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

78,789

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

856

24

188,563

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

487,994

by: bb

29 Aug 2025, 13:27

ER

If a merchant purchased a Boombox CD for x dollars

555-605 (Medium) | Percent and Interest Problems

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

GMATNinja

18 Apr 2022, 02:18

8

2

2,688

by: bumpbot

25 Jan 2025, 05:38

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

86

12

25,316

by: bumpbot

12 Mar 2025, 15:42

If a number is drawn at random from the first 1000 positive

Poor Quality

Poor Quality hide tags

GMATT73

23 Nov 2005, 07:19

75

14

26,647

by: Nevernevergiveup

12 Jul 2016, 22:53

ER

If a number is selected at random from a set of 6 distinct integers

555-605 (Medium) | Number Properties, Probability

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

Bunuel

26 Nov 2019, 01:33

10

6

3,663

by: bumpbot

08 Dec 2022, 14:46

ER

If a number N is decreased by p percent and then the resulting value

805+ (Hard) | Algebra

805+ (Hard) | Algebra hide tags

santorasantu

01 Oct 2015, 06:32

76

18

18,178

by: bumpbot

26 Mar 2025, 22:24

ER

If a number n is pulled out of a hat at random

555-605 (Medium) | Probability

555-605 (Medium) | Probability hide tags

HKD1710

15 Jan 2017, 08:54

5

2

2,431

by: bumpbot

24 Apr 2026, 12:29

ER

If a pencil is selected at random from a desk drawer, what

555-605 (Medium) | Probability

555-605 (Medium) | Probability hide tags

sunita123

14 Jul 2014, 14:23

26

11

11,675

by: bumpbot

13 Apr 2026, 11:32

ER

If a point P(x,y) inside the above square ABCD is chosen at random and

805+ (Hard) | Coordinate Plane, Probability

805+ (Hard) | Coordinate Plane, Probability hide tags

kevincan

28 Aug 2006, 09:21

27

16

8,420

by: bumpbot

02 Jun 2025, 14:46

ER

If a positive decimal d has 7 nonzero digits, is d > 100 ?

555-605 (Medium) | Number Properties

555-605 (Medium) | Number Properties hide tags

Bunuel

15 Sep 2020, 07:15

11

3

4,257

by: bumpbot

13 Feb 2024, 03:05

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If a positive integer m is divided by d, the remainder is 5. What is

805+ (Hard) | Multiples and Factors, Remainders

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

Bunuel

09 Dec 2019, 01:16

30

10

7,704

by: bumpbot

28 Jun 2025, 11:52

ER

If a positive integer n has 4 different factors, what is the value of

605-655 (Medium) | Number Properties

605-655 (Medium) | Number Properties hide tags

Bunuel

14 Jun 2023, 04:00

2

1,438

by: SaquibHGMATWhiz

08 Aug 2023, 09:59

ER

If a positive integer n has 6 different positive factors, what is the

655-705 (Hard) | Multiples and Factors

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

Bunuel

05 Dec 2022, 02:30

6

4

2,026

by: bumpbot

15 Jul 2025, 13:35

ER

If a positive odd integer n has 8 positive factors, how many distinct

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

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

Bunuel

28 Apr 2022, 02:16

6

1

4,453

by: Nidzo

28 Apr 2022, 03:21

ER

If a price was increased by x% and then decreased by y%, is the new pr

805+ (Hard) | Percent and Interest Problems

805+ (Hard) | Percent and Interest Problems hide tags

Bunuel

05 Feb 2019, 23:59

41

8

17,863

by: Dream009

20 Dec 2025, 20:15

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

550

by: Souradeep17

19 Sep 2025, 21:20

ER

If a real estate agent received a commission of 6 percent of the

Sub 505 (Easy) | Word Problems

Sub 505 (Easy) | Word Problems hide tags

Bunuel

12 Dec 2014, 07:21

18

8

78,434

by: bumpbot

14 Dec 2025, 04:13

ER

If a rectangle has length a and width b, what is its area?

505-555 (Easy) | Geometry

505-555 (Easy) | Geometry hide tags

Bunuel

14 Dec 2018, 01:07

4

3

3,144

by: bumpbot

28 Aug 2023, 16:03

ER

If a rectangular region has perimeter P inches and area A sq

605-655 (Medium) | Geometry

605-655 (Medium) | Geometry hide tags

1, 2

olifurlong

17 Jun 2021, 00:54

615

38

105,586

by: bumpbot

28 Jan 2025, 14:05

ER

If A represents the tens digit and B represents the units digit in the

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

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

Bunuel

23 Oct 2023, 01:30

2

4

1,326

by: Bunuel

09 Sep 2025, 08:42

If a rope is cut into three pieces of unequal length, what is the leng

505-555 (Easy) | Algebra, Word Problems

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

mciatto

31 Aug 2003, 16:21

43

11

28,240

by: bumpbot

06 Sep 2025, 01:42

ER

If a salesman received a commission of 3% of the sales

555-605 (Medium) | Word Problems

555-605 (Medium) | Word Problems hide tags

ashwink

01 Mar 2017, 05:51

9

2

17,727

by: bumpbot

18 Sep 2025, 17:19

ER

If a school district paid a total of $35 per desk for x desks and a to

Sub 505 (Easy) | Word Problems

Sub 505 (Easy) | Word Problems hide tags

Bunuel

26 Apr 2019, 02:02

17

10

13,782

by: bumpbot

04 Feb 2025, 14:40

ER

If a semicircle and triangle are pieced together to form the figure sh

555-605 (Medium) | Geometry

555-605 (Medium) | Geometry hide tags

Bunuel

17 Oct 2020, 13:06

2

4

1,629

by: CEdward

19 Feb 2021, 10:11

ER

If a sequence A has 200 terms, what is the 100th term of A?

Sub 505 (Easy) | Sequences

Sub 505 (Easy) | Sequences hide tags

Bunuel

17 Apr 2018, 05:36

1

2,249

by: chetna14

18 Apr 2018, 21:28

ER

If a sequence N has 150 terms, what is the 140th term of sequence N?

Sub 505 (Easy) | Sequences

Sub 505 (Easy) | Sequences hide tags

Bunuel

26 Sep 2018, 05:33

1

1,724

by: GMATinsight

26 Sep 2018, 06:37

ER

If a set consists of a certain number of consecutive integers, does th

505-555 (Easy) | Multiples and Factors +2 tags

505-555 (Easy) | Multiples and Factors, Number Properties, Statistics and Sets Problems hide tags

chetan2u

06 Dec 2020, 04:44

2

1

1,319

by: globaldesi

06 Dec 2020, 04:58

ER

If a set of 6 positive integers has an average (arithmetic mean) of 53

555-605 (Medium) | Word Problems

555-605 (Medium) | Word Problems hide tags

Bunuel

07 Jan 2018, 23:07

5

2

1,766

by: bumpbot

11 Sep 2025, 23:01

ER

If a shopkeeper purchased an item at a cost of x dollars and sold it

555-605 (Medium) | Percent and Interest Problems, Word Problems

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

Bunuel

16 Oct 2018, 01:54

5

2

2,671

by: bumpbot

30 Aug 2020, 19:37

ER

If a square with 20 as one side’s length and decreases to a and b show

705-805 (Hard) | Geometry

705-805 (Hard) | Geometry hide tags

MathRevolution

21 Mar 2016, 18:29

8

7

2,577

by: bumpbot

13 Jan 2022, 07:23

ER

If a stationery shop sells notebooks in A-4 size and A-5 size paper

505-555 (Easy) | Word Problems

505-555 (Easy) | Word Problems hide tags

Bunuel

28 Apr 2021, 08:00

1

891

by: MarmikUpadhyay

28 Apr 2021, 21:02

ER

If a store sold 30 more televisions this month than last month, by wha

505-555 (Easy) | Word Problems

505-555 (Easy) | Word Problems hide tags

Bunuel

29 Dec 2020, 23:03

1

1,493

by: imeanup

30 Dec 2020, 04:41

ER

If a student is selected at random from Learngood Elementary, what is

Sub 505 (Easy) | Probability

Sub 505 (Easy) | Probability hide tags

Bunuel

25 Jul 2018, 05:12

9

5

5,995

by: bumpbot

22 Jul 2025, 07:57

ER

If a teacher distributed 105 candies to 50 students in her class, such

655-705 (Hard) | Word Problems

655-705 (Hard) | Word Problems hide tags

Bunuel

20 Feb 2023, 07:41

3

2

1,674

by: bumpbot

28 Jul 2024, 07:38

ER

If a telemarketer earns a $50 commission on each successful sale, how

655-705 (Hard) | Word Problems

655-705 (Hard) | Word Problems hide tags

ExpertsGlobal5

26 Feb 2026, 20:00

6

4

456

by: ExpertsGlobal5

01 Mar 2026, 11:45

ER

If a total of 30 puppies is displayed in the two windows of a pet stor

555-605 (Medium) | Word Problems

555-605 (Medium) | Word Problems hide tags

Bunuel

29 Nov 2023, 02:30

1

962

by: T4Star

01 Dec 2023, 00:50

ER

If a total of 55 books were sold at a community book fair and if each

555-605 (Medium) | Overlapping Sets

555-605 (Medium) | Overlapping Sets hide tags

Bunuel

08 Jun 2022, 07:30

1

1,085

by: sanjitscorps18

08 Jun 2022, 08:02

ER

If a total of 84 students are enrolled in two sections of a calculus

Sub 505 (Easy) | Overlapping Sets, Word Problems

Sub 505 (Easy) | Overlapping Sets, Word Problems hide tags

Bunuel

22 Dec 2014, 08:48

17

11

11,678

by: bumpbot

22 Oct 2023, 11:38

If a train traveled a route of 1,000 kilometers

605-655 (Medium) | Distance and Speed Problems

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

bhargavhhhhhhhh

12 Apr 2025, 00:19

7

1

1,592

by: Dereno

12 Apr 2025, 01:05

ER

If a triangle has angle measures of x, y, and z, what is the value of

Sub 505 (Easy) | Geometry

Sub 505 (Easy) | Geometry hide tags

Bunuel

02 Feb 2022, 05:30

1

1,180

by: Charli08

05 Feb 2022, 04:38

ER

If a triangle has one side of 3 cm and another side of 4 cm, how long

555-605 (Medium) | Geometry

555-605 (Medium) | Geometry hide tags

Bunuel

14 Feb 2016, 04:16

6

3

7,294

by: bumpbot

20 Sep 2022, 11:21

ER

If a triangle inscribed in a circle has area 40, what is the

655-705 (Hard) | Geometry

655-705 (Hard) | Geometry hide tags

rxs0005

22 Mar 2011, 09:46

16

15

7,033

by: bumpbot

13 Nov 2023, 18:20

ER

If a triangle is inscribed in a circle such that a length of a side of

555-605 (Medium) | Geometry

555-605 (Medium) | Geometry hide tags

roastedchips

06 Jul 2017, 08:06

10

7

3,274

by: Pastillita

08 Mar 2022, 13:48

ER

If a truck averages 20 miles per gallon of gasoline on the first third

555-605 (Medium) | Word Problems

555-605 (Medium) | Word Problems hide tags

Bunuel

28 Feb 2025, 01:30

1

724

by: ManifestDreamMBA

28 Feb 2025, 01:48

ER

If a typist at Company X can type 75 words per a minute, how many mist

Sub 505 (Easy) | Work and Rate Problems

Sub 505 (Easy) | Work and Rate Problems hide tags

Bunuel

31 Jul 2022, 06:15

1

1,410

by: rajchotu02

31 Jul 2022, 08:09

ER

If a wire 27 meters long is cut into three pieces of three

555-605 (Medium) | Arithmetic

555-605 (Medium) | Arithmetic hide tags

mydreammba

01 Feb 2012, 08:05

44

16

21,962

by: bumpbot

11 Aug 2024, 09:12

ER

If a^(1/2) is an integer, what is the value of a?

555-605 (Medium) | Inequalities

555-605 (Medium) | Inequalities hide tags

Bunuel

30 Oct 2019, 23:12

1

2

1,324

by: Archit3110

31 Oct 2019, 00:54

ER

If a^(1/2)=b, what is the value of integer b?

555-605 (Medium) | Algebra

555-605 (Medium) | Algebra hide tags

chetan2u

11 Oct 2019, 19:26

24

6

4,809

by: bumpbot

12 Feb 2025, 09:34

ER

If a^{2/3} - b^{2/3} = 12, then \sqrt[3]{a} + \sqrt[3]{b} = ?

805+ (Hard) | Algebra, Roots

805+ (Hard) | Algebra, Roots hide tags

Bunuel

06 Nov 2014, 09:02

45

9

11,441

by: bumpbot

24 Feb 2025, 07:45

ER

If a^2 - b^2 = 0, does a = 0? (1) ab = 0 (2) b = -b

605-655 (Medium) | Algebra

605-655 (Medium) | Algebra hide tags

hkhanexam

07 Oct 2020, 01:57

13

4

3,740

by: bumpbot

03 Apr 2023, 04:58

ER

if a^2 * a^b = a^z ,

805+ (Hard) | Algebra

805+ (Hard) | Algebra hide tags

GMATBusters

11 Jul 2020, 19:16

19

16

2,503

by: Kinshook

14 Jul 2020, 10:17