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

176

15

78,816

by: thisisakr

16 Apr 2026, 11:46

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100 Hardest and easiest questions for DS as of April 2026

1, 2

Bunuel

01 Jan 2026, 05:45

856

24

188,580

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

488,014

by: bb

29 Aug 2025, 13:27

ER

How long will it take machine M to fill an order for x widgets if the

555-605 (Medium) | Work and Rate Problems

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

Bunuel

19 Feb 2018, 23:20

15

6

4,935

by: bumpbot

02 Jul 2021, 08:35

ER

If (x + 3)(x − 2) − (x − 2)(x − 2) = y(x − 2), what is the value of x?

705-805 (Hard) | Algebra

705-805 (Hard) | Algebra hide tags

Bunuel

09 Dec 2019, 00:37

15

5

2,953

by: bumpbot

29 Jun 2021, 00:51

ER

A triangle has sides of length 12, 15 and k units. What is the length

705-805 (Hard) | Geometry

705-805 (Hard) | Geometry hide tags

Bunuel

11 May 2020, 05:45

15

4

3,004

by: Thekingmaker

03 Jun 2021, 02:27

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Does x = 3? (1) (x - 3)(y - 1)=0 (2) (x - 3)^2 + (y - 1)^2 = 0

555-605 (Medium) | Algebra

555-605 (Medium) | Algebra hide tags

Bunuel

03 May 2021, 01:30

15

2

2,633

by: TarunKumar1234

03 May 2021, 10:51

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For each day at sea a sailor is paid a fixed sum. For each day ahead

605-655 (Medium) | Word Problems

605-655 (Medium) | Word Problems hide tags

Bunuel

24 Oct 2019, 22:28

15

3,913

by: bumpbot

20 Apr 2021, 14:59

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If x is a positive integer, is x^3 - 3x^2 + 2x divisible by 4?

555-605 (Medium) | Multiples and Factors

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

Bunuel

12 Sep 2019, 21:30

15

12

5,784

by: Bunuel

15 Apr 2021, 10:49

ER

If 10x + 10y + 16x^2 + 25y^2 = 10 + Z, what is the value of x + y?

505-555 (Easy) | Algebra

505-555 (Easy) | Algebra hide tags

Bunuel

18 Mar 2016, 00:13

15

4

6,461

by: bumpbot

05 Apr 2021, 15:45

ER

If triangles ABC and CDE are each equilateral, what is the sum of the

605-655 (Medium) | Geometry

605-655 (Medium) | Geometry hide tags

Bunuel

21 Feb 2018, 21:49

15

5

3,001

by: CEdward

17 Feb 2021, 10:01

ER

A circular pizza is cut into eight wedge-shaped slices of equal size.

Sub 505 (Easy) | Geometry

Sub 505 (Easy) | Geometry hide tags

enigma123

18 Mar 2012, 11:05

15

8

15,797

by: bumpbot

27 Dec 2020, 08:31

ER

A room is 480 centimeters wide and 520 centimeters long. If n identica

605-655 (Medium) | Word Problems

605-655 (Medium) | Word Problems hide tags

Bunuel

10 Jun 2015, 04:00

15

9

9,036

by: bumpbot

29 Oct 2020, 03:36

ER

What is the value of integer n if the inequality 30 > n > 9 holds?

Sub 505 (Easy) | Multiples and Factors, Remainders

Sub 505 (Easy) | Multiples and Factors, Remainders hide tags

Bunuel

16 Jul 2015, 01:22

15

9

4,472

by: bumpbot

06 Aug 2020, 07:15

ER

If |x – 6| = 3, what is the value of x?

505-555 (Easy) | Absolute Values, Multiples and Factors

505-555 (Easy) | Absolute Values, Multiples and Factors hide tags

Bunuel

06 Dec 2016, 00:47

15

8

6,977

by: bumpbot

07 May 2020, 20:44

ER

On a certain field trip, the ratio of teachers to students was 3 : 7.

505-555 (Easy) | Fractions and Ratios

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

Bunuel

14 Nov 2014, 09:57

15

7

6,112

by: bumpbot

05 May 2020, 06:14

ER

Each of the numbers a, b, c, d is equal to -1, 0, or 1. What is the

705-805 (Hard) | Algebra

705-805 (Hard) | Algebra hide tags

Bunuel

12 Nov 2014, 10:08

15

5

4,533

by: bumpbot

25 Mar 2020, 16:08

ER

When an international relief agency extended loans to 28

555-605 (Medium) | Overlapping Sets

555-605 (Medium) | Overlapping Sets hide tags

MilindJ

27 Oct 2012, 13:39

15

8

5,190

by: bumpbot

04 Feb 2020, 02:33

ER

If x is a positive integer, is x^(1/2) an integer ?

555-605 (Medium) | Number Properties

555-605 (Medium) | Number Properties hide tags

Bunuel

15 Jan 2015, 07:09

15

12

5,386

by: niks18

16 Jan 2020, 11:11

ER

A circle with center (1, 0) and radius 2 lies in the

705-805 (Hard) | Coordinate Plane

705-805 (Hard) | Coordinate Plane hide tags

rxs0005

19 Mar 2011, 06:43

15

7

4,892

by: bumpbot

09 Dec 2019, 01:26

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

3,353

by: bumpbot

27 Nov 2019, 05:32

ER

In the quarter circle above, what is the area of the shaded region?

705-805 (Hard) | Geometry

705-805 (Hard) | Geometry hide tags

Bunuel

17 Sep 2018, 22:20

15

13

4,606

by: David nguyen

11 Oct 2019, 18:23

Two trains 1& 2 start simultaneously and run on parallel

555-605 (Medium) | Distance and Speed Problems

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

innocous

23 Nov 2013, 04:57

15

3

5,715

by: sharathnair14

01 Oct 2019, 07:39

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What is 4x^2 ? (1) |2x – 2| + |2x + 2| = 4 (2) |3x – 1| + |3x + 1| = 6

805+ (Hard) | Absolute Values

805+ (Hard) | Absolute Values hide tags

Bunuel

12 Jul 2019, 01:10

15

8

4,262

by: freedom128

30 Jul 2019, 18:35

ER

If y is a positive integer, what is the units digit of y?

555-605 (Medium) | Number Properties

555-605 (Medium) | Number Properties hide tags

JS1290

30 Sep 2017, 20:03

15

8

3,652

by: chetan2u

19 Jun 2019, 20:10

ER

Is |x| + |x - 1| = 1?

555-605 (Medium) | Absolute Values

555-605 (Medium) | Absolute Values hide tags

rahulms

22 Jan 2010, 07:42

15

7

5,487

by: MSIMBA

14 Jun 2019, 20:20

ER

If the circle has radius 6, what is the area of the triangle? (1) AC

605-655 (Medium) | Geometry

605-655 (Medium) | Geometry hide tags

Bunuel

26 Feb 2015, 06:45

15

12

11,011

by: CrackverbalGMAT

05 Jun 2019, 19:35

ER

Is |a - b| + |c - b|= |c -a| ?

655-705 (Hard) | Absolute Values, Inequalities

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

Bunuel

25 May 2016, 04:51

15

10

3,494

by: bumpbot

22 Mar 2019, 02:49

ER

How many prime factors does N have?

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

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

piyush26

29 Oct 2018, 21:47

15

8

3,364

by: gmatexam439

02 Nov 2018, 04:12

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Is N=W ?

555-605 (Medium) | Absolute Values

555-605 (Medium) | Absolute Values hide tags

Poma777

30 Nov 2011, 19:54

15

6

4,758

by: BloomingLotus

12 Sep 2017, 09:12

ER

Is the probability of Arif and Alex, both being present in class, less

655-705 (Hard) | Probability

655-705 (Hard) | Probability hide tags

Tan2017

07 May 2017, 01:35

15

1

3,487

by: Bunuel

07 May 2017, 01:45

ER

What is the ratio of y to x?

Poor Quality

Poor Quality hide tags

SirGMAT

02 Dec 2014, 08:21

15

6

7,084

by: Bunuel

02 Dec 2014, 08:21

ER

Is rst = 1?

555-605 (Medium) | Algebra

555-605 (Medium) | Algebra hide tags

sudhagar

07 Nov 2013, 02:08

15

6

19,812

by: Bunuel

07 Nov 2013, 02:10

ER

From 1994 to 1995, the revenue of a company increased x percent. From

705-805 (Hard) | Percent and Interest Problems

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

Bunuel

03 Jan 2021, 11:19

14

8

5,695

by: bumpbot

23 Apr 2026, 23:03

ER

Laser diodes and micro-controllers are among the components used to ma

805+ (Hard) | Percent and Interest Problems

805+ (Hard) | Percent and Interest Problems hide tags

Vishh13

05 Oct 2020, 11:25

14

5

2,224

by: bumpbot

14 Apr 2026, 03:05

ER

If c and d are positives integers, d >= 2 and c*d is the square of a

705-805 (Hard) | Min-Max Problems, Number Properties

705-805 (Hard) | Min-Max Problems, Number Properties hide tags

Bunuel

19 Feb 2020, 03:35

14

4

4,831

by: Gmat860sanskar

03 Apr 2026, 11:18

ER

At a professional training conference, 44 attendees signed up for the

805+ (Hard) | Overlapping Sets

805+ (Hard) | Overlapping Sets hide tags

Bunuel

29 Mar 2026, 19:00

14

4

410

by: Aman2487

03 Apr 2026, 01:24

A village is under attacked by a deadly virus species.

655-705 (Hard) | Sequences

655-705 (Hard) | Sequences hide tags

Asifpirlo

05 Aug 2013, 01:14

14

4

4,503

by: bumpbot

25 Mar 2026, 14:57

ER

What are some possible signs of impending rainfall in Exville today?

Sub 505 (Easy) | Non-Math Related

Sub 505 (Easy) | Non-Math Related hide tags

guddo

14 Aug 2024, 02:39

14

4

4,229

by: JustKeepGoing

22 Mar 2026, 02:20

ER

If a, b, and c are each positive integers greater than 1 is the produc

505-555 (Easy) | Multiples and Factors

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

devinawilliam83

04 Mar 2012, 23:29

14

4

12,302

by: Dongfeng

12 Feb 2026, 10:19

ER

A box contains 10 objects. Each object is either blue or red, and each

705-805 (Hard) | Probability

705-805 (Hard) | Probability hide tags

BrentGMATPrepNow

05 Aug 2022, 07:08

14

3

2,570

by: egmat

12 Feb 2026, 04:48

ER

The median age of seven children in group A was 13. The median age of

805+ (Hard) | Statistics and Sets Problems

805+ (Hard) | Statistics and Sets Problems hide tags

Bunuel

12 Nov 2024, 01:30

14

5

2,524

by: nikfield

06 Feb 2026, 05:59

ER

Bill rides his bile to work in the morning on a route that is 18 km lo

655-705 (Hard) | Distance and Speed Problems

655-705 (Hard) | Distance and Speed Problems hide tags

Bunuel

09 Jul 2018, 00:41

14

3

6,039

by: bumpbot

27 Jan 2026, 05:59

ER

If x^2 + y^2 = 100, what is the value of (x - y)^2 ?

555-605 (Medium) | Algebra

555-605 (Medium) | Algebra hide tags

GMATNinja

17 Apr 2022, 23:07

14

6

7,665

by: bumpbot

25 Jan 2026, 22:49

ER

If a, b, c and n are positive integers and m = a^4*b^3*c^n, how many

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

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

Bunuel

13 Jun 2023, 08:00

14

5

1,976

by: bumpbot

22 Jan 2026, 13:09

ER

Joanna worked 5 shifts at a used car lot last week. Joanna earns $200

805+ (Hard) | Word Problems

805+ (Hard) | Word Problems hide tags

Bunuel

06 Apr 2022, 04:30

14

5

3,435

by: bumpbot

21 Jan 2026, 09:18

ER

If f(a) = a^2 + 3a, then the value of 3f(a − b) is how many times grea

555-605 (Medium) | Functions and Custom Characters

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

Bunuel

06 May 2020, 02:17

14

9

7,759

by: bumpbot

13 Jan 2026, 08:14

ER

On Thursday afternoon, two machines, J and R, ran continuously at unif

555-605 (Medium) | Work and Rate Problems

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

Bunuel

09 May 2017, 03:07

14

12

5,013

by: TommasoP

11 Jan 2026, 08:03

ER

In the x-y plane, PQ is a straight line. The coordinate of point P is

805+ (Hard) | Coordinate Plane, Geometry

805+ (Hard) | Coordinate Plane, Geometry hide tags

EgmatQuantExpert

07 Mar 2019, 23:04

14

10

5,313

by: bumpbot

07 Jan 2026, 15:42

ER

How many 4 member committee can be formed from a group of x men and y

705-805 (Hard) | Combinations

705-805 (Hard) | Combinations hide tags

Bunuel

12 Jan 2022, 06:30

14

7

4,617

by: bumpbot

05 Jan 2026, 06:01

ER

The petrol tank of a car started to leak. Did the tank get empty in mo

705-805 (Hard) | Work and Rate Problems

705-805 (Hard) | Work and Rate Problems hide tags

siddharthkapoor

02 Nov 2020, 05:04

14

6

3,930

by: Bunuel

02 Jan 2026, 05:34

ER

If x and y are prime integers, what is x + y?

655-705 (Hard) | Number Properties

655-705 (Hard) | Number Properties hide tags

Bunuel

12 Jul 2013, 19:51

14

19

6,507

by: bumpbot

01 Jan 2026, 05:14

ER

A number of apples and oranges are to be distributed evenly among a nu

805+ (Hard) | Word Problems

805+ (Hard) | Word Problems hide tags

Bunuel

23 Mar 2022, 01:30

14

5

7,958

by: bumpbot

01 Jan 2026, 02:25