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

175

15

78,529

by: thisisakr

16 Apr 2026, 11:46

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100 Hardest and easiest questions for DS as of March 2026

1, 2

Bunuel

01 Jan 2026, 05:45

854

24

188,416

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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

487,758

by: bb

29 Aug 2025, 13:27

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Irene and Tina are two of the five members of a swimming team

805+ (Hard) | Statistics and Sets Problems, Word Problems

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

kevincan

19 Feb 2026, 08:07

7

2

410

by: Edskore

19 Feb 2026, 11:59

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

555-605 (Medium) | Statistics and Sets Problems

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MathRevolution

15 Aug 2017, 01:30

8

4

3,162

by: egmat

19 Feb 2026, 06:33

Sarah is in a room with 6 other children. If the other child

705-805 (Hard) | Statistics and Sets Problems

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

venmic

07 Sep 2012, 21:36

99

8

18,792

by: bumpbot

18 Feb 2026, 08:38

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During an experiment, some grain was removed from each of the 10 sacks

605-655 (Medium) | Statistics and Sets Problems

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

ExpertsGlobal5

09 Feb 2026, 20:00

5

4

518

by: ExpertsGlobal5

15 Feb 2026, 05:45

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Is the standard deviation of a certain set greater than 5,000?

705-805 (Hard) | Statistics and Sets Problems

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

AmitGoyalJamboree

20 Oct 2015, 05:42

68

16

15,485

by: egmat

12 Feb 2026, 04:59

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The average (arithmetic mean) of 10 distinct odd integers in a set is

805+ (Hard) | Statistics and Sets Problems

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Bunuel

13 Jul 2017, 23:54

22

14

4,412

by: bumpbot

11 Feb 2026, 14:23

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There are 5 integers such that the difference of the biggest number an

805+ (Hard) | Statistics and Sets Problems

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rawat2583

05 Mar 2019, 21:24

11

4

2,811

by: Dongfeng

11 Feb 2026, 05:33

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What is the standard deviation of a, b and c?

655-705 (Hard) | Statistics and Sets Problems

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MathRevolution

27 Sep 2018, 00:55

21

5

5,311

by: pappal

10 Feb 2026, 11:34

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When one new number is included in an existing set of 6 numbers

605-655 (Medium) | Statistics and Sets Problems

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

chetan86

12 Sep 2014, 07:24

26

6

9,889

by: bumpbot

10 Feb 2026, 10:51

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Some Nitrogen was added into each of the 5 Nitrogen cylinders in

555-605 (Medium) | Statistics and Sets Problems

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

ExpertsGlobal5

04 Feb 2026, 22:25

6

4

539

by: ExpertsGlobal5

07 Feb 2026, 22:30

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Lee, Dimitra, and Jan, each had to pay a fine for accidental property

605-655 (Medium) | Statistics and Sets Problems

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ExpertsGlobal5

03 Feb 2026, 23:36

9

5

665

by: ExpertsGlobal5

07 Feb 2026, 19:30

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A game was played by each student from two sections of a class A and

Sub 505 (Easy) | Statistics and Sets Problems

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ExpertsGlobal5

03 Feb 2026, 00:22

3

5

546

by: ExpertsGlobal5

07 Feb 2026, 13:15

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Five boxes together weigh 100 pounds. What is the median weight of the

655-705 (Hard) | Statistics and Sets Problems

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

ExpertsGlobal5

03 Feb 2026, 00:20

9

8

764

by: ExpertsGlobal5

07 Feb 2026, 12:15

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Some Nitrogen was added into each of the 5 Nitrogen cylinders in a lab

605-655 (Medium) | Statistics and Sets Problems

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ExpertsGlobal5

01 Feb 2026, 23:40

6

2

527

by: ExpertsGlobal5

07 Feb 2026, 07:45

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The average weight of five people is 160 pounds. If no two people

655-705 (Hard) | Statistics and Sets Problems

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

ExpertsGlobal5

01 Feb 2026, 23:38

7

3

690

by: ExpertsGlobal5

07 Feb 2026, 06:45

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

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Bunuel

12 Nov 2024, 01:30

14

5

2,516

by: nikfield

06 Feb 2026, 05:59

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An exam was taken by a group of undergraduate students and graduate st

655-705 (Hard) | Statistics and Sets Problems

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

Sajjad1994

29 Aug 2019, 06:02

11

2

1,948

by: bumpbot

05 Feb 2026, 03:26

ER

In a certain country, the average retirement age for college graduates

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

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

Bunuel

18 May 2017, 00:12

21

10

7,660

by: bumpbot

02 Feb 2026, 16:44

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K is a set of numbers such that (i) if x is in K, then -x is in K, an

505-555 (Easy) | Statistics and Sets Problems

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Bunuel

30 Jan 2014, 23:48

159

16

31,452

by: bumpbot

02 Feb 2026, 01:56

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Devil's Dozen!!!

605-655 (Medium) | Algebra +9 tags

605-655 (Medium) | Algebra, Combinations, Distance and Speed Problems, Multiples and Factors, Number Properties, Overlapping Sets, Percent and Interest Problems, Remainders, Statistics and Sets Problems, Word Problems hide tags

1, 2, 3, 4

Bunuel

19 Mar 2012, 06:54

1.3k

78

174,855

by: bumpbot

01 Feb 2026, 23:35

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A game was played by each student in two sections of a class - A and B

555-605 (Medium) | Statistics and Sets Problems

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ExpertsGlobal5

29 Jan 2026, 22:00

2

373

by: ExpertsGlobal5

01 Feb 2026, 10:45

ER

Is the median monthly salary of 15 randomly selected employees of

655-705 (Hard) | Statistics and Sets Problems

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ExpertsGlobal5

27 Jan 2026, 22:00

8

3

574

by: ExpertsGlobal5

01 Feb 2026, 07:30

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A zoologist recorded the number of cubs under the care of each of 12 a

705-805 (Hard) | Statistics and Sets Problems

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

Bunuel

20 Jul 2020, 02:56

29

7

4,161

by: Rickooreoisb

29 Jan 2026, 19:59

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The marks scored by 50 students of a class are m1, m2, m3 …m50 where m

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

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

raj44

12 Dec 2014, 07:43

12

3

3,985

by: bumpbot

28 Jan 2026, 03:18

ER

The numbers of books read by 7 students last year were 10, 5

555-605 (Medium) | Statistics and Sets Problems

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gautamsubrahmanyam

11 Jun 2010, 07:44

72

12

21,008

by: bumpbot

27 Jan 2026, 06:14

ER

If S is a finite set of consecutive even numbers, is the

705-805 (Hard) | Statistics and Sets Problems

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

venmic

28 May 2012, 06:01

31

4

11,021

by: bumpbot

27 Jan 2026, 05:52

ER

Set A consists of all positive integers less than 100; Set B

555-605 (Medium) | Statistics and Sets Problems

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mohnish104

29 Nov 2013, 02:54

18

3

17,462

by: bumpbot

27 Jan 2026, 04:16

ER

At a business school conference with 100 attendees, are ther

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

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

enigma123

27 Dec 2024, 16:32

185

15

33,393

by: bumpbot

27 Jan 2026, 03:29

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Set A, Set B, and Set C each contain only positive integers.

805+ (Hard) | Statistics and Sets Problems

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mm007

20 Dec 2006, 19:38

81

16

20,304

by: bumpbot

26 Jan 2026, 22:40

ER

Over the course of a certain month, Olga, a saleswoman, sold 20 cars

705-805 (Hard) | Statistics and Sets Problems

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

ExpertsGlobal5

22 Jan 2026, 22:00

9

2

474

by: ExpertsGlobal5

25 Jan 2026, 10:15

ER

Each of the five divisions of a certain company sent representatives

805+ (Hard) | Statistics and Sets Problems

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gmatt1476

21 Sep 2019, 15:49

152

13

21,595

by: bumpbot

25 Jan 2026, 08:14

ER

What was the median of the number of parcels that a certain mailman

555-605 (Medium) | Statistics and Sets Problems

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

ExpertsGlobal5

19 Jan 2026, 22:00

2

332

by: ExpertsGlobal5

25 Jan 2026, 05:15

For a series S, what percentage of the sum is the average?

655-705 (Hard) | Statistics and Sets Problems

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

PyjamaScientist

03 Oct 2021, 02:26

4

2

1,645

by: bumpbot

23 Jan 2026, 13:56

ER

On a recent test, Kevin scored m percent higher than the class average

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

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Bunuel

23 Jan 2026, 07:45

1

320

by: shivani1351

23 Jan 2026, 11:10

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Steve spent a total of $36 on transportation for 3 days. What was his

605-655 (Medium) | Statistics and Sets Problems

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

alphonsa

09 Sep 2014, 23:05

13

3

3,440

by: bumpbot

23 Jan 2026, 02:27

ER

The average (arithmetic mean) salary in a firm increased by 20% after

655-705 (Hard) | Statistics and Sets Problems

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

Bunuel

06 Nov 2024, 01:31

5

2

1,295

by: bumpbot

23 Jan 2026, 00:07

ER

Seven integers, x1, x2, x3, x4, x5, x6, and x7, are picked at random f

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

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

Mspixel

04 Dec 2008, 13:31

139

15

35,663

by: bumpbot

21 Jan 2026, 07:01

ER

When tickets to a popular concert went on sale, a group of f

805+ (Hard) | Statistics and Sets Problems, Word Problems

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

nidhi12

04 Jun 2014, 05:27

18

4

4,388

by: bumpbot

21 Jan 2026, 02:06

ER

List P contains m numbers; list Q contains n numbers. If the two lists

705-805 (Hard) | Statistics and Sets Problems

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

Bunuel

16 Oct 2020, 00:15

48

7

11,141

by: bumpbot

19 Jan 2026, 09:24

Each of the 20 students has 9, or 10, or 11 books. What is the average

655-705 (Hard) | Statistics and Sets Problems

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

rohan2345

13 Apr 2019, 03:07

17

4

3,034

by: bumpbot

18 Jan 2026, 04:57

Joan and Carl played together as a team in the game of Smart Business

655-705 (Hard) | Statistics and Sets Problems

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

Kinshook

27 Oct 2019, 02:27

24

5

4,935

by: joydipb01

17 Jan 2026, 06:40

ER

During an experiment, Emily collected 11 different temperature reading

655-705 (Hard) | Statistics and Sets Problems

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

Bunuel

25 Feb 2020, 01:15

10

8

2,420

by: bumpbot

17 Jan 2026, 04:03

ER

What is the average (arithmetic mean) annual salary of the 6 employees

605-655 (Medium) | Statistics and Sets Problems

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

1, 2

Bunuel

03 Aug 2018, 11:13

209

20

51,641

by: bumpbot

16 Jan 2026, 10:18

ER

If the average (arithmetic mean) price of apples, bananas and oranges

605-655 (Medium) | Statistics and Sets Problems

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

Bunuel

25 Jan 2024, 02:30

3

6

2,071

by: ADisHere

14 Jan 2026, 13:02

ER

A set contains 24 even positive integers, not necessarily distinct. Do

605-655 (Medium) | Statistics and Sets Problems

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akanksha.setiya

28 Oct 2017, 09:28

17

10

6,176

by: bumpbot

14 Jan 2026, 00:58

ER

Material M costs $10 per kg, and material N costs $20 per kg. If 25 kg

655-705 (Hard) | Statistics and Sets Problems

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

ashikaverma13

28 Dec 2016, 10:49

29

4

13,780

by: bumpbot

13 Jan 2026, 20:33

ER

Is the standard deviation of Set A greater than or equal to the standa

505-555 (Easy) | Statistics and Sets Problems

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

Bunuel

11 Apr 2018, 21:23

8

9

4,128

by: bumpbot

13 Jan 2026, 13:02

ER

Hospital H conducted a survey of two groups of patients who were enrol

Sub 505 (Easy) | Statistics and Sets Problems

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Bunuel

14 Apr 2020, 01:47

25

13

15,666

by: bumpbot

13 Jan 2026, 12:54

Five friends received their scores on a quiz. What was the standard de

Sub 505 (Easy) | Statistics and Sets Problems

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Confide

16 Feb 2024, 19:11

4

2

2,047

by: bumpbot

13 Jan 2026, 12:43

ER

The annual rainfall in a city over the past 50 years is its historical

805+ (Hard) | Graphs and Illustrations, Statistics and Sets Problems

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guddo

30 May 2024, 13:35

78

9

10,606

by: bumpbot

13 Jan 2026, 08:08