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

79,120

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

188,758

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

488,341

by: bb

29 Aug 2025, 13:27

ER

Is a + b > 0? (1) |a| > |b| (2) a < b

605-655 (Medium) | Absolute Values, Inequalities

605-655 (Medium) | Absolute Values, Inequalities hide tags

chetan2u

20 Nov 2017, 10:19

13

7

3,555

by: chetan2u

25 Jan 2021, 22:14

ER

If a and b are two distinct positive integers, what is the largest num

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

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

mangamma

19 Apr 2019, 09:18

11

4

3,554

by: bumpbot

14 Nov 2023, 07:07

ER

If a is less than 80% of b, is a less than 50?

555-605 (Medium) | Percent and Interest Problems

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

Bunuel

11 Feb 2020, 01:17

8

9

3,554

by: bumpbot

04 Aug 2022, 18:47

ER

Is 0 > ab?

505-555 (Easy) | Inequalities

505-555 (Easy) | Inequalities hide tags

Bunuel

30 Dec 2014, 07:44

11

3,554

by: HKD1710

21 Aug 2016, 06:16

ER

At the end of year X, was the number of self-employed men mo

555-605 (Medium) | Percent and Interest Problems

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

fozzzy

06 Jul 2013, 03:25

1

3

3,554

by: bumpbot

09 Jan 2016, 14:49

ER

Is y = 7?

555-605 (Medium) | Algebra

555-605 (Medium) | Algebra hide tags

Bunuel

09 Mar 2016, 13:35

4

5

3,553

by: bumpbot

21 Jul 2020, 02:10

ER

What is the value of x ? (1) xy = 6 (2) x + y = 5

555-605 (Medium) | Algebra

555-605 (Medium) | Algebra hide tags

Bunuel

15 Jan 2018, 08:38

3

5

3,552

by: bumpbot

24 Feb 2020, 03:37

ER

Does the graph of f(x)=ax^2+bx+c have 2 intersections with axis-x? (1)

655-705 (Hard) | Coordinate Plane, Functions and Custom Characters

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

MBA20

06 Apr 2019, 22:30

29

3

3,551

by: bumpbot

05 Apr 2026, 05:44

ER -1

Mickey made an X dollars loan at the beginning of 1996. Travis, who is

505-555 (Easy) | Percent and Interest Problems, Word Problems

505-555 (Easy) | Percent and Interest Problems, Word Problems hide tags

Bunuel

19 Jul 2016, 03:34

7

3,551

by: Rajiv11944

12 Sep 2024, 12:05

ER

What is the area of the triangle PQR in the circle shown above?

705-805 (Hard) | Geometry

705-805 (Hard) | Geometry hide tags

Bunuel

05 Sep 2018, 23:40

16

7

3,551

by: bumpbot

26 Jun 2023, 10:40

ER

If m is a positive integer, is m/24 also an integer ?

705-805 (Hard) | Number Properties

705-805 (Hard) | Number Properties hide tags

shiblee

14 Mar 2018, 06:58

14

4

3,550

by: bumpbot

07 Aug 2024, 11:18

ER

If x and y are greater than 1, is the largest prime factor of x greate

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

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

Bunuel

22 Apr 2016, 04:46

11

3

3,550

by: bumpbot

27 Jun 2023, 14:32

ER

On January, 1, 2002, Michael invested a certain amount of money at r p

505-555 (Easy) | Percent and Interest Problems

505-555 (Easy) | Percent and Interest Problems hide tags

Bunuel

06 Sep 2019, 01:04

4

9

3,550

by: bumpbot

31 Dec 2022, 01:57

ER

In the xy-plane, if line m has negative slope and passes through the

705-805 (Hard) | Coordinate Plane

705-805 (Hard) | Coordinate Plane hide tags

Bunuel

19 Jan 2018, 10:45

5

3,550

by: bumpbot

13 Sep 2020, 16:10

ER

Is a > 0?

655-705 (Hard) | Number Properties

655-705 (Hard) | Number Properties hide tags

chetan2u

22 Jan 2017, 03:50

7

6

3,549

by: chetan2u

10 Jun 2017, 20:08

ER

If x, y and z are Integers and -2< z <2, z is not equal to 0, Is (x+y)

655-705 (Hard) | Inequalities, Min-Max Problems

655-705 (Hard) | Inequalities, Min-Max Problems hide tags

GMATinsight

18 Oct 2016, 08:04

9

3

3,548

by: bumpbot

23 Sep 2023, 03:49

ER

What is the greatest common divisor of a + b and 4?

505-555 (Easy) | Multiples and Factors

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

Maksym

29 Jun 2014, 08:53

7

2

3,548

by: GSBae

09 Sep 2014, 06:55

ER

If r, s, and t are integers, is rs + t divisible by 2?

505-555 (Easy) | Multiples and Factors

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

Bunuel

18 Oct 2016, 23:33

5

3,547

by: bumpbot

23 Jun 2023, 04:56

ER

If a*b = −8, what is the value of a + b? (1) a − b = 6 (2) a^2*b = 32

655-705 (Hard) | Algebra

655-705 (Hard) | Algebra hide tags

Bunuel

26 Nov 2019, 09:33

3

3,547

by: Crytiocanalyst

15 Oct 2021, 06:27

ER

What is the cube root of z? (1) The 5th root of z is 243. (2) The 25

Sub 505 (Easy) | Roots

Sub 505 (Easy) | Roots hide tags

Bunuel

14 Aug 2019, 01:22

5

3,547

by: Bunuel

10 Sep 2019, 01:23

An artist painted a series of 5 landscapes, titled Midnight 1-5

705-805 (Hard) | Fractions and Ratios

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

MT1302

22 Mar 2024, 08:30

12

3

3,545

by: bumpbot

25 Jul 2025, 04:20

ER

The sum of two positive integers is 21. What is the value of the large

555-605 (Medium) | Algebra, Number Properties

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

Bunuel

02 Apr 2018, 21:31

4

3,544

by: GMATinsight

03 Apr 2018, 01:20

ER

What is the value of m + n ? (1) mn = -8 (2) -2m = n

555-605 (Medium) | Algebra

555-605 (Medium) | Algebra hide tags

Bunuel

03 Mar 2021, 14:34

5

3

3,543

by: Bunuel

12 Apr 2021, 01:15

ER

What is the value of |x| x ? (1) x 0 (2) |x| > 0

505-555 (Easy) | Absolute Values

505-555 (Easy) | Absolute Values hide tags

Bunuel

06 Sep 2021, 01:30

16

7

3,542

by: bumpbot

29 Oct 2024, 22:48

For a given triangle with sides x,3x and 24, what is the

705-805 (Hard) | Geometry

705-805 (Hard) | Geometry hide tags

mau5

01 Aug 2013, 03:37

17

10

3,542

by: bumpbot

14 Sep 2023, 10:46

ER

What is the volume of a cube with edge e?

555-605 (Medium) | Geometry

555-605 (Medium) | Geometry hide tags

rxs0005

26 Nov 2010, 07:24

2

3

3,542

by: bumpbot

14 Dec 2021, 00:38

ER

x, y, and z are consecutive even numbers. What is the average of x, y,

555-605 (Medium) | Statistics and Sets Problems

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

Bunuel

01 Jul 2018, 20:44

6

3,542

by: bumpbot

01 Jul 2021, 06:47

ER

A box has some red and some green balls in it. There are no balls of

505-555 (Easy) | Probability

505-555 (Easy) | Probability hide tags

Bunuel

04 Aug 2021, 05:30

4

2

3,540

by: bumpbot

23 Jan 2026, 10:00

ER

What is the median of five integers 20, 22, 26, 30 and a?

805+ (Hard) | Statistics and Sets Problems

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

Bunuel

13 Mar 2016, 09:24

12

5

3,540

by: glagad

14 Sep 2024, 23:37

ER

There are x and y number of integers respectively in Set X and Set Y,

705-805 (Hard) | Number Properties, Overlapping Sets

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

chetan2u

25 Mar 2016, 05:34

17

8

3,539

by: bumpbot

26 Oct 2023, 02:33

ER

If q > 1, what is the value of integer q?

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

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

Bunuel

25 Dec 2016, 02:35

20

12

3,539

by: bumpbot

07 Sep 2019, 09:42

ER

If x is a positive integer, is √√x an integer? (1) x is the square of

505-555 (Easy) | Number Properties, Roots

505-555 (Easy) | Number Properties, Roots hide tags

danzig

21 May 2021, 05:12

8

3

3,539

by: BelalHossain046

30 Mar 2019, 12:07

ER

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

555-605 (Medium) | Number Properties

555-605 (Medium) | Number Properties hide tags

bschool83

04 Oct 2017, 01:13

4

3,539

by: bumpbot

21 Nov 2018, 20:02

ER

In triangle ABC above, is AC greater than 4?

705-805 (Hard) | Geometry

705-805 (Hard) | Geometry hide tags

jefferyk

22 Jul 2020, 23:24

13

4

3,538

by: bumpbot

08 Feb 2023, 12:13

ER

If a, b, and c are digits, is a + b + c a multiple of 9? A digit is on

555-605 (Medium) | Multiples and Factors

555-605 (Medium) | Multiples and Factors hide tags

Bunuel

29 Oct 2017, 01:59

2

3,538

by: bumpbot

06 Apr 2021, 15:57

ER

If x is the sum of n consecutive positive integers, and n>2, is n

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

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

Bunuel

25 Jan 2023, 02:30

9

7

3,537

by: fdfd97

22 May 2023, 22:34

ER

What is the value of the positive integer x? (1) 21x is a multiple of

505-555 (Easy) | Multiples and Factors

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

Bunuel

29 Sep 2021, 01:00

5

4

3,537

by: SaquibHGMATWhiz

02 Jan 2023, 08:18

ER

N is a 3-digit number, and the sum o

705-805 (Hard) | Word Problems

705-805 (Hard) | Word Problems hide tags

BrentGMATPrepNow

11 Jun 2018, 07:01

16

7

3,536

by: Dheeraj_079

31 Jul 2024, 23:22

ER

Is the positive Integer x a perfect square? 1) Sum of all factors of

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

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

GMATinsight

19 Jan 2018, 07:30

6

3,536

by: CrackverbalGMAT

03 Sep 2019, 23:22

ER

What is the value of t^(-1)?

Sub 505 (Easy) | Algebra, Exponents

Sub 505 (Easy) | Algebra, Exponents hide tags

Bunuel

11 Nov 2017, 08:29

2

3

3,536

by: Aussy2000

15 Nov 2017, 00:54

ER

If k and m are positive integers, what is the remainder when k is divi

805+ (Hard) | Remainders

805+ (Hard) | Remainders hide tags

PriyankaPalit7

23 Apr 2019, 00:21

29

1

3,534

by: chetan2u

25 Apr 2019, 00:46

ER

If the quadrilateral PQRS can be completely inscribed in a circle C

705-805 (Hard) | Geometry

705-805 (Hard) | Geometry hide tags

firas92

19 Jun 2019, 07:25

11

3

3,533

by: bumpbot

02 Aug 2023, 22:29

ER

Tank A and Tank B are hollow rectangular solids. Tank A is empty and T

655-705 (Hard) | Geometry

655-705 (Hard) | Geometry hide tags

Bunuel

14 Mar 2018, 02:24

12

5

3,532

by: bumpbot

18 Aug 2022, 03:53

ER

In the rectangular coordinate system are the points A and B equidistan

805+ (Hard) | Coordinate Plane, Geometry

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

niteshwaghray

23 May 2017, 00:56

13

3,532

by: bumpbot

04 Oct 2021, 05:35

ER

If x and y are integers, is x^7 < 6^y ?

555-605 (Medium) | Algebra +2 tags

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

Bunuel

29 Oct 2015, 01:21

7

8

3,532

by: Nunuboy1994

29 May 2017, 23:13

ER

If positive integer n<=3 and n is the number of times a coin is flippe

805+ (Hard) | Probability

805+ (Hard) | Probability hide tags

Bunuel

11 Oct 2016, 02:15

11

3

3,531

by: bumpbot

05 Dec 2025, 21:53

ER

In the XY-plane, lines m and n intersect at the point (−5, 4). What is

505-555 (Easy) | Coordinate Plane

505-555 (Easy) | Coordinate Plane hide tags

Bunuel

07 Nov 2018, 02:11

5

4

3,530

by: bumpbot

27 May 2023, 14:07

ER

What is the value of 1/x + 1/y + 1/z ?

505-555 (Easy) | Algebra

505-555 (Easy) | Algebra hide tags

Bunuel

20 Feb 2018, 23:26

2

4

3,530

by: bumpbot

12 Mar 2023, 12:28

ER

A firm increases its revenues by 10% between 2008 and 2009. The firm’s

555-605 (Medium) | Percent and Interest Problems

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

Bunuel

14 Sep 2015, 22:49

3

5

3,530

by: bumpbot

15 Dec 2022, 04:37

ER

In the figure above, ABC is a right triangle and BCD is a line. What

Sub 505 (Easy) | Geometry

Sub 505 (Easy) | Geometry hide tags

Bunuel

23 May 2020, 08:02

1

3,530

by: BrentGMATPrepNow

23 May 2020, 11:40