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

189

15

89,161

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

872

24

194,298

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

496,331

by: bb

23 Aug 2026, 13:01

ER

All the terms of a certain sequence x_1,x_2, ..., x_n

705-805 (Hard) | Sequences

705-805 (Hard) | Sequences hide tags

Bunuel

30 Nov 2022, 09:45

8

3

2,987

by: bumpbot

18 Aug 2026, 05:11

ER

If k is a positive integer, is k the square of an integer?

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

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

tarek99

25 Dec 2021, 09:11

193

15

40,679

by: architkap

18 Aug 2026, 04:04

ER

The number of calories Dave burns, D, by running for x minutes at

705-805 (Hard) | Word Problems

705-805 (Hard) | Word Problems hide tags

Bunuel

21 Mar 2025, 00:30

19

5

2,248

by: egmat

17 Aug 2026, 11:00

ER

If X is a positive integer, is X a perfect square?

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

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

StringArgs

02 Jul 2022, 23:26

15

5

4,910

by: Bunuel

17 Aug 2026, 10:14

ER

12 Days of Christmas GMAT Competition - Day 4: The sequence of

805+ (Hard) | Sequences

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Bunuel

14 Dec 2023, 07:00

11

4

2,900

by: bumpbot

17 Aug 2026, 07:39

ER

Working together, Machine A and Machine B can produce a total of 200

505-555 (Easy) | Work and Rate Problems

505-555 (Easy) | Work and Rate Problems hide tags

Bunuel

16 Aug 2026, 19:00

4

367

by: counterclash1

17 Aug 2026, 07:12

The interest paid by Red State Reserve Bank is three times the interes

655-705 (Hard) | Percent and Interest Problems

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

Bunuel

10 Jun 2018, 04:47

4

2

2,528

by: bumpbot

17 Aug 2026, 06:35

ER

What was the average number of miles per gallon of gasoline consumed

605-655 (Medium) | Word Problems

605-655 (Medium) | Word Problems hide tags

Bunuel

11 Sep 2017, 00:31

3

8

3,317

by: bumpbot

17 Aug 2026, 06:17

ER

Of the 1400 college teachers surveyed, 42% said they considered engagi

705-805 (Hard) | Overlapping Sets

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1, 2

burnttwinky

30 Mar 2010, 22:58

262

37

54,112

by: KarishmaB

17 Aug 2026, 05:34

ER

Set A consists of 25 distinct numbers. We pick n numbers

605-655 (Medium) | Probability

605-655 (Medium) | Probability hide tags

1, 2

Bunuel

09 Jul 2013, 15:29

63

22

25,270

by: bumpbot

17 Aug 2026, 04:55

ER

Maria has $2.45 consisting of coins each worth either $0.05 or $0.25.

655-705 (Hard) | Word Problems

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Bunuel

13 Aug 2026, 19:00

5

3

509

by: TheAdmissionHub

17 Aug 2026, 02:17

ER

How much did credit-card fraud cost United States banks in year X to

Sub 505 (Easy) | Percent and Interest Problems

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Carcass

26 Jul 2017, 08:51

42

7

18,148

by: Rishab2409

16 Aug 2026, 23:12

ER

Steven and Stuart took a job in different companies at the same time.

655-705 (Hard) | Word Problems

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Bunuel

11 Aug 2026, 19:00

4

494

by: MrMaxMan

16 Aug 2026, 12:17

ER

What is the Standard Deviation of the set containing values A, B, C

655-705 (Hard) | Statistics and Sets Problems

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Bunuel

04 Jan 2021, 09:11

19

3

3,194

by: MrMaxMan

16 Aug 2026, 11:36

ER

If a merchant purchased a sofa from a manufacturer for $400 and then s

555-605 (Medium) | Word Problems

555-605 (Medium) | Word Problems hide tags

Bunuel

26 Apr 2019, 03:33

92

12

26,154

by: bumpbot

16 Aug 2026, 11:05

ER

At a bakery, all donuts are priced equally and all bagels

505-555 (Easy) | Word Problems

505-555 (Easy) | Word Problems hide tags

1, 2

Walkabout

06 Dec 2012, 04:17

100

23

44,525

by: RahuloBKL

16 Aug 2026, 09:48

ER

An appliance store acquired a refrigerator at a cost of x dollars and

555-605 (Medium) | Percent and Interest Problems

555-605 (Medium) | Percent and Interest Problems hide tags

Bunuel

03 Aug 2026, 19:00

2

4

499

by: RahuloBKL

16 Aug 2026, 09:45

Company M has exactly two product lines and no other sources of

655-705 (Hard) | Word Problems

655-705 (Hard) | Word Problems hide tags

Bunuel

07 Aug 2024, 08:45

2

3

1,255

by: bumpbot

16 Aug 2026, 09:22

ER

The original price of a computer was increased by x% to reach its

705-805 (Hard) | Word Problems

705-805 (Hard) | Word Problems hide tags

Bunuel

01 Aug 2023, 05:00

193

13

32,795

by: GulfTube

16 Aug 2026, 07:53

ER

GMAT Club Olympics 2025 (Day 6): An old photograph shows a group of

805+ (Hard) | Word Problems

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1, 2, 3, 4, 5

Bunuel

18 Aug 2026, 05:02

57

88

4,037

by: bumpbot

16 Aug 2026, 05:40

ER

The arithmetic mean of a collection of 5 positive integers, not necess

555-605 (Medium) | Statistics and Sets Problems

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

Carcass

26 Jul 2017, 11:52

80

12

26,390

by: bumpbot

15 Aug 2026, 15:00

ER

Was the average (arithmetic mean) sale price of a new home in region R

605-655 (Medium) | Statistics and Sets Problems

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

Carcass

09 Jun 2023, 11:33

74

13

12,688

by: bumpbot

15 Aug 2026, 15:00

ER

What is the ratio of the number of cups of flour to the number of cups

555-605 (Medium) | Fractions and Ratios, Word Problems

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tharunv

17 Oct 2019, 05:19

83

13

35,892

by: bumpbot

15 Aug 2026, 15:00

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

15 Aug 2026, 09:28

8

3

6,719

by: bumpbot

15 Aug 2026, 09:27

ER

Two cars start moving simultaneously in different directions from poin

805+ (Hard) | Distance and Speed Problems

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desaichinmay22

08 Dec 2014, 06:16

56

12

9,584

by: bumpbot

15 Aug 2026, 04:02

ER

Of the apartments in a certain building, 75 have a balcony, 80 have

Sub 505 (Easy) | Overlapping Sets

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Bunuel

09 Aug 2023, 10:00

27

4

14,765

by: bumpbot

15 Aug 2026, 02:17

ER

Of the shares of stock owned by a certain investor, 30

505-555 (Easy) | Algebra, Word Problems

505-555 (Easy) | Algebra, Word Problems hide tags

BabySmurf

25 Jan 2014, 02:16

191

7

55,935

by: MarkGMATMentor

14 Aug 2026, 11:49

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

805+ (Hard) | Statistics and Sets Problems

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Bunuel

24 Jan 2024, 02:30

8

3

2,888

by: bumpbot

14 Aug 2026, 08:35

A certain company has 500 employees split among three divisions, such

805+ (Hard) | Word Problems

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Bunuel

31 May 2024, 01:30

26

6

2,579

by: gullyboy09

14 Aug 2026, 05:25

ER

A merchant's markup for an item is the merchant's selling price for

705-805 (Hard) | Word Problems

705-805 (Hard) | Word Problems hide tags

gmatophobia

18 Feb 2024, 13:24

54

4

9,624

by: Rickooreo

14 Aug 2026, 03:24

ER

How many students aged between 21 and 23 scored between 70 and 90?

555-605 (Medium) | Overlapping Sets

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Bunuel

12 Aug 2026, 19:00

5

6

362

by: aeforx

14 Aug 2026, 01:54

Angela and Maria each earn a different regular monthly salary. Each of

505-555 (Easy) | Word Problems

505-555 (Easy) | Word Problems hide tags

Bunuel

13 Aug 2026, 19:00

1

284

by: dhart

13 Aug 2026, 23:52

ER

Bobby and his younger brother Johnny have the same birthday. Johnny's

805+ (Hard) | Word Problems

805+ (Hard) | Word Problems hide tags

Bunuel

03 Nov 2014, 09:31

118

7

13,232

by: bumpbot

13 Aug 2026, 23:01

ER

Last year in a group of 30 businesses, 21 reported a net profit and 15

555-605 (Medium) | Overlapping Sets

555-605 (Medium) | Overlapping Sets hide tags

TomB

05 Mar 2012, 17:27

239

12

47,451

by: Bunuel

13 Aug 2026, 22:34

ER

If every member of set X {-14, -12, 17, 28, 41, Z} is multiplied by nu

605-655 (Medium) | Percent and Interest Problems, Statistics and Sets Problems

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

vjsharma25

27 Mar 2011, 00:07

48

12

21,166

by: MrMaxMan

13 Aug 2026, 20:13

In a class of 200 students, 30 percent are enrolled in a finance

505-555 (Easy) | Overlapping Sets

505-555 (Easy) | Overlapping Sets hide tags

Bunuel

12 Aug 2026, 19:00

3

2

330

by: ThickRiver

13 Aug 2026, 15:36

If two printing machines work simultaneously at their respective

555-605 (Medium) | Work and Rate Problems

555-605 (Medium) | Work and Rate Problems hide tags

Bunuel

11 Aug 2026, 19:00

6

5

442

by: ThickRiver

13 Aug 2026, 14:14

ER

The sum of the terms of a geometric progression is 2047.

705-805 (Hard) | Sequences

705-805 (Hard) | Sequences hide tags

Gnpth

11 Aug 2017, 09:17

19

6

8,564

by: bumpbot

13 Aug 2026, 13:41

ER

A certain company that sells only cars and trucks reported that in 200

655-705 (Hard) | Percent and Interest Problems, Word Problems

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

honchos

04 Oct 2013, 11:08

6

7

6,203

by: egmat

13 Aug 2026, 12:55

ER

In the figure shown, the measure of angle PRS is how many degrees grea

655-705 (Hard) | Geometry

655-705 (Hard) | Geometry hide tags

Sylvan

27 Nov 2018, 01:55

424

19

97,547

by: Bunuel

13 Aug 2026, 10:26

ER

A certain experiment has three possible outcomes. The outcomes are mut

655-705 (Hard) | Probability

655-705 (Hard) | Probability hide tags

Bunuel

23 Jan 2026, 15:46

52

6

8,822

by: bumpbot

13 Aug 2026, 09:28

ER

S is a set of points in the plane. How many distinct triangles can be

Sub 505 (Easy) | Combinations, Coordinate Plane

Sub 505 (Easy) | Combinations, Coordinate Plane hide tags

1, 2

GGUY

15 Mar 2008, 00:41

387

23

67,496

by: bumpbot

13 Aug 2026, 07:55

ER

Sandra saves the same amount of money each month in an account for her

655-705 (Hard) | Word Problems

655-705 (Hard) | Word Problems hide tags

Bunuel

08 Jan 2021, 10:07

5

4

3,692

by: bumpbot

13 Aug 2026, 02:40

ER

Al and Barb shared the driving on a certain trip.

605-655 (Medium) | Distance and Speed Problems

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

jlgdr

20 Sep 2013, 16:21

81

10

19,916

by: Bunuel

13 Aug 2026, 02:36

ER

Raymonds father weighs twice as much as Raymond. How much does

555-605 (Medium) | Word Problems

555-605 (Medium) | Word Problems hide tags

Bunuel

28 May 2026, 11:25

18

5

867

by: HarishChaitanya

13 Aug 2026, 00:48

A certain business school wishes to offer admission to two of the cand

605-655 (Medium) | Combinations

605-655 (Medium) | Combinations hide tags

Redmaster2

19 Jun 2025, 11:00

12

2

1,447

by: bumpbot

12 Aug 2026, 23:44

ER

On a recent test taken by 21 students, each students test score was

555-605 (Medium) | Statistics and Sets Problems

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

houston1980

01 Jul 2023, 09:23

117

3

25,045

by: bumpbot

12 Aug 2026, 21:26

ER

If the sequence S has 150 terms, what is the 121st term of S ?

Sub 505 (Easy) | Sequences

Sub 505 (Easy) | Sequences hide tags

Bunuel

21 Jul 2021, 05:00

3

2

1,726

by: bumpbot

12 Aug 2026, 20:11

ER

At a university orientation, attendance was recorded for two optional

555-605 (Medium) | Overlapping Sets

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Bunuel

21 Jun 2026, 19:00

5

486

by: Bunuel

12 Aug 2026, 11:20

ER

Is the standard deviation of the numbers in list R less than the stand

705-805 (Hard) | Statistics and Sets Problems

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

parkhydel

28 Apr 2020, 04:52

326

16

26,033

by: bumpbot

12 Aug 2026, 06:06