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

181

15

82,735

by: thisisakr

16 Apr 2026, 11:46

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100 Hardest and easiest questions for DS as of May 2026

1, 2

Bunuel

01 Jan 2026, 05:45

861

24

190,973

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

490,907

by: bb

29 Aug 2025, 13:27

ER

When k, l, and m are different positive integers greater than 1, k+l+m

555-605 (Medium) | Algebra

555-605 (Medium) | Algebra hide tags

Bunuel

28 Jun 2023, 04:00

1

2

1,265

by: ChandlerBong

28 Jun 2023, 04:27

ER

When integer y is divided by 2, is the remainder 1 ?

505-555 (Easy) | Number Properties

505-555 (Easy) | Number Properties hide tags

Bunuel

23 Sep 2022, 05:11

1

1,476

by: stne

27 Sep 2022, 21:09

When integer A divide by 9 remainder is X, when integer B divided by 9

655-705 (Hard) | Remainders

655-705 (Hard) | Remainders hide tags

Harley1980

22 Apr 2015, 02:05

12

5

3,243

by: bumpbot

17 May 2019, 09:28

ER

When integer A divide by 79 remainder is X and when integer B divided

805+ (Hard) | Multiples and Factors, Remainders

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

1, 2

Harley1980

20 Apr 2015, 23:12

29

22

6,521

by: bumpbot

01 Mar 2019, 16:17

When integer A divide by 4 remainder is 1, when integer B divided by 4

655-705 (Hard) | Multiples and Factors, Remainders

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

Harley1980

19 Apr 2015, 08:11

7

4

3,138

by: ManjariMishra

17 May 2019, 10:04

ER

When f(x)=ax^2+bx+c (a≠0), is x+1 a factor of f(x)?

655-705 (Hard) | Functions and Custom Characters

655-705 (Hard) | Functions and Custom Characters hide tags

MathRevolution

26 Sep 2018, 05:03

26

9

4,419

by: bumpbot

02 Oct 2025, 05:17

ER

When defined, the expression (x^2-y^2)/(xy)-(xy-y^2)/(xy-x^2) is equal

655-705 (Hard) | Algebra

655-705 (Hard) | Algebra hide tags

fskilnik

03 Mar 2019, 14:28

1

2

1,454

by: fskilnik

03 Mar 2019, 16:28

ER

When cleaning her house, Carlotta discovered an old box of candles and

Sub 505 (Easy) | Combinations

Sub 505 (Easy) | Combinations hide tags

Bunuel

23 Mar 2020, 07:09

23

7

6,461

by: bumpbot

31 Dec 2025, 02:17

ER

When choosing two animals without replacement, what is the probability

655-705 (Hard) | Probability

655-705 (Hard) | Probability hide tags

Bunuel

25 Sep 2023, 01:30

4

2

2,337

by: bumpbot

03 Dec 2024, 01:28

When car X pulled into a service station, its gasoline

Sub 505 (Easy) | Word Problems

Sub 505 (Easy) | Word Problems hide tags

Carcass

31 Oct 2018, 10:55

2

3

4,535

by: bumpbot

08 Feb 2023, 05:13

ER

When booked, a vacation rental rents for x dollars per week for 16 wee

555-605 (Medium) | Word Problems

555-605 (Medium) | Word Problems hide tags

Bunuel

16 Feb 2023, 02:02

1

4

1,686

by: GMATinsight

25 Jun 2025, 23:24

ER

When assigning a score for the term, a professor takes the mean of all

555-605 (Medium) | Statistics and Sets Problems

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

Bunuel

31 Jan 2019, 01:12

2

1,695

by: cat2010

29 Nov 2022, 10:59

ER

When an object is dropped from a building, its height above the ground

505-555 (Easy) | Word Problems

505-555 (Easy) | Word Problems hide tags

Bunuel

23 Mar 2022, 06:30

1

2,205

by: JerryAtDreamScore

23 Mar 2022, 14:12

ER

When an international relief agency extended loans to 28

555-605 (Medium) | Overlapping Sets

555-605 (Medium) | Overlapping Sets hide tags

MilindJ

27 Oct 2012, 13:39

15

8

5,217

by: bumpbot

04 Feb 2020, 02:33

ER

When all the boxes in a warehouse were arranged in stacks of 8, there

655-705 (Hard) | Remainders, Word Problems

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

Bunuel

26 Sep 2025, 21:45

145

13

31,946

by: Bunuel

26 Sep 2025, 21:46

ER

When a rectangular label, 21.5cm long, is wrapped around the curved su

555-605 (Medium) | Geometry

555-605 (Medium) | Geometry hide tags

Bunuel

30 Oct 2019, 21:50

4

2

2,096

by: bumpbot

20 Nov 2021, 13:26

ER

When a random experiment is conducted, the probability that event A oc

655-705 (Hard) | Probability

655-705 (Hard) | Probability hide tags

Nums99

03 Aug 2019, 06:20

18

1

4,877

by: IanStewart

03 Aug 2019, 11:42

ER

When a positive integer x is divided by 12, what is the remainder?

605-655 (Medium) | Remainders

605-655 (Medium) | Remainders hide tags

MathRevolution

22 May 2017, 01:17

7

4

4,972

by: CEdward

28 Feb 2021, 01:43

ER

When a positive integer p is divided by 3, what is the remainder? 1) W

705-805 (Hard) | Number Properties

705-805 (Hard) | Number Properties hide tags

MathRevolution

20 Sep 2017, 00:48

5

4

6,870

by: bumpbot

31 May 2023, 13:10

ER

When a positive integer n is divided by 7, what is the remainder?

555-605 (Medium) | Arithmetic

555-605 (Medium) | Arithmetic hide tags

MathRevolution

28 Sep 2016, 04:00

30

5

15,714

by: bumpbot

12 Feb 2025, 07:50

ER

When a positive integer n is divided by 5, the remainder is 2. What is

555-605 (Medium) | Number Properties

555-605 (Medium) | Number Properties hide tags

MathRevolution

13 Apr 2018, 02:38

20

5

6,455

by: bumpbot

04 Dec 2023, 10:56

ER

When a positive integer n is divided by 4, what is the remainder?

655-705 (Hard) | Remainders

655-705 (Hard) | Remainders hide tags

Bunuel

19 Jun 2023, 04:00

3

1

1,234

by: $!vakumar.m

08 Jul 2023, 10:57

ER

When a positive integer n is divided by 3, what is the remainder?

505-555 (Easy) | Remainders

505-555 (Easy) | Remainders hide tags

MathRevolution

03 Aug 2018, 02:06

10

3

7,689

by: bumpbot

29 Apr 2024, 22:28

ER

When a positive integer n is divided by 3, what is the remainder?

555-605 (Medium) | Remainders

555-605 (Medium) | Remainders hide tags

Bunuel

05 Sep 2023, 05:00

3

1,490

by: mialanknox

09 Sep 2023, 23:27

ER

When a positive integer n is divided by 29, what is the remainder?

555-605 (Medium) | Remainders

555-605 (Medium) | Remainders hide tags

Bunuel

22 Jun 2023, 04:00

1

1,006

by: GMATinsight

22 Jun 2023, 07:14

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When a positive integer n is divided by 2, what is the remainder?

505-555 (Easy) | Number Properties

505-555 (Easy) | Number Properties hide tags

MathRevolution

30 Jan 2017, 02:46

1

2

1,862

by: MathRevolution

01 Feb 2017, 02:29

ER

When a positive integer n is divided by 13, what is the remainder?

555-605 (Medium) | Remainders

555-605 (Medium) | Remainders hide tags

Bunuel

22 Jan 2024, 02:30

2

1,842

by: Aryaa03

23 Jan 2024, 07:58

When a positive integer N is divided by 11, the remainder is 5.

705-805 (Hard) | Remainders

705-805 (Hard) | Remainders hide tags

ChandlerBong

18 Apr 2023, 00:52

2

4,586

by: bumpbot

26 May 2024, 12:13

ER

When a positive integer m is divided by 10, what is the remainder?

505-555 (Easy) | Remainders

505-555 (Easy) | Remainders hide tags

Bunuel

22 Jan 2024, 02:30

1

1,041

by: T4Star

22 Jan 2024, 10:43

ER

When a positive integer 'x' is divided by a divisor 'd', the remainder

805+ (Hard) | Multiples and Factors, Remainders

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

Bunuel

09 Mar 2016, 13:36

129

9

14,479

by: bumpbot

12 Sep 2025, 14:56

ER

When a player in a certain game tossed a coin a number of

505-555 (Easy) | Word Problems

505-555 (Easy) | Word Problems hide tags

Walkabout

14 Dec 2012, 08:28

33

4

17,375

by: totaltestprepNick

02 Mar 2026, 08:09

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When a player in a certain game removed a marble from a bag a certain

Poor Quality

Poor Quality hide tags

artisood17

10 Aug 2017, 11:28

1

2,178

by: mikemcgarry

11 Aug 2017, 17:25

ER

When a person went to travelling, she estimated the traveled distance

605-655 (Medium) | Distance and Speed Problems

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

MathRevolution

09 Sep 2016, 17:17

5

4

3,221

by: bumpbot

17 Aug 2022, 05:57

ER

When a die that has one of six consecutive integers on each

655-705 (Hard) | Probability

655-705 (Hard) | Probability hide tags

ruhi

29 Apr 2019, 07:25

52

16

10,297

by: bumpbot

28 Jan 2025, 16:57

ER

When a cookie is taken at random from a jar, what is the probability

605-655 (Medium) | Probability

605-655 (Medium) | Probability hide tags

Bunuel

24 Jan 2026, 03:45

5

4

792

by: ThatTallGuy

12 Mar 2026, 06:15

ER

When a club with x members conducts a membership drive using a certain

805+ (Hard) | Word Problems

805+ (Hard) | Word Problems hide tags

Bunuel

31 Aug 2015, 10:36

4

2,213

by: bumpbot

24 Jun 2025, 12:24

ER

When a class is divided into 6 teams with an equal number of

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Poor Quality hide tags

loveparis

09 Feb 2011, 16:40

1

4

5,379

by: anordinaryguy

17 Aug 2011, 10:00

ER

When a certain drug was administered to a group of patients, some pati

805+ (Hard) | Overlapping Sets

805+ (Hard) | Overlapping Sets hide tags

edwin.que

01 Nov 2023, 22:31

142

8

18,869

by: bumpbot

19 Apr 2026, 04:32

ER

When A and B are positive integers, is AB a multiple of 4?

655-705 (Hard) | Number Properties

655-705 (Hard) | Number Properties hide tags

MathRevolution

12 Oct 2018, 08:34

23

5

5,393

by: bumpbot

22 Apr 2024, 20:47

ER

When 900 is divided by positive integer d, the remainder is r.

705-805 (Hard) | Remainders

705-805 (Hard) | Remainders hide tags

Bunuel

09 Apr 2015, 07:31

91

9

11,573

by: bumpbot

31 Dec 2025, 23:59

ER

When 55 is divided by 3x the remainder is 2x. What is the value of x?

705-805 (Hard) | Number Properties, Remainders

705-805 (Hard) | Number Properties, Remainders hide tags

1, 2

Bunuel

23 Jan 2015, 07:36

54

23

10,799

by: bumpbot

07 Jan 2022, 12:26

ER

When 420 is divided by positive integers j and k, the remainders are x

805+ (Hard) | Multiples and Factors, Remainders

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

BrentGMATPrepNow

08 Jul 2019, 13:38

14

4

3,029

by: bumpbot

31 Jul 2024, 21:02

ER

When 3-digit integer 6a3 plus 3-digit integer 3b5 is divisible by 9, i

805+ (Hard) | Multiples and Factors

805+ (Hard) | Multiples and Factors hide tags

MathRevolution

07 Mar 2016, 16:59

23

7

4,979

by: bumpbot

05 Jan 2024, 14:41

ER

When 26 is divided by the positive integer k, the remainder is k - 2.

655-705 (Hard) | Remainders

655-705 (Hard) | Remainders hide tags

immarenbe

11 Feb 2022, 01:42

5

3

2,169

by: Archit3110

11 Feb 2022, 09:20

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

3,543

by: shriramvelamuri

29 Jan 2015, 13:19

ER

When 200 gallons of oil were removed from a tank, the volume of oil

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

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

milind1979

25 Mar 2009, 23:05

107

10

31,827

by: bumpbot

05 Apr 2026, 20:22

ER

When 2 numbers are removed from 1, 3, 5, 7, 9, 11, 13, 15, 17, and 19,

805+ (Hard) | Statistics and Sets Problems

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

Bunuel

04 Jan 2023, 02:30

11

6

3,958

by: KRNSW

27 Aug 2025, 11:14

ER

When 15n where n is a positive integer, is divided by 6, the remainder

555-605 (Medium) | Remainders

555-605 (Medium) | Remainders hide tags

Bunuel

12 Nov 2017, 23:40

1

4

4,282

by: bumpbot

25 Apr 2022, 00:43

ER

When 120 is divided by positive single-digit integer m the remainder

805+ (Hard) | Absolute Values, Multiples and Factors

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

Harley1980

30 Jun 2015, 10:51

127

10

18,852

by: bumpbot

25 Feb 2024, 10:10

ER

When 100 mice were injected with a certain chemical, some developed in

555-605 (Medium) | Overlapping Sets

555-605 (Medium) | Overlapping Sets hide tags

Bunuel

31 Jul 2023, 01:30

3

2

1,750

by: bumpbot

22 Mar 2025, 06:41