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

78,693

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

188,507

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

487,916

by: bb

29 Aug 2025, 13:27

ER

The Given figure is a sector of a Circle with Centre at point O

605-655 (Medium) | Geometry

605-655 (Medium) | Geometry hide tags

GMATinsight

18 Jun 2015, 10:56

9

8

3,296

by: bumpbot

11 Oct 2019, 20:14

ER

Is x = 1?

505-555 (Easy) | Algebra

505-555 (Easy) | Algebra hide tags

Bunuel

19 Jun 2015, 01:55

6

5

4,688

by: Bunuel

22 Jun 2015, 06:22

ER

If x 0, is xy > 0? (1) x > 0 (2) 1/x < y

555-605 (Medium) | Inequalities

555-605 (Medium) | Inequalities hide tags

Bunuel

19 Jun 2015, 01:58

13

6

6,240

by: BelalHossain046

13 Mar 2019, 09:24

ER

If a, b, c, d, and e are positive integers such that

605-655 (Medium) | Algebra, Exponents

605-655 (Medium) | Algebra, Exponents hide tags

Bunuel

19 Jun 2015, 02:07

36

9

10,267

by: bumpbot

20 Apr 2025, 21:45

ER

If n is a positive integer, is n 1 divisible by 3?

705-805 (Hard) | Multiples and Factors

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

Bunuel

19 Jun 2015, 02:12

47

10

11,628

by: Prakruti_Patil

22 Jun 2024, 03:53

ER

If a, b, and c are positive integers such that a < b < c, is a% of b%

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

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

Bunuel

19 Jun 2015, 03:22

85

14

39,496

by: tan1107

03 Mar 2020, 07:29

ER

If k is a positive integer, is k an integer?

505-555 (Easy) | Number Properties

505-555 (Easy) | Number Properties hide tags

gmatser1

23 Jun 2015, 01:01

11

7

3,455

by: MHIKER

22 Sep 2020, 09:40

ER

Did it take a certain ship less than 3 hours to travel 9 kilometers?

555-605 (Medium) | Distance and Speed Problems

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

Bunuel

23 Jun 2015, 02:16

32

9

11,489

by: bumpbot

01 Jul 2025, 05:47

ER

Two racecar drivers, Abernathy and Berdoff, are driving around a

505-555 (Easy) | Distance and Speed Problems

505-555 (Easy) | Distance and Speed Problems hide tags

Bunuel

23 Jun 2015, 02:30

28

13

6,935

by: bumpbot

17 Nov 2025, 14:42

ER

A list kept at Town Hall contains that town's average daily temperatur

555-605 (Medium) | Statistics and Sets Problems

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

Bunuel

23 Jun 2015, 02:34

34

10

9,672

by: bumpbot

16 Sep 2024, 07:39

ER

If, x, y, and z are integers, is x even?

555-605 (Medium) | Exponents, Number Properties

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

Bunuel

23 Jun 2015, 02:47

36

14

11,564

by: NEYR0N

16 Mar 2025, 10:26

ER

If x is a positive integer, is x^2 + 6x +10 odd?

555-605 (Medium) | Number Properties

555-605 (Medium) | Number Properties hide tags

Bunuel

23 Jun 2015, 02:52

18

7

9,974

by: bumpbot

25 Oct 2023, 06:18

ER

Is the integer x odd?

555-605 (Medium) | Number Properties

555-605 (Medium) | Number Properties hide tags

Bunuel

23 Jun 2015, 02:55

20

10

9,061

by: bumpbot

04 Dec 2023, 08:41

ER

What is the value of integer x?

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

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

Bunuel

23 Jun 2015, 02:59

46

9

6,686

by: bumpbot

01 Sep 2024, 09:45

ER

Is the Triangle ABC right angled at C?

505-555 (Easy) | Geometry

505-555 (Easy) | Geometry hide tags

monk16

23 Jun 2015, 03:08

9

6

4,810

by: bumpbot

01 Apr 2021, 12:50

ER

Vertices A and B of triangle ABC lie on circle with area 25pi.

705-805 (Hard) | Geometry

705-805 (Hard) | Geometry hide tags

Harley1980

23 Jun 2015, 06:20

13

4

2,984

by: bumpbot

08 Apr 2023, 21:20

ER

Development planners detemined the number of new housing units needed

505-555 (Easy) | Word Problems

505-555 (Easy) | Word Problems hide tags

erikvm

23 Jun 2015, 11:49

45

5

16,513

by: bumpbot

25 Jun 2024, 02:24

ER

What is the average (arithmetic mean) of the first 90 measurements

Sub 505 (Easy) | Statistics and Sets Problems

Sub 505 (Easy) | Statistics and Sets Problems hide tags

mimi0102

23 Jun 2015, 22:09

26

4

15,216

by: bumpbot

11 Jan 2023, 10:47

ER

If O represents the center of a circular clock and the point of the cl

705-805 (Hard) | Geometry

705-805 (Hard) | Geometry hide tags

Bunuel

23 Jun 2015, 23:08

25

11

8,234

by: mgan

15 Nov 2021, 04:51

ER

The side of an equilateral triangle has the same length as the diagona

Sub 505 (Easy) | Geometry

Sub 505 (Easy) | Geometry hide tags

Bunuel

23 Jun 2015, 23:11

11

10

22,598

by: bumpbot

29 Jun 2025, 16:00

ER

Is the number of copies of a certain manuscript that n machines of

Sub 505 (Easy) | Work and Rate Problems

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

erikvm

24 Jun 2015, 05:26

11

4

9,580

by: bumpbot

05 Dec 2023, 21:49

ER

If a and b are non-negative integers, is a > b?

655-705 (Hard) | Exponents

655-705 (Hard) | Exponents hide tags

Bunuel

24 Jun 2015, 08:16

31

10

10,888

by: bumpbot

21 Mar 2023, 14:07

ER

Is x an integer?

655-705 (Hard) | Number Properties

655-705 (Hard) | Number Properties hide tags

camiu

25 Jun 2015, 01:43

22

11

7,546

by: bumpbot

13 Oct 2025, 23:41

ER

What is the average of A, B, and C?

655-705 (Hard) | Algebra

655-705 (Hard) | Algebra hide tags

ocavon

25 Jun 2015, 09:25

15

2

8,092

by: bumpbot

20 Jul 2025, 23:20

ER

x is a positive integer greater than two; is (x^3 + 19837)(x^2 + 5)(x

705-805 (Hard) | Number Properties

705-805 (Hard) | Number Properties hide tags

Bunuel

26 Jun 2015, 02:07

7

13

3,776

by: bumpbot

20 Dec 2019, 00:03

ER

In 2003, a then-nascent Internet search engine developed an indexing

655-705 (Hard) | Word Problems

655-705 (Hard) | Word Problems hide tags

Bunuel

26 Jun 2015, 02:10

6

5

5,556

by: bumpbot

24 Nov 2025, 09:43

ER

If b is prime and the symbol # represents one of the following operati

655-705 (Hard) | Functions and Custom Characters, Number Properties

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

Bunuel

26 Jun 2015, 02:13

8

5

4,665

by: bumpbot

14 Jan 2025, 07:51

ER

Given that A = 3y + 8x, B = 3y - 8x, C = 4y + 6x, and D = 4y - 6x

705-805 (Hard) | Algebra

705-805 (Hard) | Algebra hide tags

Bunuel

26 Jun 2015, 02:17

4

4,608

by: bumpbot

25 Dec 2024, 07:28

ER

After a long career, John C. Walden is retiring. If there are 25 assoc

555-605 (Medium) | Word Problems

555-605 (Medium) | Word Problems hide tags

Bunuel

26 Jun 2015, 02:19

5

10

5,935

by: bumpbot

08 Jan 2025, 03:33

ER

What is the area of isosceles triangle X?

505-555 (Easy) | Geometry

505-555 (Easy) | Geometry hide tags

Bunuel

26 Jun 2015, 02:22

7

9

7,315

by: bumpbot

09 Jul 2020, 01:05

ER

For a set of 3 numbers, assuming there is only one mode, does the mode

705-805 (Hard) | Statistics and Sets Problems

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

Bunuel

26 Jun 2015, 02:24

12

4

3,868

by: bumpbot

02 Jan 2025, 09:33

ER

A study involved a total of 6 barrels of a liquid mixture. If the stan

555-605 (Medium) | Statistics and Sets Problems

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

Bunuel

26 Jun 2015, 02:50

16

9

5,468

by: pierjoejoe

18 Oct 2024, 02:16

ER

S and T are two water pumps that run at constant rates. If pump T pump

655-705 (Hard) | Work and Rate Problems

655-705 (Hard) | Work and Rate Problems hide tags

Bunuel

26 Jun 2015, 02:51

43

12

9,558

by: bumpbot

09 Nov 2025, 08:38

ER

An online grocery delivers groceries for $10.00 for the first box of f

605-655 (Medium) | Word Problems

605-655 (Medium) | Word Problems hide tags

Bunuel

26 Jun 2015, 02:58

3

7

4,382

by: ankitgoswami

21 Jun 2022, 09:54

ER

If 10 - ax = bx then what is value of |a-b|?

555-605 (Medium) | Absolute Values, Number Properties

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

Harley1980

27 Jun 2015, 14:49

8

6

4,396

by: PriyanshuR

31 Aug 2025, 01:39

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

18,768

by: bumpbot

25 Feb 2024, 10:10

ER

If x is an integer, is x^3 divisible by 7

Sub 505 (Easy) | Multiples and Factors

Sub 505 (Easy) | Multiples and Factors hide tags

abhinav008

05 Jul 2015, 08:24

5

6

3,610

by: bumpbot

08 Jul 2022, 06:20

In a given month, a lawyer charged his clients at an average rate of

655-705 (Hard) | Statistics and Sets Problems

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

runkun

05 Jul 2015, 11:33

7

5

3,253

by: bumpbot

10 Dec 2025, 21:14

ER

If x is an integer, is x even?

Sub 505 (Easy) | Number Properties

Sub 505 (Easy) | Number Properties hide tags

RichaKhanna

07 Jul 2015, 00:46

1

5

4,332

by: bumpbot

02 Oct 2020, 03:05

ER

What is the value of x?

555-605 (Medium) | Number Properties

555-605 (Medium) | Number Properties hide tags

Bunuel

07 Jul 2015, 01:54

10

8

4,839

by: bumpbot

20 Sep 2023, 10:25

ER

Given that x is a positive integer, what is the greatest common diviso

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

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

Bunuel

07 Jul 2015, 02:28

57

11

9,238

by: bumpbot

28 Mar 2025, 21:54

ER

In the town of Z, the town lion roars on some days and not on others.

555-605 (Medium) | Probability

555-605 (Medium) | Probability hide tags

Bunuel

07 Jul 2015, 02:43

20

7

7,777

by: bumpbot

06 Dec 2025, 06:10

ER

A zoo has w wildebeests, y yaks, z zebras, and no other animals. If

655-705 (Hard) | Probability

655-705 (Hard) | Probability hide tags

Bunuel

07 Jul 2015, 02:44

34

8

7,305

by: bumpbot

19 Jun 2025, 23:11

ER

A hot dog vendor who sells only hot dogs and soft drinks charges $3

555-605 (Medium) | Word Problems

555-605 (Medium) | Word Problems hide tags

Bunuel

07 Jul 2015, 02:47

4

7

4,633

by: bumpbot

20 Jul 2021, 07:59

ER

If the price of a gallon of milk and a loaf of bread both increased by

505-555 (Easy) | Word Problems

505-555 (Easy) | Word Problems hide tags

Bunuel

07 Jul 2015, 02:49

1

9

6,130

by: bumpbot

03 Apr 2023, 20:26

ER

What percentage of families in the state have annual incomes over $50

555-605 (Medium) | Percent and Interest Problems

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

Bunuel

09 Jul 2015, 03:56

19

4

6,528

by: pierjoejoe

10 Oct 2024, 03:57

ER

The sum of the digits of a three-digit number is 11. What is the produ

555-605 (Medium) | Fractions and Ratios

555-605 (Medium) | Fractions and Ratios hide tags

Bunuel

09 Jul 2015, 04:07

13

11

9,810

by: bumpbot

14 Oct 2018, 18:23

ER

How much money would Kimberly have saved if she had bought her cheese

705-805 (Hard) | Word Problems

705-805 (Hard) | Word Problems hide tags

Bunuel

09 Jul 2015, 04:12

23

7

4,444

by: bumpbot

30 Mar 2024, 08:04

ER

If x is an integer such that x > 0, is it true that x is an integer?

555-605 (Medium) | Number Properties

555-605 (Medium) | Number Properties hide tags

Bunuel

09 Jul 2015, 04:19

3

6

3,729

by: Bunuel

13 Jul 2015, 03:06

ER

Over the last two years, who made more money investing in the stock

705-805 (Hard) | Word Problems

705-805 (Hard) | Word Problems hide tags

Bunuel

10 Jul 2015, 02:23

47

8

6,191

by: bumpbot

15 Nov 2025, 00:34