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

179

15

79,071

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

188,728

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

488,287

by: bb

29 Aug 2025, 13:27

ER

If S1 is the set of all odd positive integers from 1 to n1 and S2 is

655-705 (Hard) | Arithmetic, Sequences

655-705 (Hard) | Arithmetic, Sequences hide tags

TeamGMATIFY

17 Feb 2016, 23:11

12

3

4,228

by: bumpbot

06 Feb 2025, 09:57

ER

If Machine X can produce 80 widgets in 4 hours, how long would it take

Sub 505 (Easy) | Work and Rate Problems

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

Bunuel

17 Feb 2016, 03:39

6

5

4,755

by: bumpbot

05 Dec 2019, 19:48

ER

What is the area of square ABCD?

Sub 505 (Easy) | Geometry

Sub 505 (Easy) | Geometry hide tags

Bunuel

17 Feb 2016, 03:35

7

8,143

by: bumpbot

05 Dec 2019, 19:45

ER

What is the value of x^3?

Sub 505 (Easy) | Absolute Values, Algebra

Sub 505 (Easy) | Absolute Values, Algebra hide tags

Bunuel

17 Feb 2016, 03:33

21

12

12,655

by: bumpbot

15 Mar 2025, 02:07

ER

If P, Q, R, and S are all integers, is product PQRS even?

Sub 505 (Easy) | Number Properties

Sub 505 (Easy) | Number Properties hide tags

Bunuel

17 Feb 2016, 03:13

8

15

9,177

by: Bunuel

01 Nov 2020, 01:46

ER

Compound P contains just three chemicals — X, Y, and Z. The three chem

505-555 (Easy) | Fractions and Ratios, Mixture Problems

505-555 (Easy) | Fractions and Ratios, Mixture Problems hide tags

Bunuel

16 Feb 2016, 00:55

8

4

5,032

by: bumpbot

18 Jul 2020, 08:09

ER

On a number line, integer C is between integers A and B. What is the

655-705 (Hard) | Arithmetic

655-705 (Hard) | Arithmetic hide tags

Bunuel

16 Feb 2016, 00:53

8

3,753

by: bumpbot

10 Jul 2023, 01:36

ER

If k is a non-negative integer, what is the last digit of

655-705 (Hard) | Arithmetic +2 tags

655-705 (Hard) | Arithmetic, Exponents, Number Properties hide tags

TeamGMATIFY

15 Feb 2016, 17:49

10

2

3,054

by: bumpbot

10 Jan 2026, 15:28

ER

What is the perimeter of isosceles triangle LMN?

555-605 (Medium) | Geometry

555-605 (Medium) | Geometry hide tags

zxcvbnmas

15 Feb 2016, 14:09

30

9

16,606

by: bumpbot

01 Apr 2023, 07:02

ER

Is x < - 20 ?

605-655 (Medium) | Algebra, Inequalities

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

Ekland

15 Feb 2016, 08:23

39

9

9,368

by: bumpbot

28 Jan 2022, 16:20

ER

What is the value of a + b + c? (1) (a + b + c)^2 = 0 (2) a^2 + b^2 +

555-605 (Medium) | Algebra

555-605 (Medium) | Algebra hide tags

MathRevolution

14 Feb 2016, 23:38

2

4

2,469

by: bumpbot

13 Sep 2023, 21:44

ER

One number is five more than half a second number, which is evenly div

555-605 (Medium) | Multiples and Factors, Number Properties

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

Bunuel

14 Feb 2016, 11:14

4

3,718

by: bumpbot

20 Jan 2024, 10:56

ER

If gasoline costs $1.09 per gallon and alcohol costs $1.81, what fract

555-605 (Medium) | Fractions and Ratios, Word Problems

555-605 (Medium) | Fractions and Ratios, Word Problems hide tags

Bunuel

14 Feb 2016, 11:10

12

5

3,804

by: Tonkotsu

06 Feb 2021, 10:34

ER

What is the range of a sports car on one tank of gasoline?

Sub 505 (Easy) | Word Problems

Sub 505 (Easy) | Word Problems hide tags

Bunuel

14 Feb 2016, 11:08

1

4

2,646

by: bumpbot

03 May 2021, 07:10

ER

A set S contains the following elements: {7, 11, 15, 19, 23, x}. What

605-655 (Medium) | Number Properties, Statistics and Sets Problems

605-655 (Medium) | Number Properties, Statistics and Sets Problems hide tags

Bunuel

14 Feb 2016, 05:41

15

8

11,279

by: bumpbot

31 Mar 2024, 00:59

ER

Is y = 3? (1) (y - 3)(x - 4) = 0 (2) (x - 4) = 0

555-605 (Medium) | Algebra

555-605 (Medium) | Algebra hide tags

Bunuel

14 Feb 2016, 05:32

13

4

10,181

by: Chethan92

05 Nov 2019, 11:01

ER

If a triangle has one side of 3 cm and another side of 4 cm, how long

555-605 (Medium) | Geometry

555-605 (Medium) | Geometry hide tags

Bunuel

14 Feb 2016, 04:16

6

3

7,303

by: bumpbot

20 Sep 2022, 11:21

ER

Is xy < 10? (1) x < 5 and y < 2 (2) x < −3 and y < −1

505-555 (Easy) | Inequalities

505-555 (Easy) | Inequalities hide tags

Bunuel

14 Feb 2016, 04:13

2

2,353

by: MathRevolution

14 Feb 2016, 23:51

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Is x between 0 and 1? (1) x > x^2 (2) x > x^3

555-605 (Medium) | Inequalities

555-605 (Medium) | Inequalities hide tags

Bunuel

14 Feb 2016, 04:12

1

3

2,784

by: bumpbot

21 Jul 2023, 21:44

ER

A piece of wood is cut into three pieces that have lengths in the rati

Sub 505 (Easy) | Fractions and Ratios

Sub 505 (Easy) | Fractions and Ratios hide tags

Bunuel

14 Feb 2016, 03:42

2

3,883

by: bumpbot

22 May 2018, 23:47

ER

What is the radius, in inches, of Circle O?

655-705 (Hard) | Geometry

655-705 (Hard) | Geometry hide tags

Bunuel

14 Feb 2016, 03:06

3

4

2,780

by: GGMU

15 Feb 2016, 10:43

ER

If x + 3y − 3 = 0, what is the value of x?

505-555 (Easy) | Algebra

505-555 (Easy) | Algebra hide tags

Bunuel

14 Feb 2016, 03:03

3

3,368

by: rhine29388

17 May 2016, 15:01

ER

If m is not equal to k, is |x^2 - y^2| > 0?

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

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

TeamGMATIFY

13 Feb 2016, 11:12

9

5

7,880

by: bumpbot

25 May 2021, 00:48

ER

In a museum X, a total entrance fee is $x plus $z each person greater

605-655 (Medium) | Inequalities

605-655 (Medium) | Inequalities hide tags

MathRevolution

10 Feb 2016, 21:59

4

6

2,925

by: KarishmaB

26 Aug 2019, 21:45

ER

If z and x are integers with absolute values greater than 1, is z^x

655-705 (Hard) | Exponents, Inequalities

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

Bunuel

09 Feb 2016, 09:54

14

8

5,862

by: bumpbot

04 Dec 2025, 02:33

ER

What is the value of (x + 3)^2 ?

555-605 (Medium) | Absolute Values, Algebra

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

Bunuel

07 Feb 2016, 10:51

2

4

2,347

by: AkshdeepS

06 Mar 2018, 05:23

ER

Is x divisible by 9?

555-605 (Medium) | Multiples and Factors, Remainders

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

Bunuel

07 Feb 2016, 10:49

1

3

3,980

by: amanvermagmat

18 Dec 2017, 22:57

ER

Currently, 30% of The Flower Company’s total revenue comes from sales

605-655 (Medium) | Word Problems

605-655 (Medium) | Word Problems hide tags

Bunuel

07 Feb 2016, 10:47

6

5

2,927

by: bumpbot

04 Feb 2026, 00:17

ER

If m and n are positive integers, what is the value of p?

Sub 505 (Easy) | Exponents, Number Properties

Sub 505 (Easy) | Exponents, Number Properties hide tags

Bunuel

07 Feb 2016, 10:45

3

3,031

by: gurmukh

02 Apr 2020, 09:21

ER

Five persons sat next to each other around a circular table to play ca

555-605 (Medium) | Combinations

555-605 (Medium) | Combinations hide tags

Bunuel

07 Feb 2016, 10:15

18

3

6,689

by: bumpbot

08 Nov 2023, 06:44

ER

A, b, c are diameters of 3 circles respectively. If ∠Z=90o, what is th

655-705 (Hard) | Geometry

655-705 (Hard) | Geometry hide tags

MathRevolution

08 Feb 2016, 00:04

10

7

3,052

by: CuriosStud

30 Jan 2022, 08:11

ER

Is integer x<−20?

555-605 (Medium) | Algebra, Inequalities

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

zxcvbnmas

06 Feb 2016, 18:48

24

5

7,954

by: bumpbot

05 Aug 2025, 08:05

ER

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

655-705 (Hard) | Number Properties

655-705 (Hard) | Number Properties hide tags

zxcvbnmas

05 Feb 2016, 18:10

43

8

13,296

by: bumpbot

12 Apr 2024, 12:36

ER

If r, s are positive integers, is r/s a terminating decimal?

555-605 (Medium) | Fractions and Ratios, Number Properties

555-605 (Medium) | Fractions and Ratios, Number Properties hide tags

MathRevolution

04 Feb 2016, 18:25

38

6

9,574

by: bumpbot

18 Oct 2025, 08:40

ER

Is the nth root of n greater than the cube root of 3?

Sub 505 (Easy) | Roots

Sub 505 (Easy) | Roots hide tags

zxcvbnmas

04 Feb 2016, 18:18

11

6

7,313

by: bumpbot

17 Oct 2022, 01:41

ER

Is f(n) > f(n 1)? (1) n = 8 (2) f(n) = n - 1

555-605 (Medium) | Functions and Custom Characters

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

zxcvbnmas

04 Feb 2016, 17:50

27

12

13,134

by: bumpbot

23 Sep 2025, 05:39

ER

Is x>0? 1) x^2=9x 2) x^2=81

555-605 (Medium) | Algebra

555-605 (Medium) | Algebra hide tags

Abrax99

02 Feb 2016, 16:45

32

10

12,919

by: bumpbot

21 Sep 2025, 01:57

ER

If 53 students are enrolled in both the cooking class and the painting

505-555 (Easy) | Statistics and Sets Problems

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

Bunuel

02 Feb 2016, 16:21

9

6

7,153

by: bhavyagmat

04 Nov 2025, 08:47

ER

How much wallpaper is needed to cover the two largest walls of a narro

605-655 (Medium) | Geometry

605-655 (Medium) | Geometry hide tags

Bunuel

02 Feb 2016, 02:06

3

13

4,860

by: bumpbot

15 Aug 2018, 07:41

ER

Is m, which does not equal zero, a positive number?

Sub 505 (Easy) | Algebra, Number Properties

Sub 505 (Easy) | Algebra, Number Properties hide tags

Bunuel

02 Feb 2016, 02:05

1

3

3,038

by: bumpbot

31 Oct 2017, 05:51

ER

The centers of the three circles lie on one line (the circles intersec

655-705 (Hard) | Geometry

655-705 (Hard) | Geometry hide tags

Bunuel

01 Feb 2016, 05:09

8

6

4,614

by: ramlala

04 Apr 2021, 06:09

ER

On the x-y coordinate plane, a point (1,2) is on a parabola y=ax^2+bx+

655-705 (Hard) | Functions and Custom Characters

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

MathRevolution

31 Jan 2016, 21:39

10

4

3,596

by: luffy_ueki

02 Jan 2018, 22:13

ER

Where is the center of a circle on the xy plane?

655-705 (Hard) | Coordinate Plane, Geometry

655-705 (Hard) | Coordinate Plane, Geometry hide tags

Bunuel

31 Jan 2016, 08:26

15

5

3,359

by: bumpbot

27 Nov 2019, 05:32

ER

The positive integer C is a perfect cube; what is its value?

555-605 (Medium) | Number Properties

555-605 (Medium) | Number Properties hide tags

Bunuel

31 Jan 2016, 08:24

1

964

by: chetan2u

02 Jan 2021, 04:12

ER

If a is to b as b is to c, is c positive?

505-555 (Easy) | Algebra

505-555 (Easy) | Algebra hide tags

Bunuel

31 Jan 2016, 08:24

3

4

2,897

by: bumpbot

12 Sep 2023, 11:10

ER

Does x = y?

555-605 (Medium) | Algebra

555-605 (Medium) | Algebra hide tags

Bunuel

31 Jan 2016, 08:23

2

4

2,604

by: Donnie84

03 Feb 2016, 19:52

ER

What is the diameter of the wheel above?

605-655 (Medium) | Geometry

605-655 (Medium) | Geometry hide tags

Bunuel

31 Jan 2016, 08:20

6

3

2,465

by: kajaldaryani46

14 Oct 2020, 11:19

ER

How long is MN?

555-605 (Medium) | Geometry

555-605 (Medium) | Geometry hide tags

Bunuel

31 Jan 2016, 08:19

4

2

1,990

by: Nunuboy1994

06 Sep 2017, 23:40

ER

Is the product cd positive?

555-605 (Medium) | Inequalities

555-605 (Medium) | Inequalities hide tags

Bunuel

31 Jan 2016, 07:37

3

5

2,392

by: BrentGMATPrepNow

03 Jun 2018, 08:08

ER

In the expression 3x − 2y < z, is y positive?

605-655 (Medium) | Inequalities

605-655 (Medium) | Inequalities hide tags

Bunuel

31 Jan 2016, 07:37

2

4

3,035

by: bumpbot

14 Mar 2022, 12:14