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

79,064

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

857

24

188,726

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

488,276

by: bb

29 Aug 2025, 13:27

ER

If the average (arithmetic mean) of a, b, and c is 28, is the average

555-605 (Medium) | Word Problems

555-605 (Medium) | Word Problems hide tags

Bunuel

31 Oct 2025, 00:53

2

1

577

by: samarpan.g28

02 Nov 2025, 14:26

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If the average (arithmetic mean) of a, b, c, and d is m, is their stan

655-705 (Hard) | Statistics and Sets Problems

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

MathRevolution

01 Jan 2018, 02:20

21

3

3,391

by: bumpbot

07 Apr 2026, 17:41

ER

If the average (arithmetic mean) of five positive numbers is 30, how

555-605 (Medium) | Word Problems

555-605 (Medium) | Word Problems hide tags

Bunuel

01 Jan 2018, 10:43

4

2,608

by: vipulshahi

30 May 2020, 06:50

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If the average (arithmetic mean) of five positive numbers is 30, how

505-555 (Easy) | Number Properties

505-555 (Easy) | Number Properties hide tags

Bunuel

28 Dec 2017, 00:28

1

1,938

by: DavidTutorexamPAL

28 Dec 2017, 04:26

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If the average (arithmetic mean) of four different numbers is 30, how

605-655 (Medium) | Statistics and Sets Problems

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

kook44

06 Jun 2019, 02:45

209

14

78,304

by: bumpbot

19 Aug 2025, 22:29

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If the average (arithmetic mean) of four different positive integers

655-705 (Hard) | Statistics and Sets Problems

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

Bunuel

06 Oct 2021, 01:30

6

4

6,301

by: bumpbot

23 Feb 2025, 04:57

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If the average (arithmetic mean) of four numbers is 10, how many of

705-805 (Hard) | Statistics and Sets Problems

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

AverageGuy123

27 Feb 2015, 21:22

22

6

15,134

by: bumpbot

06 May 2026, 00:44

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If the average (arithmetic mean) of four numbers is 150, how many of

555-605 (Medium) | Word Problems

555-605 (Medium) | Word Problems hide tags

Bunuel

16 Aug 2019, 03:02

3

2,029

by: Bunuel

18 Sep 2019, 01:11

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If the average (arithmetic mean) of four positive numbers is

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

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

rxs0005

01 Dec 2010, 04:24

33

7

9,284

by: bumpbot

18 Mar 2023, 07:39

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If the average (arithmetic mean) of four positive numbers is 40, how

605-655 (Medium) | Statistics and Sets Problems

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

Bunuel

03 Jan 2018, 21:13

4

2,459

by: bumpbot

05 Nov 2019, 07:12

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If the average (arithmetic mean) of four unequal numbers is 40, how ma

555-605 (Medium) | Statistics and Sets Problems

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

Bunuel

25 Oct 2018, 02:26

3

2,259

by: EgmatQuantExpert

25 Oct 2018, 06:27

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If the average (arithmetic mean) of n consecutive odd integers is 10,

655-705 (Hard) | Statistics and Sets Problems

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

1, 2

tonebeeze

09 Dec 2010, 15:43

497

20

74,886

by: totaltestprepNick

04 Mar 2026, 12:01

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If the average (arithmetic mean) of positive integers x and y is a pos

655-705 (Hard) | Multiples and Factors

655-705 (Hard) | Multiples and Factors hide tags

Bunuel

08 Jan 2018, 23:40

3

1,887

by: Bunuel

11 Feb 2018, 08:21

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If the average (arithmetic mean) of set A is 10,000 and the average (a

555-605 (Medium) | Statistics and Sets Problems

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

MathRevolution

08 Mar 2017, 01:13

2

3

2,350

by: MathRevolution

10 Mar 2017, 03:11

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If the average (arithmetic mean) of set A is 100 and the average

555-605 (Medium) | Statistics and Sets Problems

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

Bunuel

21 Jun 2023, 04:00

1

1,203

by: gmatophobia

21 Jun 2023, 14:34

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If the average (arithmetic mean) of seven unequal numbers is 20, what

555-605 (Medium) | Statistics and Sets Problems

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

Bunuel

25 Oct 2018, 02:25

11

13

3,297

by: DavidTutorexamPAL

26 Oct 2018, 05:23

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If the average (arithmetic mean) of six different numbers is 25, how m

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

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

Bunuel

12 Nov 2014, 09:48

19

5

11,921

by: bumpbot

22 Sep 2022, 13:27

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If the average (arithmetic mean) of six numbers is 75, how

Sub 505 (Easy) | Statistics and Sets Problems

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

GMATD11

21 Feb 2011, 09:40

212

10

53,446

by: totaltestprepNick

04 Mar 2026, 10:53

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If the average (arithmetic mean) of six numbers j, k, m, n, p, and q

555-605 (Medium) | Arithmetic

555-605 (Medium) | Arithmetic hide tags

sananoor

28 Jul 2017, 04:01

9

5

6,641

by: bumpbot

22 Nov 2022, 07:08

ER

If the average (arithmetic mean) of the assessed values of x houses is

555-605 (Medium) | Word Problems

555-605 (Medium) | Word Problems hide tags

sondenso

20 Nov 2023, 09:37

80

11

27,031

by: GMAT1034

22 Jul 2025, 09:13

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If the average (arithmetic mean) of the five numbers x, 7, 2, 16 and

555-605 (Medium) | Statistics and Sets Problems

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

1, 2

satishreddy

19 Oct 2010, 00:58

172

21

67,739

by: bumpbot

20 Mar 2026, 01:48

ER

If the average (arithmetic mean) of the scores of x students of class

555-605 (Medium) | Statistics and Sets Problems

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

Bunuel

25 Oct 2018, 02:26

3

2

2,577

by: EgmatQuantExpert

25 Oct 2018, 06:25

If the average (arithmetic mean) of the three different positive integ

705-805 (Hard) | Statistics and Sets Problems

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

T1101

11 Oct 2018, 03:13

8

5

3,969

by: bumpbot

12 Jul 2024, 15:13

ER

If the average (arithmetic mean) of three integers is 76, what is the

505-555 (Easy) | Statistics and Sets Problems

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

Bunuel

04 Jan 2018, 23:58

1

2

1,888

by: BrushMyQuant

07 Oct 2022, 09:24

ER

If the average (arithmetic mean) of three positive integers is 35, how

555-605 (Medium) | Algebra

555-605 (Medium) | Algebra hide tags

Bunuel

20 Apr 2022, 09:00

4

3

2,026

by: WizakoBaskar

24 Apr 2022, 22:42

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If the average (arithmetic mean) of three positive numbers is 30, how

555-605 (Medium) | Word Problems

555-605 (Medium) | Word Problems hide tags

Bunuel

01 Jan 2018, 10:44

5

2

2,292

by: GmatPrime

06 Jun 2019, 13:45

ER

If the average (arithmetic mean) of w, p, q, and t is m, is the standa

655-705 (Hard) | Statistics and Sets Problems

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

siddharthkapoor

01 Oct 2020, 20:43

11

4

2,830

by: bumpbot

02 Oct 2025, 08:27

ER

If the average (arithmetic mean) of x and y is positive, is x > 0?

555-605 (Medium) | Inequalities

555-605 (Medium) | Inequalities hide tags

Bunuel

08 Jan 2018, 01:08

1

1,359

by: Sasindran

08 Jan 2018, 01:24

ER

If the average (arithmetic mean) of x and y is positive, is x positive

605-655 (Medium) | Inequalities

605-655 (Medium) | Inequalities hide tags

Bunuel

30 Oct 2019, 21:56

3

4,194

by: GMATBusters

05 Sep 2024, 04:02

ER

If the average (arithmetic mean) of x and y is positive, is x positive

605-655 (Medium) | Inequalities

605-655 (Medium) | Inequalities hide tags

Bunuel

10 Jan 2018, 05:36

4

3

1,657

by: PraveenChahal

10 Jan 2018, 09:24

ER

If the average (arithmetic mean) of x and y is positive, is x positive

555-605 (Medium) | Inequalities

555-605 (Medium) | Inequalities hide tags

Bunuel

05 Jan 2018, 01:11

1

1,065

by: GMATBusters

05 Jan 2018, 08:38

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

2,087

by: ADisHere

14 Jan 2026, 13:02

ER

If the average height of three people with different heights is 68 inc

655-705 (Hard) | Word Problems

655-705 (Hard) | Word Problems hide tags

Bunuel

06 Feb 2018, 05:40

5

4

6,063

by: bumpbot

31 Mar 2022, 03:31

If the average of 5 numbers is 75, what is the range of the numbers? 1

555-605 (Medium) | Statistics and Sets Problems

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

TheUltimateWinner

17 Aug 2019, 23:14

1

1,689

by: LeoN88

17 Aug 2019, 23:34

ER

If the average of 7 numbers is 72, how many of the numbers

555-605 (Medium) | Statistics and Sets Problems

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

BN1989

20 Mar 2012, 13:43

8

6

4,352

by: bumpbot

25 Sep 2019, 05:17

ER

If the average of a and 15 is b, is b > a? (1) 14 < b < 15 (2) a + b

605-655 (Medium) | Inequalities

605-655 (Medium) | Inequalities hide tags

Bunuel

07 Jan 2018, 23:15

1

1,404

by: amanvermagmat

08 Jan 2018, 11:29

ER

If the average of five numbers, x, 6, 3, 15 and 12 is equal to the

555-605 (Medium) | Statistics and Sets Problems

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

Bunuel

27 Jan 2023, 10:15

1

1,132

by: gmatophobia

28 Jan 2023, 22:58

ER

If the average of four distinct positive integers is 60, how many inte

805+ (Hard) | Statistics and Sets Problems

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

Bunuel

06 Feb 2019, 05:45

25

11

12,952

by: bumpbot

23 Sep 2025, 16:45

ER

If the average of four numbers is 35, how many of the numbers are less

555-605 (Medium) | Word Problems

555-605 (Medium) | Word Problems hide tags

Bunuel

28 Feb 2016, 11:47

6

4

5,007

by: Basshead

05 Dec 2020, 17:23

ER

If the average of three numbers of 2, 5, and x equal to the median, wh

655-705 (Hard) | Statistics and Sets Problems

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

Recon

04 Oct 2020, 05:11

9

3

1,750

by: bumpbot

08 Oct 2024, 08:40

ER

If the average size of 3 accounts is $1 million, is the smallest

555-605 (Medium) | Word Problems

555-605 (Medium) | Word Problems hide tags

Bunuel

16 Jan 2026, 09:15

1

248

by: shashi1277

16 Jan 2026, 10:48

ER

If the average weight of the chickens on Farm One is 12

Sub 505 (Easy) | Statistics and Sets Problems

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

Gnpth

15 Jul 2014, 23:58

10

8

6,679

by: bumpbot

19 Jan 2023, 03:35

ER

If the base of triangle PQR is 5, what is the perimeter of the triangl

705-805 (Hard) | Geometry

705-805 (Hard) | Geometry hide tags

Bunuel

18 Sep 2018, 22:03

7

4

2,084

by: bumpbot

12 Jul 2023, 08:45

ER

If the base of triangle PQR is 5, what is the perimeter of the triangl

805+ (Hard) | Geometry

805+ (Hard) | Geometry hide tags

Bunuel

13 Nov 2019, 01:46

18

7

4,643

by: bumpbot

05 Jul 2023, 20:55

ER

If the base score is between 10 and 99, the bonus is equal

805+ (Hard) | Arithmetic, Word Problems

805+ (Hard) | Arithmetic, Word Problems hide tags

shekar123

02 Jun 2010, 22:05

144

7

20,287

by: Stella5200

02 Jan 2026, 07:07

ER

If the book value of a certain piece of equipment was $5,000 exactly

655-705 (Hard) | Word Problems

655-705 (Hard) | Word Problems hide tags

Bunuel

23 May 2020, 08:39

85

12

16,263

by: bumpbot

18 Mar 2026, 05:49

ER

If the capacity of tank X is less than the capacity of tank Y and both

555-605 (Medium) | Word Problems

555-605 (Medium) | Word Problems hide tags

Bunuel

23 May 2020, 06:31

18

11

10,189

by: bumpbot

21 Apr 2025, 00:58

If the Celsius temperature of Object X is C and the equivalent Fahrenh

655-705 (Hard) | Word Problems

655-705 (Hard) | Word Problems hide tags

guddo

25 Jan 2024, 00:04

36

4

8,613

by: bumpbot

14 Jun 2025, 06:21

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

11,019

by: CrackverbalGMAT

05 Jun 2019, 19:35

ER

If the circle passes through the origin and has a perimeter of kπ, wha

555-605 (Medium) | Geometry

555-605 (Medium) | Geometry hide tags

Bunuel

30 Aug 2018, 04:54

2

1,477

by: PKN

30 Aug 2018, 08:43