GMAT Data Sufficiency (DS) Forum - Free Practice Questions

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Complete 1000 GMAT Data Sufficiency Series (DS-1000 Series) Questions

Bunuel

25 Oct 2022, 08:11

178

15

79,025

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

188,698

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

488,228

by: bb

29 Aug 2025, 13:27

ER

In a triangle ABC, AC=2. Is BC>

805+ (Hard) | Geometry

805+ (Hard) | Geometry hide tags

Tan2017

14 Jul 2017, 18:40

10

3

2,691

by: bumpbot

06 Aug 2020, 12:19

ER

A jar contains exactly 100 marbles; each marble contains exactly

805+ (Hard) | Probability

805+ (Hard) | Probability hide tags

srikanth9502

14 Jul 2017, 22:03

38

3

5,736

by: bumpbot

25 Jun 2025, 10:09

ER

Company M has two divisions - X and Y. Each division

655-705 (Hard) | Fractions and Ratios

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

broall

15 Jul 2017, 08:38

128

15

19,587

by: Vaishbab

03 Sep 2025, 05:20

ER

If a and b are integers and a*b=2, is a>b?

605-655 (Medium) | Inequalities, Number Properties

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

chetan2u

15 Jul 2017, 21:54

4

2,111

by: stonecold

14 Aug 2017, 04:54

ER

In a zoo, the ratio of elephants to lions is same as lions to deer. If

805+ (Hard) | Fractions and Ratios, Number Properties

805+ (Hard) | Fractions and Ratios, Number Properties hide tags

chetan2u

16 Jul 2017, 01:30

3

13

3,417

by: srikanth9502

17 Jul 2017, 04:15

ER

The average (arithmetic mean) of 6 positive integers is 31/2. What is

655-705 (Hard) | Statistics and Sets Problems

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

Bunuel

16 Jul 2017, 03:12

5

4

2,676

by: bumpbot

21 Oct 2021, 11:19

ER

What is the value of x?

655-705 (Hard) | Algebra

655-705 (Hard) | Algebra hide tags

Bunuel

16 Jul 2017, 22:54

6

3

2,773

by: bumpbot

24 Jan 2024, 01:31

ER

What is the value of x?

705-805 (Hard) | Algebra, Exponents

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

Bunuel

16 Jul 2017, 23:10

9

2

2,262

by: bumpbot

25 Oct 2020, 22:12

ER

Is a + b = 0?

705-805 (Hard) | Algebra

705-805 (Hard) | Algebra hide tags

Bunuel

16 Jul 2017, 23:14

3

2,107

by: bumpbot

30 Oct 2022, 09:10

ER

A few men and a few women are seated in a row. The number of men is on

705-805 (Hard) | Combinations

705-805 (Hard) | Combinations hide tags

Bunuel

16 Jul 2017, 23:32

69

11

8,787

by: srik410

23 Jul 2025, 03:13

ER

A number of students have to be selected from a class of 25 students

655-705 (Hard) | Combinations

655-705 (Hard) | Combinations hide tags

Bunuel

16 Jul 2017, 23:34

51

12

8,011

by: bumpbot

13 Mar 2025, 09:55

ER

Out of 50 people, there are 35 people with college degrees and 30 fema

505-555 (Easy) | Overlapping Sets

505-555 (Easy) | Overlapping Sets hide tags

MathRevolution

17 Jul 2017, 01:58

2

1,849

by: MathRevolution

19 Jul 2017, 01:57

ER

The sum of the elements in set A is 700. Is the the number of elements

655-705 (Hard) | Arithmetic, Statistics and Sets Problems

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

Amby02

17 Jul 2017, 04:58

15

2

4,630

by: bumpbot

09 Jan 2024, 10:02

ER

What is the probability that an integer chosen from a set P, which con

655-705 (Hard) | Probability +2 tags

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

Bunuel

17 Jul 2017, 23:07

7

2

3,640

by: bumpbot

21 Oct 2025, 09:00

ER

In a multiple-choice test, each question is followed by n options.

705-805 (Hard) | Probability

705-805 (Hard) | Probability hide tags

Bunuel

17 Jul 2017, 23:17

26

14

5,386

by: yashhw

26 Mar 2026, 23:14

ER

ABC is a triangle with BC = AC = 6. D is a point on AB. What is the

605-655 (Medium) | Geometry

605-655 (Medium) | Geometry hide tags

Bunuel

17 Jul 2017, 23:19

2

7

2,306

by: gmat4varun

19 Jul 2017, 01:29

ER

In the diagram below, what is the length of RS?

705-805 (Hard) | Geometry

705-805 (Hard) | Geometry hide tags

Bunuel

17 Jul 2017, 23:25

13

9

4,686

by: bumpbot

16 Jun 2023, 14:11

ER

In the diagram below, P = g + c − e and Q = a + f . What is the value

655-705 (Hard) | Geometry

655-705 (Hard) | Geometry hide tags

Bunuel

17 Jul 2017, 23:28

2

6

2,478

by: Shobhit7

25 Jul 2017, 01:34

ER

In the diagram below, triangle ABC is right-angled at B. What is the

655-705 (Hard) | Geometry

655-705 (Hard) | Geometry hide tags

Bunuel

17 Jul 2017, 23:31

8

3,815

by: ravigupta2912

10 Apr 2020, 09:57

ER

In the diagram below, triangle ABC is right-angled at B. D and E are

605-655 (Medium) | Geometry

605-655 (Medium) | Geometry hide tags

Bunuel

17 Jul 2017, 23:32

1

3

2,398

by: energetics

01 Mar 2019, 11:10

ER

In the diagram below, P and Q are the centers of the two circles. What

805+ (Hard) | Geometry

805+ (Hard) | Geometry hide tags

Bunuel

17 Jul 2017, 23:34

31

13

4,769

by: bumpbot

08 Jun 2023, 07:50

ER

In the diagram below, ABCD is a square with a circle inscribed inside.

655-705 (Hard) | Geometry

655-705 (Hard) | Geometry hide tags

Bunuel

17 Jul 2017, 23:36

8

5

3,185

by: bumpbot

21 Dec 2023, 23:21

ER

If c = 3.905 X 10^x and x is a negative integer, what is x?

555-605 (Medium) | Exponents, Inequalities

555-605 (Medium) | Exponents, Inequalities hide tags

Mo2men

18 Jul 2017, 09:18

5

2

2,247

by: bumpbot

17 Jan 2024, 21:59

ER

A triangle has side lengths of a, b, and c centimeters. Does each angl

705-805 (Hard) | Geometry

705-805 (Hard) | Geometry hide tags

1, 2

moonwalking

19 Jul 2017, 14:04

582

26

51,356

by: Kinshook

10 Feb 2025, 21:34

ER

In a two-month survey of shoppers, each shopper bought one of two bran

555-605 (Medium) | Percent and Interest Problems, Word Problems

555-605 (Medium) | Percent and Interest Problems, Word Problems hide tags

moonwalking

19 Jul 2017, 14:20

296

13

45,736

by: bumpbot

30 Apr 2026, 05:57

ER

If a*b is an even integer, is b a multiple of 2?

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

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

chetan2u

19 Jul 2017, 21:32

5

7

2,812

by: Purnank

05 Oct 2024, 07:03

ER

If ∠B, ∠ADB are 90o, A=60o, and C=30o, what is the area of the triangl

605-655 (Medium) | Geometry

605-655 (Medium) | Geometry hide tags

MathRevolution

20 Jul 2017, 01:04

3

2,350

by: bumpbot

02 Apr 2023, 10:08

ER

Does regular polygon X have more than 6 sides?

705-805 (Hard) | Geometry

705-805 (Hard) | Geometry hide tags

Bunuel

21 Jul 2017, 05:01

21

10

6,758

by: bumpbot

12 Jun 2023, 21:52

ER

In the diagram below, PQ is a diameter of the circle having center at

805+ (Hard) | Geometry

805+ (Hard) | Geometry hide tags

Bunuel

23 Jul 2017, 23:18

21

11

4,940

by: fskilnik

20 Apr 2020, 09:45

ER

In the diagram below, a rectangle ABCD is drawn inside a semicircle.

655-705 (Hard) | Geometry

655-705 (Hard) | Geometry hide tags

Bunuel

23 Jul 2017, 23:20

12

9

3,178

by: bumpbot

29 Oct 2022, 23:11

ER

In the diagram below, PQR is a triangle, right-angled at Q. A point S

805+ (Hard) | Geometry

805+ (Hard) | Geometry hide tags

Bunuel

23 Jul 2017, 23:22

17

5

4,597

by: bumpbot

24 Mar 2022, 02:09

ER

A right circular cone is such that it perfectly fits inside a hollow

655-705 (Hard) | Geometry

655-705 (Hard) | Geometry hide tags

Bunuel

23 Jul 2017, 23:23

6

3

2,155

by: bumpbot

01 Jan 2019, 08:22

ER

A piece of thread is uniformly strung around a right circular cylinder

555-605 (Medium) | Geometry

555-605 (Medium) | Geometry hide tags

Bunuel

23 Jul 2017, 23:25

5

3

2,016

by: bumpbot

30 Sep 2023, 08:49

ER

Between a cube and a right circular cylinder, does the cube have a

605-655 (Medium) | Geometry

605-655 (Medium) | Geometry hide tags

Bunuel

23 Jul 2017, 23:26

8

4

2,311

by: bumpbot

21 Jul 2020, 04:42

ER

The volume of a right circular cylinder equals half the volume of a

805+ (Hard) | Geometry

805+ (Hard) | Geometry hide tags

Bunuel

23 Jul 2017, 23:28

8

2

2,922

by: bumpbot

07 Sep 2023, 07:18

ER

What is the area of the quadrilateral ABCD shown in the diagram below?

555-605 (Medium) | Geometry

555-605 (Medium) | Geometry hide tags

Bunuel

23 Jul 2017, 23:30

3

3,973

by: jedit

25 Jul 2017, 01:26

ER

ABCDEFGH is a regular octagon. What is the area of triangle ABC?

655-705 (Hard) | Geometry

655-705 (Hard) | Geometry hide tags

Bunuel

23 Jul 2017, 23:34

7

4

10,286

by: bumpbot

04 Feb 2023, 20:51

ER

ABCD is a quadrilateral, as shown in the diagram below. What is the

805+ (Hard) | Geometry

805+ (Hard) | Geometry hide tags

Bunuel

23 Jul 2017, 23:35

20

9

3,211

by: bumpbot

30 Nov 2023, 11:16

ER

A pathway, 6 meters wide, is to be constructed around the boundary of

655-705 (Hard) | Geometry

655-705 (Hard) | Geometry hide tags

Bunuel

23 Jul 2017, 23:35

7

6

2,571

by: varshas044

11 Oct 2022, 11:27

ER

In the diagram below, what is the measure of ∠BCD?

505-555 (Easy) | Geometry

505-555 (Easy) | Geometry hide tags

Bunuel

24 Jul 2017, 23:17

2

5

3,798

by: sasyaharry

07 Nov 2017, 11:15

ER

In the diagram below, what is the measure of the non-reflex angle form

655-705 (Hard) | Geometry

655-705 (Hard) | Geometry hide tags

Bunuel

24 Jul 2017, 23:19

4

5

3,141

by: bumpbot

25 Dec 2019, 13:00

ER

In the diagram below, AB is parallel to CD and BC is parallel to DF.

555-605 (Medium) | Geometry

555-605 (Medium) | Geometry hide tags

Bunuel

24 Jul 2017, 23:21

1

2

3,230

by: saurabhSuman

29 Jul 2017, 01:37

ER

What is the value of x? (1) |y| ≤ −3x (2) |5x − 1| = x + 7

655-705 (Hard) | Absolute Values, Inequalities

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

Bunuel

24 Jul 2017, 23:22

5

9

2,540

by: mehrotrayashraj

29 Jul 2017, 07:13

ER

If x + y + z < 1, is z < −1?

705-805 (Hard) | Inequalities

705-805 (Hard) | Inequalities hide tags

Bunuel

24 Jul 2017, 23:25

3

1,893

by: bumpbot

29 Jan 2020, 07:15

ER

Is x > y? (1) |x| > y. (2) x + y > 0.

655-705 (Hard) | Absolute Values, Inequalities

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

Bunuel

24 Jul 2017, 23:27

8

10

2,714

by: bumpbot

15 Oct 2022, 06:53

ER

If x and y are integers, is x > −9?

555-605 (Medium) | Absolute Values, Inequalities

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

Bunuel

24 Jul 2017, 23:29

3

2

2,002

by: Madhavi1990

28 Jul 2017, 11:50

ER

Is x < y^2 ?

705-805 (Hard) | Absolute Values +2 tags

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

RonPurewal

25 Jul 2017, 00:50

27

7

4,048

by: bumpbot

18 Jan 2026, 01:46

ER

Mary buys several pencils that cost 30 cents and 24 cents. How many of

555-605 (Medium) | Algebra

555-605 (Medium) | Algebra hide tags

MathRevolution

25 Jul 2017, 01:25

3

2,821

by: MathRevolution

27 Jul 2017, 01:08

ER

Is the slope of the line l equal to -1/5?

655-705 (Hard) | Coordinate Plane

655-705 (Hard) | Coordinate Plane hide tags

Bunuel

25 Jul 2017, 03:59

12

5

2,642

by: bumpbot

03 Jul 2023, 08:33

ER

In the diagram below, what is the length of the line segment AC?

705-805 (Hard) | Coordinate Plane

705-805 (Hard) | Coordinate Plane hide tags

Bunuel

25 Jul 2017, 22:45

13

5

5,474

by: Debashis Roy

11 Mar 2019, 23:04