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

179

15

79,149

by: thisisakr

16 Apr 2026, 11:46

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100 Hardest and easiest questions for DS as of April 2026

1, 2

Bunuel

01 Jan 2026, 05:45

857

24

188,775

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

488,368

by: bb

29 Aug 2025, 13:27

ER

If p and q are prime numbers, is pq+1 an odd number?

555-605 (Medium) | Number Properties

555-605 (Medium) | Number Properties hide tags

Bunuel

30 Jun 2023, 04:00

2

3

1,192

by: Bunuel

14 Sep 2025, 23:58

ER

A computer dealership has a number of computers to be sold by its sale

555-605 (Medium) | Word Problems

555-605 (Medium) | Word Problems hide tags

Bunuel

12 Sep 2025, 00:37

4

7

578

by: Bunuel

15 Sep 2025, 00:10

ER

Iris delivered newspapers for 7 consecutive weeks. In the sequence

505-555 (Easy) | Word Problems

505-555 (Easy) | Word Problems hide tags

Bunuel

11 Aug 2023, 05:00

46

3

15,992

by: bumpbot

15 Sep 2025, 08:08

ER

How many different prime factors does x have?

655-705 (Hard) | Number Properties

655-705 (Hard) | Number Properties hide tags

Harley1980

13 Apr 2015, 00:57

12

5

3,963

by: bumpbot

15 Sep 2025, 13:11

ER

At a certain university, all employees can be categorized as either pr

705-805 (Hard) | Statistics and Sets Problems

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

Bunuel

18 May 2017, 00:18

32

8

7,585

by: bumpbot

15 Sep 2025, 13:58

ER

What is the units digit of the non-negative integer y?

705-805 (Hard) | Fractions and Ratios, Number Properties

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

Bunuel

25 Nov 2014, 08:30

14

11

5,302

by: bumpbot

15 Sep 2025, 16:13

ER

If xy 0, is x^y > 0 ?

655-705 (Hard) | Exponents +2 tags

655-705 (Hard) | Exponents, Inequalities, Roots hide tags

Bunuel

20 Jul 2014, 11:23

63

11

11,935

by: bumpbot

16 Sep 2025, 06:24

ER

If n is a positive integer, what is the units digit of n^28? (I) n is

655-705 (Hard) | Number Properties

655-705 (Hard) | Number Properties hide tags

Russ19

28 Apr 2020, 09:08

11

3

1,652

by: bumpbot

16 Sep 2025, 08:46

ER

A certain high school with a total enrollment of 900 student

555-605 (Medium) | Word Problems

555-605 (Medium) | Word Problems hide tags

Bunuel

21 Oct 2022, 07:41

84

5

46,235

by: bumpbot

16 Sep 2025, 23:36

ER

What is the value of the two-digit number TU

655-705 (Hard) | Number Properties

655-705 (Hard) | Number Properties hide tags

fireinbelly

30 Apr 2013, 05:45

20

6

8,620

by: bumpbot

17 Sep 2025, 12:58

ER

What is the value of positive integer p? (1) 300 multiplied by p is

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

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

Bunuel

28 Jun 2023, 01:30

3

1,387

by: bumpbot

17 Sep 2025, 13:04

ER

A family's savings for a month is calculated by subtracting its total

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

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

amanvermagmat

21 Jul 2018, 11:03

6

2

2,907

by: bumpbot

17 Sep 2025, 20:36

ER

The price of a certain property increased by 10% in the first year

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

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

Bunuel

02 Aug 2023, 01:30

5

4

5,986

by: KarishmaB

17 Sep 2025, 21:22

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11 New OG Logic-Based DS for GMAT Focus; Analysis of OG22 vs. 2024

655-705 (Hard) | Word Problems

655-705 (Hard) | Word Problems hide tags

GMATCoachBen

10 Mar 2024, 22:35

20

3

6,489

by: bumpbot

17 Sep 2025, 23:51

ER

Is |x| > x ? (1) x > |y| (2) x is a non-negative integer

655-705 (Hard) | Absolute Values, Inequalities

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

chetan2u

21 Feb 2017, 07:54

8

7

3,476

by: bumpbot

18 Sep 2025, 04:36

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

17,741

by: bumpbot

18 Sep 2025, 17:19

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

3,218

by: bumpbot

19 Sep 2025, 01:41

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

11,611

by: bumpbot

19 Sep 2025, 02:10

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

4,679

by: bumpbot

19 Sep 2025, 08:44

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

7,079

by: HarshG7

20 Sep 2025, 02:48

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

3,635

by: bumpbot

20 Sep 2025, 07:01

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

3,014

by: bumpbot

21 Sep 2025, 05:06

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

11,357

by: bumpbot

21 Sep 2025, 15:52

ER

Of the 240 toy-import businesses in an association, 80 percent

605-655 (Medium) | Overlapping Sets

605-655 (Medium) | Overlapping Sets hide tags

guddo

24 Jan 2024, 02:32

26

3

7,995

by: bumpbot

22 Sep 2025, 18:02

ER

Events A, B, C and D are all possible outcomes of an experiment. In t

605-655 (Medium) | Probability

605-655 (Medium) | Probability hide tags

MathRevolution

11 Apr 2018, 05:54

19

8

5,059

by: bumpbot

22 Sep 2025, 21:26

ER

In a certain club, how many people serve on both the Recruitment and

555-605 (Medium) | Overlapping Sets

555-605 (Medium) | Overlapping Sets hide tags

Bunuel

01 Jan 2021, 07:45

4

3

1,914

by: bumpbot

23 Sep 2025, 04:41

ER

Brian takes a weekend trip to visit a friend. What is his average rate

555-605 (Medium) | Distance and Speed Problems

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

aashu4uiit

23 Nov 2014, 13:35

29

7

12,701

by: bumpbot

23 Sep 2025, 05:35

ER

How many books in a certain library have more than 250 pages?

655-705 (Hard) | Statistics and Sets Problems

655-705 (Hard) | Statistics and Sets Problems hide tags

Bunuel

26 Jan 2022, 03:30

12

4

2,910

by: Ters

23 Sep 2025, 06:09

ER

In the telephone number 936-215X, what digit does X

555-605 (Medium) | Word Problems

555-605 (Medium) | Word Problems hide tags

CaspAreaGuy

08 Sep 2007, 23:56

35

10

13,769

by: bumpbot

23 Sep 2025, 07:02

ER

Esther bought a computer at a price of p dollars, and she paid a sales

805+ (Hard) | Word Problems

805+ (Hard) | Word Problems hide tags

Bunuel

21 Apr 2024, 08:45

52

8

9,524

by: Aboyhasnoname

23 Sep 2025, 08:28

ER

Is the perimeter of a triangle greater than 1?

705-805 (Hard) | Geometry

705-805 (Hard) | Geometry hide tags

gmat_crack

11 Jul 2013, 11:30

55

6

11,615

by: bumpbot

23 Sep 2025, 19:46

ER

Each time Meg has visited a certain ice cream parlor with friends, she

705-805 (Hard) | Word Problems

705-805 (Hard) | Word Problems hide tags

GMATF685

16 Nov 2023, 22:15

29

4

7,201

by: bumpbot

24 Sep 2025, 03:12

ER

Is x > 0? (1) x^6 > x^7 (2) x^7 > x^8

555-605 (Medium) | Inequalities

555-605 (Medium) | Inequalities hide tags

aDAMS

04 Apr 2023, 10:20

73

14

14,835

by: bumpbot

24 Sep 2025, 09:17

ER

The least common multiple of positive integers p and q is 72. What is

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

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

Russ19

04 Feb 2020, 11:18

44

5

7,919

by: bumpbot

24 Sep 2025, 09:33

ER

If |12x − 3| = |3x + 15|, what is the value of x?

655-705 (Hard) | Absolute Values

655-705 (Hard) | Absolute Values hide tags

Bunuel

10 Aug 2018, 03:47

18

7

6,297

by: nandini14

24 Sep 2025, 10:53

ER

If a, b, c, and d are different positive odd numbers, what is the medi

655-705 (Hard) | Statistics and Sets Problems

655-705 (Hard) | Statistics and Sets Problems hide tags

BillyZ

27 Mar 2017, 17:57

21

9

8,252

by: Ashley98789

24 Sep 2025, 19:52

ER

What contains more calories: a gram of refined wheat.

655-705 (Hard) | Fractions and Ratios

655-705 (Hard) | Fractions and Ratios hide tags

NextstopISB

18 Apr 2025, 10:23

4

3

1,485

by: Bunuel

25 Sep 2025, 01:58

ER

On six consecutive vocabulary quizzes, Kelvin's lowest score was 70.

655-705 (Hard) | Word Problems

655-705 (Hard) | Word Problems hide tags

Bunuel

07 Apr 2020, 04:21

11

5

2,877

by: bumpbot

25 Sep 2025, 04:06

ER

Is x negative? (1) x^2 + 25 = 89 (2) x^3 < x

555-605 (Medium) | Number Properties

555-605 (Medium) | Number Properties hide tags

Bunuel

27 Aug 2015, 01:30

4

5

3,236

by: bumpbot

25 Sep 2025, 14:32

ER

What is the value of x ? (1) 4^(x + 1) + 4^x = 320 (2) x^2 = 9

Sub 505 (Easy) | Algebra, Exponents

Sub 505 (Easy) | Algebra, Exponents hide tags

gmatt1476

21 Sep 2019, 16:49

36

4

12,030

by: bumpbot

25 Sep 2025, 20:32

ER

Is zw positive? (1) z + w^3 = 20 (2) z is positive

Sub 505 (Easy) | Algebra, Inequalities

Sub 505 (Easy) | Algebra, Inequalities hide tags

Bunuel

06 Oct 2016, 05:12

54

11

21,409

by: bumpbot

25 Sep 2025, 20:42

ER

Of 80 students in the eighth grade, 35 played basketball and 19 made t

555-605 (Medium) | Overlapping Sets

555-605 (Medium) | Overlapping Sets hide tags

anceer

27 Nov 2014, 10:58

17

6

7,186

by: bumpbot

26 Sep 2025, 05:16

ER

12 Days of Christmas GMAT Competition - Day 7: j, 9, k, and m are in a

805+ (Hard) | Sequences

805+ (Hard) | Sequences hide tags

Bunuel

20 Dec 2022, 07:00

25

4

4,578

by: bumpbot

26 Sep 2025, 06:15

ER

If Mark saved an average (arithmetic mean) of $80 per week for 3 conse

505-555 (Easy) | Word Problems

505-555 (Easy) | Word Problems hide tags

Bunuel

23 Dec 2014, 07:20

10

8

9,257

by: bumpbot

26 Sep 2025, 09:27

ER

If a and b are integers and ax > bx, is x > 0 ?

705-805 (Hard) | Absolute Values, Inequalities

705-805 (Hard) | Absolute Values, Inequalities hide tags

Bunuel

11 Feb 2023, 02:43

10

5

3,583

by: bumpbot

27 Sep 2025, 06:15

ER

An office supply store received a shipment of boxes of pencils. How ma

505-555 (Easy) | Word Problems

505-555 (Easy) | Word Problems hide tags

Bunuel

15 Nov 2017, 08:38

12

7

12,036

by: bumpbot

27 Sep 2025, 08:52

ER

How much greater is the square of the sum of three different positive

655-705 (Hard) | Word Problems

655-705 (Hard) | Word Problems hide tags

Bunuel

24 Apr 2015, 03:05

15

5

6,018

by: bumpbot

27 Sep 2025, 13:06

ER

If point x is inside a circle with center o and radius 2, is

555-605 (Medium) | Geometry

555-605 (Medium) | Geometry hide tags

vanidhar

13 Oct 2010, 02:02

27

3

11,109

by: bumpbot

27 Sep 2025, 23:54

ER

x gallon 40% alcohol solution is mixed with another y gallon10% alcoho

655-705 (Hard) | Mixture Problems

655-705 (Hard) | Mixture Problems hide tags

GMATinsight

25 Apr 2019, 20:46

28

7

5,751

by: bumpbot

28 Sep 2025, 00:16

ER

If a club made a gross profit of $0.25 for each candy bar it sold, how

655-705 (Hard) | Word Problems

655-705 (Hard) | Word Problems hide tags

Bunuel

23 May 2020, 08:10

135

7

16,977

by: bumpbot

28 Sep 2025, 02:04