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

78,613

by: thisisakr

16 Apr 2026, 11:46

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100 Hardest and easiest questions for DS as of March 2026

1, 2

Bunuel

01 Jan 2026, 05:45

854

24

188,457

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

487,829

by: bb

29 Aug 2025, 13:27

ER

A pet store sells three types of animals: cats, dogs and exotic fish.

605-655 (Medium) | Fractions and Ratios, Word Problems

605-655 (Medium) | Fractions and Ratios, Word Problems hide tags

EMPOWERgmatRichC

27 Oct 2024, 10:38

17

9

5,422

by: bumpbot

22 Sep 2025, 09:00

ER

If z is the sum of three consecutive odd positive integers, is z evenl

705-805 (Hard) | Multiples and Factors, Remainders

705-805 (Hard) | Multiples and Factors, Remainders hide tags

Bunuel

23 Mar 2020, 06:57

18

3

3,340

by: bumpbot

22 Sep 2025, 08:39

ER

If p and q are positive integers, is 21^p/630^q a terminating

705-805 (Hard) | Fractions and Ratios

705-805 (Hard) | Fractions and Ratios hide tags

pushpitkc

01 Jan 2018, 00:02

27

5

5,746

by: bumpbot

22 Sep 2025, 08:32

ER

If n is a positive integer greater than 6, what is the remai

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

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

russ9

19 May 2014, 03:25

82

11

16,282

by: bumpbot

22 Sep 2025, 08:26

ER

If the integer n is greater than 1, is n equal to 2?

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

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

1, 2

dimitri92

10 Apr 2012, 10:44

423

24

63,265

by: bumpbot

22 Sep 2025, 08:07

ER

If x 1 and x is a common factor of integer y and odd integer z, is x

805+ (Hard) | Multiples and Factors, Number Properties

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

devashish2407

26 Mar 2024, 09:07

10

7

1,567

by: Bunuel

22 Sep 2025, 06:12

ER

Todd recently competed in a dance contest. The contest had exactly 4 j

605-655 (Medium) | Word Problems

605-655 (Medium) | Word Problems hide tags

DALC1

14 Jan 2024, 01:07

22

6

6,897

by: Bunuel

22 Sep 2025, 05:17

ER

What is the value of |x| ?

555-605 (Medium) | Absolute Values

555-605 (Medium) | Absolute Values hide tags

sandal85

25 May 2012, 00:51

71

10

16,373

by: bumpbot

21 Sep 2025, 23:36

ER

Two teams, X and Y played against each other in a tournament

605-655 (Medium) | Word Problems

605-655 (Medium) | Word Problems hide tags

eybrj2

18 Feb 2012, 01:54

32

5

11,329

by: bumpbot

21 Sep 2025, 15:52

ER

Yesterday Diana spent a total of 240 minutes attending a

555-605 (Medium) | Word Problems

555-605 (Medium) | Word Problems hide tags

mehdiov

07 Sep 2010, 15:37

35

7

13,243

by: bumpbot

21 Sep 2025, 15:43

ER

In the figure above, if the shaded region is rectangular, what is the

655-705 (Hard) | Geometry

655-705 (Hard) | Geometry hide tags

gmatt1476

21 Sep 2019, 18:47

123

7

17,926

by: bumpbot

21 Sep 2025, 15:23

ER

A bank account earned 2% annual interest, compounded daily, for as lon

655-705 (Hard) | Percent and Interest Problems

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

gmatt1476

21 Sep 2019, 19:02

314

13

25,509

by: Bunuel

21 Sep 2025, 13:38

ER

An animal shelter began the day Tuesday with a ratio of 5 cats for eve

605-655 (Medium) | Fractions and Ratios, Word Problems

605-655 (Medium) | Fractions and Ratios, Word Problems hide tags

Bunuel

23 Jan 2015, 07:41

30

6

9,360

by: bumpbot

21 Sep 2025, 12:41

ER

If Jamal drove 240 kilometers, what was his average speed for the 240

555-605 (Medium) | Distance and Speed Problems

555-605 (Medium) | Distance and Speed Problems hide tags

Bunuel

05 Aug 2023, 05:00

220

10

37,893

by: Bunuel

21 Sep 2025, 11:37

ER

What is the median of m, n and 5?

555-605 (Medium) | Statistics and Sets Problems

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

Bunuel

23 Jun 2023, 04:00

2

1,172

by: bumpbot

21 Sep 2025, 07:19

ER

What is the value of y ? (1) |x| ≤ y ≤ −|x| (2) |y| ≥ x ≥ −|y|

655-705 (Hard) | Absolute Values, Inequalities

655-705 (Hard) | Absolute Values, Inequalities hide tags

Bunuel

24 Jun 2020, 02:27

22

8

2,989

by: bumpbot

21 Sep 2025, 05:06

ER

Is x>0? 1) x^2=9x 2) x^2=81

555-605 (Medium) | Algebra

555-605 (Medium) | Algebra hide tags

Abrax99

02 Feb 2016, 16:45

32

10

12,900

by: bumpbot

21 Sep 2025, 01:57

ER

Percy, Quincy, and Randy ate 15 slices of pizza combined. How many sli

505-555 (Easy) | Word Problems

505-555 (Easy) | Word Problems hide tags

Bunuel

15 Sep 2021, 03:30

6

4

3,740

by: bumpbot

21 Sep 2025, 01:42

ER

If x and y are both positive integers, x is a multiple of 3 and y is a

505-555 (Easy) | Multiples and Factors

505-555 (Easy) | Multiples and Factors hide tags

zahraf

15 Sep 2015, 18:57

31

10

15,354

by: bumpbot

21 Sep 2025, 01:39

ER -1

If n is positive, is root(n) > 100 ?

555-605 (Medium) | Algebra +2 tags

555-605 (Medium) | Algebra, Inequalities, Roots hide tags

Bunuel

11 Jan 2011, 17:57

346

18

43,387

by: bumpbot

20 Sep 2025, 23:00

-1

For Company A, by what percent did profit increase this year over last

605-655 (Medium) | Percent and Interest Problems

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

achloes

20 Jun 2023, 03:47

6

2

2,378

by: Mehta17

20 Sep 2025, 21:37

ER

What is an example of how investment in healthcare resources might

605-655 (Medium) | Non-Math Related

605-655 (Medium) | Non-Math Related hide tags

guddo

14 Aug 2024, 02:55

39

8

6,521

by: MegB07

20 Sep 2025, 21:08

ER

At a college party, 70% of the women are wearing red t-shirts. If 60%

655-705 (Hard) | Overlapping Sets

655-705 (Hard) | Overlapping Sets hide tags

Bunuel

18 Jul 2018, 23:42

6

7

2,536

by: PriyanshuR

20 Sep 2025, 09:31

ER

If the units’ digit of a three-digit positive number N is between 1 to

605-655 (Medium) | Arithmetic

605-655 (Medium) | Arithmetic hide tags

Bunuel

27 Sep 2018, 05:52

10

3

3,183

by: bumpbot

20 Sep 2025, 09:01

ER

Mary persuaded n friends to donate $500 each to her election

655-705 (Hard) | Word Problems

655-705 (Hard) | Word Problems hide tags

1, 2

seofah

07 Apr 2009, 15:51

324

20

55,438

by: bumpbot

20 Sep 2025, 08:10

ER

Is root{x} a prime number?

655-705 (Hard) | Absolute Values, Number Properties

655-705 (Hard) | Absolute Values, Number Properties hide tags

LM

26 Jan 2012, 07:29

60

10

22,935

by: Bunuel

20 Sep 2025, 07:21

ER

Is the non-negative number r prime?

705-805 (Hard) | Number Properties

705-805 (Hard) | Number Properties hide tags

blowice27

17 Sep 2019, 01:36

5

6

3,629

by: bumpbot

20 Sep 2025, 07:01

ER

In a certain infinite sequence n, n_{1} = 7, n_{2} = 70, n_{3} = 700 .

605-655 (Medium) | Sequences

605-655 (Medium) | Sequences hide tags

Hoozan

24 Mar 2022, 11:38

17

6

5,630

by: bumpbot

20 Sep 2025, 06:53

ER

Did John go to the beach yesterday? (1) If John goes to the beach, he

605-655 (Medium) | Word Problems

605-655 (Medium) | Word Problems hide tags

Bunuel

16 Oct 2017, 01:44

6

7

4,697

by: bumpbot

20 Sep 2025, 04:48

ER

A bag contains blueberry candies, each weighing 9 grams, and mango can

655-705 (Hard) | Word Problems

655-705 (Hard) | Word Problems hide tags

Bunuel

01 Jul 2018, 21:18

7

3

2,286

by: bumpbot

20 Sep 2025, 03:06

ER

Each of 30 parents chose one of five days from Monday throug

705-805 (Hard) | Arithmetic

705-805 (Hard) | Arithmetic hide tags

banksy

14 Mar 2011, 16:31

25

6

7,062

by: HarshG7

20 Sep 2025, 02:48

ER

If p is a positive odd integer, what is the remainder when p is divide

705-805 (Hard) | Remainders

705-805 (Hard) | Remainders hide tags

BANON

23 Feb 2012, 08:09

662

9

87,446

by: bumpbot

20 Sep 2025, 01:42

ER

What is the value of integer x?

655-705 (Hard) | Absolute Values

655-705 (Hard) | Absolute Values hide tags

1, 2

jashshah

28 Feb 2015, 07:08

93

25

21,126

by: bumpbot

20 Sep 2025, 01:38

ER

GMAT Club Olympics 2024 (Day 10): In August, an Olympic venue was

555-605 (Medium) | Percent and Interest Problems

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

Bunuel

19 Jul 2024, 07:00

9

7

4,806

by: Bunuel

20 Sep 2025, 01:21

ER

If Suzy spends s dollars each month and Dave spends d dollars each

555-605 (Medium) | Word Problems

555-605 (Medium) | Word Problems hide tags

Bunuel

19 Sep 2025, 00:50

3

586

by: Souradeep17

19 Sep 2025, 21:25

ER

If a public distribution company loses 5 percent of its monthly

505-555 (Easy) | Word Problems

505-555 (Easy) | Word Problems hide tags

Bunuel

19 Sep 2025, 00:49

3

2

542

by: Souradeep17

19 Sep 2025, 21:20

ER

A patient experiencing cold-like symptoms goes to a doctor. Is the pat

Sub 505 (Easy) | Non-Math Related

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

guddo

14 Aug 2024, 07:14

4

2

3,345

by: bumpbot

19 Sep 2025, 18:18

ER

If a and b are positive integers, what is the greatest common factor o

605-655 (Medium) | Multiples and Factors

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

Bunuel

11 Jun 2020, 02:55

10

7

3,236

by: bumpbot

19 Sep 2025, 16:05

ER

Many of the students at the International School speak

705-805 (Hard) | Overlapping Sets

705-805 (Hard) | Overlapping Sets hide tags

monirjewel

12 Nov 2013, 08:41

72

16

21,376

by: bumpbot

19 Sep 2025, 14:40

How is Bill related to Betty?

Sub 505 (Easy) | Word Problems

Sub 505 (Easy) | Word Problems hide tags

ashwink

05 Mar 2017, 00:14

1

2

5,272

by: bumpbot

19 Sep 2025, 11:41

ER

If 1@1 = 1, is −2@−2 = 1 ? (1) 1@-1 = 1 (2) 0@0 = 0

655-705 (Hard) | Functions and Custom Characters

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

Bunuel

06 Apr 2020, 04:04

23

7

4,655

by: bumpbot

19 Sep 2025, 08:44

ER

n is an integer such that n ≥ 0. For n > 0, the sequence tn is defined

705-805 (Hard) | Multiples and Factors +2 tags

705-805 (Hard) | Multiples and Factors, Number Properties, Sequences hide tags

Bunuel

11 Jun 2015, 04:46

61

9

12,116

by: bumpbot

19 Sep 2025, 04:04

ER

If m and k are non-zero integers, is m a multiple of k?

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

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

Bunuel

16 Dec 2019, 02:43

11

4

4,114

by: bumpbot

19 Sep 2025, 02:12

ER

What is the highest power of 2 in n!?

705-805 (Hard) | Number Properties

705-805 (Hard) | Number Properties hide tags

GMATBusters

23 May 2020, 19:00

35

19

11,571

by: bumpbot

19 Sep 2025, 02:10

ER

Consider 20 identical pipes that supply water to a tank. What is the m

705-805 (Hard) | Work and Rate Problems

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

Bunuel

12 Jan 2022, 04:00

8

3

3,202

by: bumpbot

19 Sep 2025, 01:41

ER

Is √abcd an integer, where a,b,c,d are all prime numbers?

805+ (Hard) | Algebra, Number Properties

805+ (Hard) | Algebra, Number Properties hide tags

rajarshee

24 Oct 2015, 00:27

13

9

4,190

by: bumpbot

18 Sep 2025, 22:51

ER

16 horses can haul a load of lumber in 24 minutes. 12 horses

555-605 (Medium) | Work and Rate Problems

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

1, 2

daviesj

22 Feb 2013, 03:21

151

21

17,053

by: Aboyhasnoname

18 Sep 2025, 20:08

ER

How many hours would it take Pump A and Pump B working together, each

555-605 (Medium) | Work and Rate Problems

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

AbdurRakib

01 Jul 2016, 04:45

323

14

58,172

by: Aboyhasnoname

18 Sep 2025, 19:16

ER

Three machines, a, b, c, individually can do a certain job.

505-555 (Easy) | Work and Rate Problems

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

Bunuel

04 Jun 2025, 00:30

6

5

979

by: Aboyhasnoname

18 Sep 2025, 18:56

ER

If a computer dealer sold a few desktop computers and a few laptop

505-555 (Easy) | Word Problems

505-555 (Easy) | Word Problems hide tags

Bunuel

18 Sep 2025, 00:01

5

3

430

by: Souradeep17

18 Sep 2025, 18:22