer, is x^2 + 6x +10 odd?

555-605 (Medium) | Number Properties

555-605 (Medium) | Number Properties hide tags

Bunuel

23 Jun 2015, 02:52

18

7

9,978

by: bumpbot

25 Oct 2023, 06:18

ER

If, x, y, and z are integers, is x even?

555-605 (Medium) | Exponents, Number Properties

555-605 (Medium) | Exponents, Number Properties hide tags

Bunuel

23 Jun 2015, 02:47

36

14

11,572

by: NEYR0N

16 Mar 2025, 10:26

ER

A list kept at Town Hall contains that town's average daily temperatur

555-605 (Medium) | Statistics and Sets Problems

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

Bunuel

23 Jun 2015, 02:34

34

10

9,682

by: bumpbot

16 Sep 2024, 07:39

ER

Two racecar drivers, Abernathy and Berdoff, are driving around a

505-555 (Easy) | Distance and Speed Problems

505-555 (Easy) | Distance and Speed Problems hide tags

Bunuel

23 Jun 2015, 02:30

28

13

6,942

by: bumpbot

17 Nov 2025, 14:42

ER

Did it take a certain ship less than 3 hours to travel 9 kilometers?

555-605 (Medium) | Distance and Speed Problems

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

Bunuel

23 Jun 2015, 02:16

32

9

11,495

by: bumpbot

01 Jul 2025, 05:47

ER

If k is a positive integer, is k an integer?

505-555 (Easy) | Number Properties

505-555 (Easy) | Number Properties hide tags

gmatser1

23 Jun 2015, 01:01

11

7

3,462

by: MHIKER

22 Sep 2020, 09:40

ER

If a, b, and c are positive integers such that a < b < c, is a% of b%

705-805 (Hard) | Number Properties, Percent and Interest Problems

705-805 (Hard) | Number Properties, Percent and Interest Problems hide tags

Bunuel

19 Jun 2015, 03:22

85

14

39,508

by: tan1107

03 Mar 2020, 07:29

ER

If n is a positive integer, is n 1 divisible by 3?

705-805 (Hard) | Multiples and Factors

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

Bunuel

19 Jun 2015, 02:12

47

10

11,633

by: Prakruti_Patil

22 Jun 2024, 03:53

ER

If a, b, c, d, and e are positive integers such that

605-655 (Medium) | Algebra, Exponents

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

Bunuel

19 Jun 2015, 02:07

36

9

10,273

by: bumpbot

20 Apr 2025, 21:45

ER

If x 0, is xy > 0? (1) x > 0 (2) 1/x < y

555-605 (Medium) | Inequalities

555-605 (Medium) | Inequalities hide tags

Bunuel

19 Jun 2015, 01:58

13

6

6,244

by: BelalHossain046

13 Mar 2019, 09:24

ER

Is x = 1?

505-555 (Easy) | Algebra

505-555 (Easy) | Algebra hide tags

Bunuel

19 Jun 2015, 01:55

6

5

4,693

by: Bunuel

22 Jun 2015, 06:22

ER

The Given figure is a sector of a Circle with Centre at point O

605-655 (Medium) | Geometry

605-655 (Medium) | Geometry hide tags

GMATinsight

18 Jun 2015, 10:56

9

8

3,301

by: bumpbot

11 Oct 2019, 20:14

ER

If s and t are nonzero integers, is s = 1? 1) st = 1 2) st = t

Sub 505 (Easy) | Algebra

Sub 505 (Easy) | Algebra hide tags

Harley1980

18 Jun 2015, 08:58

21

7

9,279

by: bumpbot

19 Mar 2025, 18:58

ER

P, Q, R and S are points on the number line in that order.

Sub 505 (Easy) | Geometry

Sub 505 (Easy) | Geometry hide tags

Harley1980

18 Jun 2015, 08:51

9

3

17,859

by: bumpbot

01 Apr 2021, 19:38

ER

If j and k are positive integers, is j divisible by 6?

505-555 (Easy) | Multiples and Factors, Number Properties

505-555 (Easy) | Multiples and Factors, Number Properties hide tags

Bunuel

18 Jun 2015, 03:22

20

6

5,745

by: bumpbot

15 Sep 2023, 02:47

ER

What is the value of |x + 4|?

555-605 (Medium) | Absolute Values, Algebra

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

Bunuel

18 Jun 2015, 03:18

22

7

6,456

by: bumpbot

15 Aug 2022, 07:45

ER

If a, b, and c are positive integers, is abc an even integer ?

555-605 (Medium) | Number Properties

555-605 (Medium) | Number Properties hide tags

Bunuel

18 Jun 2015, 03:13

6

7

8,371

by: bumpbot

31 Jan 2021, 13:53

ER

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

705-805 (Hard) | Exponents, Inequalities

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

Bunuel

18 Jun 2015, 03:10

13

12

4,828

by: bumpbot

24 Mar 2018, 22:43