GMAT Data Sufficiency (DS) Forum - Free Practice Questions

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Complete 1000 GMAT Data Sufficiency Series (DS-1000 Series) Questions

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Bunuel

25 Oct 2022, 08:11

190

15

89,511

by: thisisakr

16 Apr 2026, 11:46

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100 Hardest and easiest questions for DS as of June 2026

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1, 2

Bunuel

01 Jan 2026, 05:45

873

24

194,449

by: bumpbot

16 Sep 2025, 06:05

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DS Question Directory by Topic and Difficulty

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bb

23 Aug 2026, 13:03

1.6k

1

496,818

by: bb

23 Aug 2026, 13:01

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Data Sufficiency Butler: 2 Questions Every Day

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1, 2...5, 6

Bunuel

14 Sep 2026, 22:44

474

115

168,190

by: Bunuel

14 Sep 2026, 22:45

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A computer user wants to save 6 files, each of a different size, on a

655-705 (Hard) | Word Problems

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Swagatalaxmi

11 May 2024, 10:00

44

11

7,841

by: bumpbot

15 Sep 2026, 11:32

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A group of 7 students took a test. In the test, one student scored 100

655-705 (Hard) | Statistics and Sets Problems

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RJ7X0DefiningMyX

10 Jul 2019, 07:45

12

3

5,147

by: bumpbot

15 Sep 2026, 09:02

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Each person attending a fund-raising party for a certain club was

555-605 (Medium) | Word Problems

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udaymathapati

02 Nov 2022, 10:30

125

9

39,031

by: Sneha_0410

15 Sep 2026, 07:58

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Did Jennifer spend more than x dollars at her favorite sushi

605-655 (Medium) | Word Problems

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Bunuel

13 Feb 2025, 01:30

6

5

1,430

by: bumpbot

15 Sep 2026, 06:26

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A set consists of 10 positive integers. What is the standard deviation

555-605 (Medium) | Statistics and Sets Problems

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junii

17 Dec 2020, 05:26

17

4

6,862

by: bumpbot

15 Sep 2026, 05:23

Diana is traveling from Morristown to Lotusville in a car that

555-605 (Medium) | Word Problems

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Bunuel

14 Sep 2026, 19:00

1

2

56

by: dhart

15 Sep 2026, 02:48

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For each order, a mail order bookseller charges a fixed processing fee

655-705 (Hard) | Word Problems

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Bunuel

01 Jul 2020, 02:55

16

5

12,737

by: Rishab2409

15 Sep 2026, 01:14

On a certain construction crew there are 3 carpenters for every 2 pain

555-605 (Medium) | Word Problems

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Bunuel

12 Dec 2018, 04:54

6

4

3,993

by: bumpbot

15 Sep 2026, 00:11

Did Diane receive a larger bonus than Claire? (1) Diane's bonus was

555-605 (Medium) | Word Problems

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Bunuel

14 Sep 2026, 19:00

1

44

by: kb26

14 Sep 2026, 22:21

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The students in a certain college class took a midterm exam and

555-605 (Medium) | Percent and Interest Problems

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Bunuel

09 Feb 2024, 02:30

16

6

4,429

by: ohhno

14 Sep 2026, 11:22

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Price increased by M% from 1991 to 1992 and by N% from 1992

605-655 (Medium) | Percent and Interest Problems

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Bunuel

06 Aug 2025, 10:38

35

6

10,657

by: ohhno

14 Sep 2026, 11:20

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Last year, in Crossia, 25% of all babies were delivered in a private

655-705 (Hard) | Overlapping Sets

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ExpertsGlobal5

08 Jan 2026, 22:00

9

5

878

by: MarkGMATMentor

14 Sep 2026, 10:47

Joseph had to type an article containing 10,000 words. How many minute

555-605 (Medium) | Work and Rate Problems

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Bunuel

13 Sep 2026, 19:00

5

2

105

by: LucidGhost

14 Sep 2026, 09:19

The rules of a certain board game specify that for each turn, a player

655-705 (Hard) | Word Problems

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Bunuel

24 Jan 2026, 07:45

5

2

648

by: Rhopring

14 Sep 2026, 07:31

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In a certain lab, 60 percent of the researchers have advanced degrees

555-605 (Medium) | Overlapping Sets

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Bunuel

01 Sep 2026, 19:00

6

5

268

by: Taidaishar

14 Sep 2026, 03:04

A golf club that sold only individual and family memberships charged

555-605 (Medium) | Word Problems

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Bunuel

31 Aug 2026, 19:00

2

3

301

by: Taidaishar

14 Sep 2026, 02:45

The eight short stories published in a collection

655-705 (Hard) | Non-Math Related

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Vector09

12 Sep 2026, 22:11

1

128

by: stne

13 Sep 2026, 08:31

ER

On a camping trip, x campers each paid y dollars for food. What percen

655-705 (Hard) | Word Problems

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Bunuel

10 Jul 2020, 02:47

27

9

12,861

by: bumpbot

13 Sep 2026, 00:03

ER

If the price of a certain item increased by x% from 2002 to 2003

605-655 (Medium) | Percent and Interest Problems

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Bunuel

18 Jan 2010, 01:29

84

6

22,514

by: bumpbot

12 Sep 2026, 23:05

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12 Days of Christmas GMAT Competition - Day 4: A jar contains only red

655-705 (Hard) | Probability

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Bunuel

19 Dec 2024, 09:00

22

7

5,059

by: bumpbot

12 Sep 2026, 21:29

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A zoo has w wildebeests, y yaks, z zebras, and no other animals. If

655-705 (Hard) | Probability

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Bunuel

07 Jul 2015, 02:44

37

8

7,548

by: bumpbot

12 Sep 2026, 21:26

ER

Beth and Jim each received a salary increase. If Jim's salary was inc

505-555 (Easy) | Word Problems

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I3igDmsu

07 Jun 2009, 19:43

12

8

10,274

by: bumpbot

12 Sep 2026, 18:10

Lou recently painted his guest bedroom pale blue. the mixture of paint

505-555 (Easy) | Word Problems

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Nums99

01 Feb 2019, 21:18

7

6

4,822

by: bumpbot

12 Sep 2026, 18:05

ER

What is the number of members of Club X who are at least 35

505-555 (Easy) | Word Problems

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kilukilam

16 May 2014, 04:50

24

4

17,927

by: bumpbot

12 Sep 2026, 18:01

ER

Each of the 45 boxes on shelf J weighs less than each of the

505-555 (Easy) | Statistics and Sets Problems

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TOUGH GUY

07 Jun 2020, 02:28

85

10

43,451

by: bumpbot

12 Sep 2026, 17:42

ER

The sequence of four numbers a1, a2 , a3 and a4 is such that

505-555 (Easy) | Arithmetic, Sequences

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pritishmohan

18 May 2013, 01:25

70

10

19,692

by: bumpbot

12 Sep 2026, 17:33

ER

Set S consists of 20 different positive integers. How many

505-555 (Easy) | Statistics and Sets Problems

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axl169

10 Oct 2006, 09:04

23

9

15,394

by: bumpbot

12 Sep 2026, 17:21

If f(x) = Ax^2+Bx+C, is f(0)*f(5)>0?

705-805 (Hard) | Coordinate Plane, Functions and Custom Characters

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mau5

19 May 2013, 04:45

9

3

5,664

by: bumpbot

12 Sep 2026, 12:41

ER

How many people are directors of both Company K and Company

505-555 (Easy) | Overlapping Sets

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Bunuel

24 Sep 2012, 05:21

121

19

29,523

by: bumpbot

12 Sep 2026, 12:17

ER

A positive integer N is a six digit number of the form

655-705 (Hard) | Number Properties, Word Problems

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amanvermagmat

08 Aug 2018, 22:43

11

7

2,249

by: MarkGMATMentor

12 Sep 2026, 12:14

ER

S is a set of n consecutive positive integers. Is the mean of the set

655-705 (Hard) | Statistics and Sets Problems

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Bunuel

08 Oct 2021, 01:30

23

7

8,420

by: ohhno

12 Sep 2026, 11:23

ER

A number of individuals volunteer to walk dogs at a certain kennel thi

605-655 (Medium) | Word Problems

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Bunuel

02 Feb 2015, 07:23

17

8

6,983

by: bumpbot

12 Sep 2026, 09:29

ER

4 raffle winners were each given the opportunity to select one

605-655 (Medium) | Arithmetic, Word Problems

605-655 (Medium) | Arithmetic, Word Problems hide tags

EMPOWERgmatRichC

01 Nov 2015, 17:36

12

6

4,763

by: bumpbot

12 Sep 2026, 08:55

ER

A store sells two types of birdfeeder: Alphas and Bravos.

805+ (Hard) | Word Problems

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Maxswe

09 Dec 2012, 13:38

65

13

8,451

by: bumpbot

12 Sep 2026, 07:27

ER

P and Q are two positive numbers. Is P = Q ? (1) P is K% less than

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

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amanvermagmat

13 Aug 2018, 23:08

10

4

2,526

by: bumpbot

12 Sep 2026, 06:42

ER

Joes restaurant has exactly 3 items on its menu: Prawns Only

655-705 (Hard) | Word Problems

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BrentGMATPrepNow

22 May 2018, 07:05

4

1,943

by: bumpbot

12 Sep 2026, 06:31

A number of people are standing in rows for a group photograph in a un

705-805 (Hard) | Word Problems

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amanvermagmat

20 May 2018, 11:20

2

3

1,914

by: bumpbot

12 Sep 2026, 06:25

ER

Is a^4+b^4 less than 32?

705-805 (Hard) | Algebra +2 tags

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diota2004

08 Dec 2017, 21:42

61

7

4,431

by: bumpbot

12 Sep 2026, 06:19

Shane drives from his house to the beach by one of three possible rout

605-655 (Medium) | Word Problems

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Bunuel

09 Jan 2018, 23:42

10

3

3,212

by: bumpbot

12 Sep 2026, 03:08

There are only three kinds of books on a bookshelf, science book

505-555 (Easy) | Fractions and Ratios, Word Problems

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Bunuel

08 Sep 2026, 19:00

6

3

204

by: TheAdmissionHub

12 Sep 2026, 01:29

ER

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

505-555 (Easy) | Word Problems

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Bunuel

08 Jul 2018, 23:40

34

8

7,886

by: bumpbot

12 Sep 2026, 00:45

ER

Greta and Randy collected bottles to be recycled. How many bottles did

Sub 505 (Easy) | Algebra, Word Problems

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

Bunuel

21 Oct 2019, 06:33

2

3

4,023

by: Rishab2409

11 Sep 2026, 22:12

ER

A group of friends dined at a restaurant and paid a total of $132 for

805+ (Hard) | Percent and Interest Problems

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ShortcutoSpeed

13 Nov 2023, 15:33

125

9

16,958

by: bumpbot

11 Sep 2026, 13:06

ER

All the apartments in a certain building are either three-bedroom apar

655-705 (Hard) | Statistics and Sets Problems

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gmatophobia

24 Feb 2024, 14:47

103

8

16,178

by: bumpbot

11 Sep 2026, 11:00

ER

Beginning at noon yesterday, water was removed from a partially filled

805+ (Hard) | Word Problems

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raheelsn

19 Dec 2023, 05:51

147

14

18,226

by: bumpbot

11 Sep 2026, 10:52

ER

A certain catering company's cost to cater a dinner for n people is 5

655-705 (Hard) | Word Problems

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guddo

24 Jan 2024, 01:17

101

10

15,958

by: Bunuel

11 Sep 2026, 10:30

If a train traveled a route of 1,000 kilometers

605-655 (Medium) | Distance and Speed Problems

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bhargavhhhhhhhh

12 Apr 2025, 00:19

19

5

2,113

by: canopyinthecity

11 Sep 2026, 07:24

ER

A stock returned what percent of its cost in a dividend at the end of

555-605 (Medium) | Word Problems

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Bunuel

10 Sep 2026, 19:00

1

134

by: icandoit4u

11 Sep 2026, 01:27

ER

GMAT Club World Cup 2022 (DAY 5): The infinite decreasing sequence

805+ (Hard) | Sequences

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Bunuel

15 Jul 2022, 08:00

14

4

4,534

by: bumpbot

11 Sep 2026, 01:06