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

78,859

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

188,607

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

488,054

by: bb

29 Aug 2025, 13:27

ER

How many more men than women are in the room?

Sub 505 (Easy) | Algebra, Word Problems

Sub 505 (Easy) | Algebra, Word Problems hide tags

Bunuel

16 May 2018, 06:47

11

9

11,064

by: bumpbot

17 Mar 2026, 11:15

ER

Is the standard deviation of set S greater than the standard deviation

605-655 (Medium) | Statistics and Sets Problems

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

Bunuel

17 Jun 2020, 01:45

17

9

8,993

by: bumpbot

17 Mar 2026, 13:22

ER

12 Days of Christmas GMAT Competition - Day 12: Set A consists of 50

805+ (Hard) | Statistics and Sets Problems

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

Bunuel

25 Dec 2020, 19:00

30

9

4,888

by: bumpbot

20 Mar 2026, 22:30

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The number 100 is what percent greater than x?

655-705 (Hard) | Percent and Interest Problems

655-705 (Hard) | Percent and Interest Problems hide tags

Bunuel

06 Nov 2019, 02:25

13

9

6,034

by: bumpbot

21 Mar 2026, 03:29

ER

Can regular exercise reduce the risk of chronic diseases?

Sub 505 (Easy) | Non-Math Related

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

guddo

14 Aug 2024, 09:38

10

9

4,096

by: JustKeepGoing

22 Mar 2026, 02:28

ER

In a certain group of people, the average (arithmetic mean) weight of

555-605 (Medium) | Word Problems

555-605 (Medium) | Word Problems hide tags

gmatt1476

21 Sep 2019, 17:17

40

9

16,543

by: bumpbot

22 Mar 2026, 06:48

ER

Store A and Store B in a residential complex supply eggs in cartons of

705-805 (Hard) | Word Problems

705-805 (Hard) | Word Problems hide tags

Tucky

26 Nov 2025, 08:30

32

9

2,407

by: MartyMurray

24 Mar 2026, 08:14

ER

Arty, Martha, Jenny, and Ralph all set sales goals for the month of Ju

705-805 (Hard) | Word Problems

705-805 (Hard) | Word Problems hide tags

Bunuel

07 Jul 2018, 09:43

17

9

4,951

by: bumpbot

26 Mar 2026, 02:40

ER

In the figure, what is the value of r? (1) c = 2 (2) c = d

505-555 (Easy) | Coordinate Plane

505-555 (Easy) | Coordinate Plane hide tags

Bunuel

01 Mar 2023, 04:28

17

9

4,385

by: MartyMurray

31 Mar 2026, 05:08

ER

In a retail store, the average (arithmetic mean) sale for month M was

605-655 (Medium) | Statistics and Sets Problems

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

Nevernevergiveup

06 Mar 2023, 00:11

103

9

18,307

by: bumpbot

05 Apr 2026, 04:21

ER

A certain pump working at a constant rate is used to remove rain water

655-705 (Hard) | Work and Rate Problems

655-705 (Hard) | Work and Rate Problems hide tags

GMATBusters

14 Mar 2020, 19:35

17

9

4,943

by: Advait01

05 Apr 2026, 07:05

ER

If a child is randomly selected from Columbus elementary sch

605-655 (Medium) | Probability

605-655 (Medium) | Probability hide tags

LinaNY

12 Oct 2013, 12:30

38

9

12,402

by: bumpbot

12 Apr 2026, 04:30

ER

Set X and set Y have 10 numbers each. Is standard deviation of set X

605-655 (Medium) | Statistics and Sets Problems

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

hkotadiya

05 Oct 2017, 07:40

33

9

14,082

by: bumpbot

13 Apr 2026, 12:03

ER

Set X consists of different positive numbers arranged in ascending ord

555-605 (Medium) | Number Properties, Word Problems

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

enigma123

17 Nov 2011, 16:41

57

9

26,237

by: bumpbot

16 Apr 2026, 11:27

ER

A factory has three types of machines – A, B, and C – each of which wo

655-705 (Hard) | Work and Rate Problems

655-705 (Hard) | Work and Rate Problems hide tags

Bunuel

21 Jul 2016, 04:42

97

9

14,031

by: NidhiYad

17 Apr 2026, 03:19

ER

At a certain banquet, meals were served in only 2 locations. In the

705-805 (Hard) | Overlapping Sets

705-805 (Hard) | Overlapping Sets hide tags

guddo

24 Jan 2024, 03:53

65

9

10,211

by: bumpbot

18 Apr 2026, 13:44

ER

Each entry in the multiplication table above is an integer that is eit

705-805 (Hard) | Arithmetic

705-805 (Hard) | Arithmetic hide tags

gmatt1476

21 Sep 2019, 19:09

202

9

20,607

by: Bunuel

19 Apr 2026, 06:47

ER

12 Days of Christmas GMAT Competition - Day 3: A manufacturer creates

655-705 (Hard) | Mixture Problems, Word Problems

655-705 (Hard) | Mixture Problems, Word Problems hide tags

Bunuel

18 Dec 2024, 09:00

17

9

4,862

by: bumpbot

20 Apr 2026, 05:28

ER

10 children have ordered a total of 17 hamburgers, and each child has

705-805 (Hard) | Word Problems

705-805 (Hard) | Word Problems hide tags

Bunuel

14 Jan 2021, 01:15

8

9

2,847

by: Tanpok

25 Apr 2026, 04:04

ER

Of the 40 researchers at a certain company, 60 percent work on project

555-605 (Medium) | Overlapping Sets

555-605 (Medium) | Overlapping Sets hide tags

guddo

24 Jan 2024, 02:39

29

9

8,316

by: Harsh_

26 Apr 2026, 11:11

ER

For what percent of those tested for a certain infection was the test

555-605 (Medium) | Overlapping Sets

555-605 (Medium) | Overlapping Sets hide tags

gmatbull

06 Jan 2013, 02:59

104

9

25,457

by: bumpbot

27 Apr 2026, 19:49

ER

If Vivica typed a document at an average rate that was greater than

605-655 (Medium) | Work and Rate Problems

605-655 (Medium) | Work and Rate Problems hide tags

happy1992

03 May 2016, 06:52

18

9

5,418

by: bumpbot

28 Apr 2026, 18:19

ER

During a two-session fundraising campaign, Maya and Noah each

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

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

Bunuel

13 Apr 2026, 19:00

1

9

397

by: Adit_

29 Apr 2026, 22:44

ER

X grams of water were added to the 80 grams of a strong

805+ (Hard) | Mixture Problems

805+ (Hard) | Mixture Problems hide tags

prasun84

18 Nov 2008, 11:16

266

9

32,614

by: Gun99

02 May 2026, 12:54

ER

Is x > sqrt(3)? (1) 3^(x) = sqrt(27) (2)x^3 + x^5 + x^7

Poor Quality

Poor Quality hide tags

spacelandprep

07 Mar 2011, 11:14

2

10

4,796

by: spacelandprep

08 Mar 2011, 16:25

What is the perimeter of the isosceles right triangle ABC

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Poor Quality hide tags

rxs0005

11 Jul 2013, 02:23

7

10

4,782

by: Sudhanshuacharya

16 Jul 2011, 11:42

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Three Children Alice, Brain & Chris have a total of

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Poor Quality hide tags

qweert

07 Aug 2010, 22:30

6

10

5,102

by: Bunuel

29 Mar 2012, 05:16

ER

Andy, George, and Sally are a team of consultants working on

705-805 (Hard) | Work and Rate Problems

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

R2I4D

17 May 2010, 17:17

39

10

13,200

by: IanStewart

25 Sep 2012, 00:33

ER

Is x an odd number? (1) n^x = 1 (2) n^2 is a prime number

655-705 (Hard) | Algebra +2 tags

655-705 (Hard) | Algebra, Exponents, Number Properties hide tags

MacFauz

28 Feb 2013, 07:23

8

10

4,409

by: manishuol

19 Apr 2013, 21:48

ER

Each member of a pack of 55 wolves has either brown or blue

805+ (Hard) | Overlapping Sets

805+ (Hard) | Overlapping Sets hide tags

GMATT73

25 Mar 2006, 22:17

46

10

15,896

by: Bunuel

31 Jan 2014, 08:11

ER

If r and s are positive integers, can the fraction r/s be expressed as

555-605 (Medium) | Number Properties

555-605 (Medium) | Number Properties hide tags

joemama142000

19 Sep 2014, 07:26

8

10

6,047

by: Bunuel

19 Sep 2014, 07:27

ER

When 200 laboratory rats were given an experimental medicine

555-605 (Medium) | Overlapping Sets

555-605 (Medium) | Overlapping Sets hide tags

rxs0005

12 Feb 2012, 10:33

2

10

3,520

by: shriramvelamuri

29 Jan 2015, 13:19

ER

If r and s are non-negative, what is the ratio of r to s?

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Poor Quality hide tags

anulfc

14 Jun 2015, 15:40

4

10

4,914

by: IanStewart

16 Jun 2015, 14:54

A set S contains five numbers k, k + 1, 2k - 1, 5k + 7 and 6k + 8. If

Poor Quality

Poor Quality hide tags

itzmyzone911

03 May 2015, 22:42

3

10

3,401

by: teplyam

18 Jun 2015, 23:57

ER

Car X leaves Town A at 2 p.m. and drives toward Town B at a constant

655-705 (Hard) | Distance and Speed Problems

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

pranit

05 Jul 2015, 12:08

9

10

6,176

by: Bunuel

05 Jul 2015, 12:10

It will rain today. Will it rain tomorrow?

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Poor Quality hide tags

UMB

15 Jul 2015, 08:00

2

10

45,650

by: georgesanjay

15 Jul 2015, 07:48

ER

A report consisting of 2,600 words is divided into 23

555-605 (Medium) | Word Problems

555-605 (Medium) | Word Problems hide tags

haas_mba07

06 Sep 2006, 20:45

7

10

11,284

by: Bunuel

30 Jul 2015, 07:22

ER

If n is a positive integer, and sqrt[(45)(14)(7^n)-(15)(7^(n-1))(54)]

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Poor Quality hide tags

wimpytots

02 Sep 2015, 19:30

17

10

4,849

by: ENGRTOMBA2018

04 Sep 2015, 04:55

ER

A sequence of terms a1, a2 ,a3, ..., a(m-1), am, is given by

605-655 (Medium) | Sequences

605-655 (Medium) | Sequences hide tags

guerrero25

15 Dec 2020, 23:48

40

10

9,414

by: bumpbot

10 Sep 2015, 01:22

ER

A worker’s account activities consist of three types of

655-705 (Hard) | Algebra, Word Problems

655-705 (Hard) | Algebra, Word Problems hide tags

gmatbull

01 Nov 2012, 09:15

5

10

3,970

by: MathRevolution

12 Oct 2015, 11:13

ER

Is - 3 < y < 5 ? (1) - 2 < y < 7 (2) - 4 < y < 6

505-555 (Easy) | Inequalities

505-555 (Easy) | Inequalities hide tags

Bunuel

01 Nov 2015, 09:13

3

10

2,236

by: MathRevolution

04 Nov 2015, 11:16

ER

Triangle T has vertices of (-2,6), (6,2) and (0,k) where k

705-805 (Hard) | Geometry

705-805 (Hard) | Geometry hide tags

alphabeta1234

12 Jul 2012, 17:29

14

10

6,053

by: prabhakar09

19 May 2016, 19:12

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Is K an integer? (1) K=P/Q, where P and Q are consequtive

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stolyar

15 May 2003, 05:09

1

10

5,052

by: bumpbot

28 Jul 2016, 19:45

ER

If A is a prime number, what is the value of A?

655-705 (Hard) | Multiples and Factors, Number Properties

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

Bunuel

18 Jul 2016, 08:16

3

10

2,662

by: stonecold

21 Aug 2016, 08:57

ER

A certain carton holds fewer than 50 books. What is the number of book

605-655 (Medium) | Number Properties, Remainders

605-655 (Medium) | Number Properties, Remainders hide tags

nilesh376

17 Apr 2010, 01:52

8

10

10,788

by: Bunuel

06 Oct 2016, 01:29

ER

The figure above represents a rectangular tile. The 8 hexago

605-655 (Medium) | Geometry

605-655 (Medium) | Geometry hide tags

summer101

11 Jun 2013, 06:19

7

10

5,320

by: BillyZ

15 Jan 2017, 01:31

ER

Is x+y equal to 3.6 ?

555-605 (Medium) | Inequalities

555-605 (Medium) | Inequalities hide tags

Asifpirlo

10 Aug 2013, 12:02

1

10

3,608

by: saswata4s

10 Mar 2017, 09:58

ER

On a particular trip, Jane drove x miles at 30 miles per hour and y

705-805 (Hard) | Distance and Speed Problems

705-805 (Hard) | Distance and Speed Problems hide tags

iamdp

10 Jun 2015, 07:11

132

10

17,202

by: Bunuel

17 Mar 2017, 02:20

ER

If x is a positive, single-digit integer, is x prime?

655-705 (Hard) | Number Properties

655-705 (Hard) | Number Properties hide tags

Bunuel

28 Aug 2015, 02:44

13

10

3,609

by: bumpbot

06 Jun 2017, 01:51

ER

Is y!/x! an integer?

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BukrsGmat

13 Jul 2012, 04:17

7

10

7,609

by: akshayk

13 Jun 2017, 22:34