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

78,586

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

188,439

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

487,795

by: bb

29 Aug 2025, 13:27

ER

If S is a set of integers and 5 is in S, is every multiple

655-705 (Hard) | Statistics and Sets Problems

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

tingjojo

17 May 2011, 06:59

18

10

6,338

by: bumpbot

22 Jun 2025, 19:43

ER

If the arithmetic mean of a set of n measurements was found to be

605-655 (Medium) | Statistics and Sets Problems

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

Bunuel

29 Sep 2023, 01:30

5

2

1,941

by: bumpbot

21 Jun 2025, 15:52

ER

Is the average of X consecutive integers odd?

705-805 (Hard) | Statistics and Sets Problems

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

Bunuel

20 Jul 2016, 11:43

13

5,628

by: bumpbot

21 Jun 2025, 15:26

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What is the ratio of the average (arithmetic mean) height of

555-605 (Medium) | Statistics and Sets Problems

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

LADodgers

05 Nov 2004, 18:38

434

17

66,877

by: ManifestDreamMBA

21 Jun 2025, 02:11

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If a, b, and c are positive integers, what is the range of the five nu

655-705 (Hard) | Statistics and Sets Problems

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

surupab

23 Jun 2020, 00:06

197

18

46,992

by: bumpbot

17 Jun 2025, 03:17

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In a class of 21, how many scored above the class average (arithmetic

605-655 (Medium) | Statistics and Sets Problems

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

Bunuel

02 Aug 2023, 10:00

140

11

29,443

by: jmaxr

16 Jun 2025, 12:11

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What was the average (arithmetic mean) monthly rainfall

505-555 (Easy) | Statistics and Sets Problems, Word Problems

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

Curly05

22 Jul 2003, 20:36

19

6

13,331

by: bumpbot

13 Jun 2025, 21:50

A group of six employees, including Lisa, participated in a weekly cod

655-705 (Hard) | Statistics and Sets Problems

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

siddhantvarma

11 Jun 2025, 09:52

4

1

741

by: stne

12 Jun 2025, 11:37

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The lifetime of all the batteries produced by a certain company in a

505-555 (Easy) | Statistics and Sets Problems

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

vigneshpandi

03 Jan 2019, 03:53

158

16

31,492

by: anushree01

11 Jun 2025, 18:33

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Does the standard deviation of B exceed that of A?

805+ (Hard) | Statistics and Sets Problems

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freewinzy

04 Sep 2013, 14:04

9

2

3,489

by: bumpbot

11 Jun 2025, 08:12

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What is the median number of employees assigned per project

555-605 (Medium) | Statistics and Sets Problems

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1, 2

ITIZCODE

04 May 2012, 02:26

876

28

98,000

by: RAZANMURADI

09 Jun 2025, 07:30

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Is the median of a, b, and c equal to their average (arithmetic mean)?

555-605 (Medium) | Statistics and Sets Problems

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

Bunuel

11 Jan 2024, 02:30

5

2

1,374

by: pintukr

05 Jun 2025, 11:04

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Set T is a finite set of positive consecutive multiples of 14. How

705-805 (Hard) | Multiples and Factors +2 tags

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

Bunuel

09 Oct 2015, 02:13

59

17

10,785

by: bumpbot

05 Jun 2025, 03:07

ER

If Q is a set of consecutive integers, what is the standard

605-655 (Medium) | Statistics and Sets Problems

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

ruturaj

02 Jul 2011, 13:43

43

13

9,173

by: bumpbot

03 Jun 2025, 02:16

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A, B, C, D, E are five distinct positive multiples of 10 suc

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

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

amanvermagmat

15 May 2018, 22:41

13

2

2,964

by: bumpbot

02 Jun 2025, 23:15

In a conference, the average (arithmetic mean) height of women is 160

555-605 (Medium) | Statistics and Sets Problems

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

Aabhash777

02 Jun 2025, 08:56

2

1

451

by: johannesc

02 Jun 2025, 19:39

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Set A consists of consecutive integers. What is the median of all the

655-705 (Hard) | Statistics and Sets Problems

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

souvonik2k

28 Oct 2017, 23:09

215

14

18,342

by: Bunuel

01 Jun 2025, 01:17

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GMAT CLUB OLYMPICS: If x and y are positive integers less than 10, wha

705-805 (Hard) | Probability, Statistics and Sets Problems

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

Bunuel

27 Aug 2021, 08:00

24

4

7,528

by: bumpbot

29 May 2025, 14:34

ER

If the average (arithmetic mean) exam score of Alice, Bob and Cindy is

555-605 (Medium) | Statistics and Sets Problems

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

MathRevolution

30 Oct 2017, 01:42

2

5

2,392

by: bumpbot

28 May 2025, 08:58

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The average (arithmetic mean) of 5 numbers is 10. If 3 of the 5 number

555-605 (Medium) | Statistics and Sets Problems

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

Bunuel

18 Apr 2023, 07:45

1

2

1,791

by: bumpbot

27 May 2025, 06:38

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If the median of the 5 numbers is 20, is the range of the 5 numbers

705-805 (Hard) | Statistics and Sets Problems

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

Bunuel

24 Jan 2024, 02:30

7

3

2,611

by: bumpbot

27 May 2025, 05:58

ER

Beginning in January of last year, Carl made deposits of $120 into his

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

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

mydreammba

01 Jun 2021, 03:33

1.1k

17

86,688

by: bumpbot

22 May 2025, 15:08

ER

Last year, the average price of eight different products sold by Compa

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

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

Bunuel

22 Oct 2019, 00:03

3

2,674

by: bumpbot

20 May 2025, 12:05

ER

Are the integers q, r and s consecutive?

555-605 (Medium) | Statistics and Sets Problems

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

bewakoof

08 Jul 2013, 07:21

35

9

12,286

by: bumpbot

20 May 2025, 10:03

ER

GMAT Club Olympics 2024 (Day 8): Emily visited five different

805+ (Hard) | Statistics and Sets Problems

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

Bunuel

17 Jul 2024, 07:00

52

19

7,447

by: Bunuel

20 May 2025, 08:06

ER

Is the median of the a + b quiz scores greater than the mean of the

705-805 (Hard) | Statistics and Sets Problems

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

DerekLin

14 Feb 2024, 01:16

108

12

17,233

by: GMATinsight

20 May 2025, 05:17

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A total of 20 amounts are entered on a spreadsheet that has

555-605 (Medium) | Statistics and Sets Problems

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

wizard

02 Mar 2012, 03:54

313

14

42,817

by: KarishmaB

18 May 2025, 22:14

ER

Lists S and T consist of the same number of positive integers. Is the

605-655 (Medium) | Statistics and Sets Problems

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

vaivish1723

22 May 2021, 13:27

111

19

23,299

by: Bunuel

17 May 2025, 11:40

ER

If x is to be selected at random from T, what is the probabi

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

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

1, 2

vksunder

18 Aug 2008, 12:17

146

22

29,207

by: Bunuel

17 May 2025, 10:26

In a certain class of n students, the average

705-805 (Hard) | Statistics and Sets Problems

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

gmatophobia

26 Sep 2023, 05:17

13

5

1,815

by: ahddhah

16 May 2025, 01:21

ER

If the mean of the set of 5 distinct positive integers (p,q,2,4,6) is

705-805 (Hard) | Statistics and Sets Problems

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

GMATBusters

09 May 2020, 18:59

5

10

4,743

by: bumpbot

15 May 2025, 14:55

ER

The sum of the integers in list S is the same as the sum of the intege

805+ (Hard) | Statistics and Sets Problems

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

1, 2, 3

Apex231

18 Feb 2012, 09:09

649

42

85,247

by: bumpbot

14 May 2025, 20:20

ER

Set S has 5 numbers such that its average (arithmetic mean) is greater

705-805 (Hard) | Statistics and Sets Problems

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

BillyZ

21 Feb 2017, 19:20

8

3

3,367

by: bumpbot

14 May 2025, 16:26

ER

If P is a set of integers and 3 is in P, is every positive

705-805 (Hard) | Multiples and Factors, Statistics and Sets Problems

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

1, 2

Caffmeister

02 Jul 2010, 10:24

134

21

24,552

by: bumpbot

14 May 2025, 15:41

ER

The average of set S comprising 5 non-zero integers is 0. What is its

705-805 (Hard) | Statistics and Sets Problems

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

TheUltimateWinner

22 Sep 2019, 12:17

7

9

2,980

by: bumpbot

14 May 2025, 15:21

ER

At a national robotics competition, the average score of participants

555-605 (Medium) | Statistics and Sets Problems

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

Bunuel

30 Apr 2025, 13:24

4

3

1,319

by: Bunuel

10 May 2025, 17:30

ER

Liam, Noah, and Olivia received their science project scores today.

555-605 (Medium) | Statistics and Sets Problems

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

Bunuel

29 Apr 2025, 04:16

5

8

1,557

by: Bunuel

10 May 2025, 03:15

ER

On a shipment, the weights (in kilograms) of a group of boxes

805+ (Hard) | Statistics and Sets Problems

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

Bunuel

15 Apr 2026, 11:25

19

5

2,250

by: Bunuel

09 May 2025, 01:30

ER

On a science exam, the scores received by a group of students

655-705 (Hard) | Statistics and Sets Problems

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

Bunuel

15 Apr 2026, 11:26

12

4

2,237

by: Bunuel

07 May 2025, 02:00

ER

What is range of the six positive integers: 1, p, 12, q, 15, r?

705-805 (Hard) | Statistics and Sets Problems

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

Bunuel

08 Jul 2019, 08:00

36

8

8,843

by: Bunuel

27 Apr 2025, 09:41

ER

If set Z has a median of 19 , what is the range of set Z?

555-605 (Medium) | Statistics and Sets Problems

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

rahularke

15 Sep 2009, 08:24

33

13

11,881

by: bumpbot

26 Apr 2025, 06:10

ER

2, 4, 5, 5, 9, m For the list of numbers above, what is the median?

555-605 (Medium) | Statistics and Sets Problems

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

Bunuel

10 Jun 2015, 04:09

30

7

8,474

by: bumpbot

26 Apr 2025, 05:59

ER

If P is a set of integers, is the average of P equal to the median of

805+ (Hard) | Statistics and Sets Problems

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

Aabhash777

29 Mar 2025, 23:47

5

3

1,144

by: francine8375

25 Apr 2025, 04:51

ER

If JNS Thermal Power Plant operates all 7 days a week

Sub 505 (Easy) | Statistics and Sets Problems

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

NextstopISB

23 Apr 2025, 10:07

2

749

by: HarshavardhanR

23 Apr 2025, 20:01

ER

Of the 48 students in a class, 16 like to study History. What percenta

805+ (Hard) | Statistics and Sets Problems

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mangamma

19 Apr 2019, 09:11

33

7

5,273

by: bumpbot

23 Apr 2025, 08:16

ER

Three distinct positive integers sum to 10. Is one of the three intege

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

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

abrutlag

05 Jul 2020, 10:47

3

4

3,617

by: bumpbot

23 Apr 2025, 07:19

ER

10 students took a chemistry exam that was graded on a scale

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

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

ace001

30 Jun 2010, 20:00

88

11

20,768

by: bumpbot

22 Apr 2025, 11:40

ER

A quality control worker at a warehouse inspects x separate boxes, eac

805+ (Hard) | Statistics and Sets Problems

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

Bunuel

02 Dec 2021, 02:30

17

7

3,569

by: bumpbot

21 Apr 2025, 00:21

ER

Set S contains five different positive integers a, b, c, d, and e, whe

805+ (Hard) | Statistics and Sets Problems

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

Raksat

07 Aug 2018, 10:32

18

11

3,563

by: bumpbot

20 Apr 2025, 21:51

ER

Let S be a finite set of consecutive multiples of 7.

805+ (Hard) | Statistics and Sets Problems

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

Mourinho2nd

28 Jun 2013, 22:03

113

8

13,000

by: bumpbot

20 Apr 2025, 01:25