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

79,250

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

188,848

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

488,471

by: bb

29 Aug 2025, 13:27

ER

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

555-605 (Medium) | Statistics and Sets Problems

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

MathRevolution

15 Aug 2017, 01:30

8

4

3,183

by: egmat

19 Feb 2026, 06:33

ER

If the average (arithmetic mean) of 6 numbers is 75, how

605-655 (Medium) | Statistics and Sets Problems

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

rxs0005

13 Nov 2012, 08:13

18

12

7,287

by: bumpbot

03 Mar 2026, 04:50

ER

If the average (arithmetic mean) of 6 numbers is 30, what is the avera

505-555 (Easy) | Statistics and Sets Problems

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

Bunuel

01 Jan 2018, 01:34

1

1,848

by: DavidTutorexamPAL

01 Jan 2018, 02:39

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If the average (arithmetic mean) of 5 numbers is 30, what is the stand

555-605 (Medium) | Statistics and Sets Problems

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

MathRevolution

17 Oct 2017, 03:24

1

1,730

by: Bunuel

17 Oct 2017, 03:27

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If the average (arithmetic mean) of 5 integers is 6, what is the stand

605-655 (Medium) | Statistics and Sets Problems

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

BillyZ

21 Feb 2017, 19:53

1

1,516

by: Bunuel

21 Feb 2017, 20:53

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If the average (arithmetic mean) of 5 different numbers is 12, what is

605-655 (Medium) | Statistics and Sets Problems

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

Bunuel

12 Nov 2017, 23:49

12

4

11,108

by: bumpbot

24 Nov 2025, 12:41

ER

If the average (arithmetic mean) of 5 numbers is 60, how many of the

555-605 (Medium) | Statistics and Sets Problems

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

Bunuel

07 Jul 2021, 07:30

4

3

3,141

by: bumpbot

03 Jan 2025, 15:10

ER

If the average (arithmetic mean) of 4 numbers is 50, how man

555-605 (Medium) | Statistics and Sets Problems

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

Bunuel

20 Feb 2014, 01:11

54

7

27,378

by: bumpbot

28 Sep 2025, 16:11

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If the average (arithmetic mean) of 4 numbers is 30, how many of the

505-555 (Easy) | Word Problems

505-555 (Easy) | Word Problems hide tags

Bunuel

14 Jul 2021, 09:00

1

3

1,833

by: TestPrepUnlimited

19 Jul 2021, 10:48

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If the average (arithmetic mean) of 4 numbers is 30, how

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

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

enigma123

24 Feb 2012, 17:01

23

5

33,375

by: bumpbot

31 Aug 2023, 19:22

If the average (arithmetic mean) of 4 different numbers is 3

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

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

danzig

22 Oct 2012, 06:03

19

5

5,491

by: bumpbot

20 Oct 2024, 05:53

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If the average (arithmetic mean) of 3 integers x, y, z is 10, what is

555-605 (Medium) | Statistics and Sets Problems

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

Bunuel

27 Jun 2023, 08:00

2

1,617

by: arnimavarshney10

27 Jun 2023, 20:11

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If the average (arithmetic mean) of 3 integers a, b, and c is 5, what

555-605 (Medium) | Statistics and Sets Problems

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

Bunuel

11 Nov 2023, 03:11

1

942

by: VivekSri

12 Nov 2023, 01:15

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If the average (arithmetic mean) of 100 numbers is 50, what is the

555-605 (Medium) | Statistics and Sets Problems

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

Bunuel

20 Nov 2023, 02:27

2

1,984

by: bumpbot

09 Nov 2025, 18:40

ER

If the average (arithmetic mean) monthly sales of a department store

705-805 (Hard) | Statistics and Sets Problems

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

Bunuel

11 Nov 2019, 03:43

14

4

4,387

by: bumpbot

03 Oct 2023, 23:19

ER

If the average (arithmetic mean) life expectancy amongst males in coun

555-605 (Medium) | Statistics and Sets Problems

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

Bunuel

07 Jan 2018, 23:04

1

1,335

by: amanvermagmat

10 Jan 2018, 23:09

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If the average (arithmetic mean) height of Bob, John and Tom is 180 cm

555-605 (Medium) | Statistics and Sets Problems

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

MathRevolution

02 Aug 2018, 00:39

10

4

2,814

by: bumpbot

16 Apr 2025, 04:34

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

2,411

by: bumpbot

28 May 2025, 08:58

ER

If the average (arithmetic mean) energy per device needed to run 3

555-605 (Medium) | Word Problems

555-605 (Medium) | Word Problems hide tags

ExpertsGlobal5

25 Feb 2026, 20:00

3

2

374

by: ExpertsGlobal5

01 Mar 2026, 09:30

ER

If the average (arithmetic mean) cost per sweater for 3 pullover sweat

Sub 505 (Easy) | Word Problems

Sub 505 (Easy) | Word Problems hide tags

parkhydel

28 Apr 2020, 04:32

15

3

9,967

by: bumpbot

20 Dec 2025, 13:25

ER

If the average (arithmetic mean) annual income for a group of people

705-805 (Hard) | Percent and Interest Problems, Word Problems

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

Bunuel

25 Jan 2018, 23:54

13

5

4,337

by: bumpbot

13 Nov 2025, 04:19

If the arithmetic mean of three positive integers is 8, what are the

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Khawasbnam1

16 Dec 2018, 00:02

7

6

2,242

by: kylebecker9

07 Feb 2019, 12:42

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If the arithmetic mean of n consecutive odd integers is 20, what is

605-655 (Medium) | Statistics and Sets Problems

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

Bunuel

19 Aug 2015, 03:05

118

11

13,844

by: bumpbot

28 Jul 2025, 10:57

ER

If the arithmetic mean of five different numbers is 50, how many of th

655-705 (Hard) | Statistics and Sets Problems

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

Bunuel

31 Jan 2019, 01:26

7

4

2,929

by: bumpbot

10 Apr 2025, 06:03

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

1,956

by: bumpbot

21 Jun 2025, 15:52

ER

If the area of triangular region RST is 25, what is the perimeter

655-705 (Hard) | Geometry

655-705 (Hard) | Geometry hide tags

prasannar

01 Oct 2022, 09:30

100

16

27,996

by: bumpbot

28 Dec 2025, 08:34

ER

If the area of the right triangle shown is 24, what is the value of c?

555-605 (Medium) | Geometry

555-605 (Medium) | Geometry hide tags

Bunuel

13 Apr 2018, 01:37

1

1,214

by: Gladiator59

13 Apr 2018, 01:43

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If the area of the circle above with center O is 64π, what is the area

555-605 (Medium) | Geometry

555-605 (Medium) | Geometry hide tags

Bunuel

30 Apr 2019, 01:43

3

2,754

by: ScottTargetTestPrep

14 Nov 2022, 11:56

ER

If the area of a sector in a circle is x% of the total area of the cir

655-705 (Hard) | Geometry

655-705 (Hard) | Geometry hide tags

Bunuel

13 Sep 2018, 05:05

2

1,927

by: GMATWhizTeam

28 Feb 2020, 03:02

ER

If the area of a rectangle is 20, what is its perimeter?

555-605 (Medium) | Geometry

555-605 (Medium) | Geometry hide tags

Bunuel

13 Feb 2018, 01:16

2

5,234

by: amanvermagmat

13 Feb 2018, 02:53

ER

If the area of a parallelogram is 100, what is the perimeter

605-655 (Medium) | Geometry

605-655 (Medium) | Geometry hide tags

1, 2

I3igDmsu

29 Jun 2009, 19:20

109

25

35,069

by: bumpbot

26 Oct 2023, 09:34

ER

If the 3rd term of sequence A is 15, what is the 2nd term?

555-605 (Medium) | Sequences

555-605 (Medium) | Sequences hide tags

EMPOWERgmatRichC

04 Oct 2019, 16:40

9

7

3,799

by: bumpbot

05 Jul 2024, 23:10

ER

If the 2-digit positive integer n is 12 times the value of its tens

605-655 (Medium) | Number Properties

605-655 (Medium) | Number Properties hide tags

Bunuel

05 Feb 2024, 02:30

4

3

1,577

by: Arya_S

05 Feb 2024, 21:58

ER

If the 1st term of a sequence is 0 and the 2nd term is 1, is the 5th

505-555 (Easy) | Sequences

505-555 (Easy) | Sequences hide tags

Bunuel

26 Apr 2019, 01:59

54

16

22,572

by: bumpbot

27 Dec 2023, 02:49

ER

If tank X contains only gasoline, how many kiloliters of gasoline are

505-555 (Easy) | Word Problems

505-555 (Easy) | Word Problems hide tags

Bunuel

08 Jul 2018, 23:40

33

8

7,692

by: bumpbot

08 Sep 2024, 12:17

ER -1

If t1 hours are required to travel d miles at v1 miles per hour and t2

605-655 (Medium) | Distance and Speed Problems

605-655 (Medium) | Distance and Speed Problems hide tags

MathRevolution

08 May 2016, 05:27

26

7

5,490

by: rak08

04 Oct 2025, 04:48

ER

If t1 and t2 are the numbers of teachers and s1 and s2 are the numbers

555-605 (Medium) | Word Problems

555-605 (Medium) | Word Problems hide tags

Bunuel

17 Oct 2024, 01:30

4

3

852

by: Abdelaali91

17 Oct 2024, 14:53

ER

If t, p, and q are different positive integers, how many positive inte

805+ (Hard) | Multiples and Factors

805+ (Hard) | Multiples and Factors hide tags

Bunuel

04 Jul 2019, 08:00

36

6

6,552

by: bumpbot

19 Dec 2024, 07:07

ER

If t is the sum of three consecutive positive integers, is t a

655-705 (Hard) | Multiples and Factors

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

Bunuel

22 Dec 2015, 04:30

20

9

7,150

by: bumpbot

22 Apr 2025, 09:38

ER

If t is an integer, is t odd?

555-605 (Medium) | Number Properties

555-605 (Medium) | Number Properties hide tags

Hoozan

19 Dec 2020, 08:42

2

1,576

by: TestPrepUnlimited

22 Dec 2020, 21:58

ER

If t is an integer, is 3^t a factor of 21!? (1) t is the product of t

605-655 (Medium) | Exponents +2 tags

605-655 (Medium) | Exponents, Multiples and Factors, Number Properties hide tags

Bunuel

03 Jun 2021, 01:30

8

6

2,096

by: Bunuel

04 Jun 2021, 01:15

ER

If t is an integer, is 3^t a factor of 21!?

605-655 (Medium) | Exponents +2 tags

605-655 (Medium) | Exponents, Multiples and Factors, Number Properties hide tags

Bunuel

23 Feb 2021, 01:15

8

6

3,960

by: bumpbot

15 May 2022, 11:24

If T is an integer between 10 and 100, what is the value of T ? (1) Th

555-605 (Medium) | Algebra

555-605 (Medium) | Algebra hide tags

Carcass

27 Sep 2022, 00:58

3

2

1,820

by: bumpbot

05 Nov 2023, 05:09

ER

If T is a prime number, what is the remainder when T is divided by 3?

805+ (Hard) | Remainders

805+ (Hard) | Remainders hide tags

Bunuel

22 May 2020, 02:59

17

3

3,197

by: NoeticImbecile

01 Jun 2025, 11:26

ER

If t is a positive integer, is t^3 + 1 an odd number? (1) t is the sma

555-605 (Medium) | Exponents, Number Properties

555-605 (Medium) | Exponents, Number Properties hide tags

Bunuel

17 Nov 2020, 04:15

1

3

1,055

by: RutuM

17 Nov 2020, 11:38

ER

If t is a positive integer, is t a multiple of 3?

555-605 (Medium) | Multiples and Factors

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

Bunuel

28 Feb 2023, 02:30

1

2

1,391

by: SaquibHGMATWhiz

16 Mar 2023, 01:46

ER

If t is a positive integer, can t2 + 1 be completely divided by 10? (

805+ (Hard) | Multiples and Factors, Remainders

805+ (Hard) | Multiples and Factors, Remainders hide tags

siddharthkapoor

13 Oct 2019, 22:22

10

3

3,237

by: bumpbot

06 Sep 2024, 22:14

ER

If t is a positive integer, can (t+2)(t-3) be completely divided by 6?

805+ (Hard) | Multiples and Factors, Remainders

805+ (Hard) | Multiples and Factors, Remainders hide tags

siddharthkapoor

13 Oct 2019, 22:16

23

4

3,564

by: bumpbot

23 Aug 2023, 10:49

ER

If t is a positive integer and r is the remainder when t^2 + 5t + 6 is

705-805 (Hard) | Remainders

705-805 (Hard) | Remainders hide tags

1, 2

dpark

23 Feb 2012, 15:21

399

20

48,631

by: impatientdude

04 May 2026, 05:02

ER

If t is a positive integer and 3*10^t > 15,000, what is t?

605-655 (Medium) | Exponents, Inequalities

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

anooo31

06 May 2018, 01:58

8

6

3,052

by: bumpbot

16 Jun 2025, 09:03