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

79,477

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

858

24

188,944

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

488,623

by: bb

29 Aug 2025, 13:27

The temperature was measured once daily for 400 days. On 76% of these

805+ (Hard) | Arithmetic, Statistics and Sets Problems

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

natmyrrha

23 Jun 2019, 02:08

26

4

4,011

by: bumpbot

04 Jul 2022, 17:16

ER

Charles has 3 different types of bonds: A, B and C. Value of

555-605 (Medium) | Arithmetic, Mixture Problems

555-605 (Medium) | Arithmetic, Mixture Problems hide tags

amanvermagmat

06 Dec 2018, 01:58

13

2

4,011

by: SatvikVedala

10 Mar 2023, 22:41

ER

Company X employs more than 5 people, and will choose 2 employees at

805+ (Hard) | Probability

805+ (Hard) | Probability hide tags

Bunuel

31 Dec 2019, 11:11

15

6

4,011

by: bumpbot

02 Jun 2025, 09:45

ER

Is p + q = 0 ?

805+ (Hard) | Algebra

805+ (Hard) | Algebra hide tags

Asifpirlo

09 Aug 2013, 02:51

17

6

4,011

by: bumpbot

25 Jan 2026, 00:22

ER

What is the length of the line AD? (1) AC = 10, BD=15 (2) AB/BC=BC/CD

655-705 (Hard) | Fractions and Ratios

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

Bunuel

17 Oct 2018, 00:38

9

2

4,012

by: CEdward

21 Mar 2021, 16:54

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If a and b are positive integers, is the product ab odd?

Sub 505 (Easy) | Number Properties

Sub 505 (Easy) | Number Properties hide tags

Bunuel

17 Apr 2017, 23:31

4

7

4,013

by: bumpbot

10 Dec 2020, 20:51

ER

A jeweler sold a watch at a profit. Was his percent profit on the sal

705-805 (Hard) | Word Problems

705-805 (Hard) | Word Problems hide tags

Bunuel

31 Jul 2020, 00:55

21

7

4,014

by: bumpbot

03 Sep 2025, 11:59

ER

What is the value of (x - 1)(y + 1) ? (1) x + y = 4 (2) xy = 3

605-655 (Medium) | Algebra

605-655 (Medium) | Algebra hide tags

Bunuel

06 Jul 2018, 00:15

3

6

4,014

by: bumpbot

25 Dec 2025, 21:59

ER

If a and b are integers, is b > a?

655-705 (Hard) | Algebra

655-705 (Hard) | Algebra hide tags

Bunuel

21 Jan 2021, 01:15

12

7

4,015

by: bumpbot

20 Mar 2024, 23:49

ER

Will a company lose sales if its strategy focuses on consumer

505-555 (Easy) | Non-Math Related

505-555 (Easy) | Non-Math Related hide tags

guddo

14 Aug 2024, 02:43

5

4,015

by: Blackcrow1972

17 Nov 2024, 07:46

ER

What digit does d represent in the decimal 0.d64?

505-555 (Easy) | Fractions and Ratios

505-555 (Easy) | Fractions and Ratios hide tags

Bunuel

01 Nov 2015, 09:17

4

4,016

by: bumpbot

15 Apr 2023, 22:19

ER

Is x > y?

555-605 (Medium) | Absolute Values

555-605 (Medium) | Absolute Values hide tags

mojorising800

05 Jul 2011, 02:46

7

4

4,016

by: bumpbot

28 Jul 2025, 06:48

ER

The marks scored by 50 students of a class are m1, m2, m3 …m50 where m

655-705 (Hard) | Arithmetic, Statistics and Sets Problems

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

raj44

12 Dec 2014, 07:43

12

3

4,016

by: bumpbot

28 Jan 2026, 03:18

ER

In a class, each of the students were asked to pick an integ

Poor Quality

Poor Quality hide tags

tabsang

25 Dec 2012, 01:59

2

4,018

by: tabsang

25 Dec 2012, 05:43

ER

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

705-805 (Hard) | Absolute Values, Inequalities

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

Bunuel

09 Mar 2016, 13:32

6

4,018

by: HoudaSR

16 Jun 2023, 15:31

ER

Is there a route from A to C that passes through B and is more than 8

505-555 (Easy) | Geometry

505-555 (Easy) | Geometry hide tags

Bunuel

24 Oct 2017, 23:51

1

3

4,018

by: bumpbot

05 Nov 2023, 01:46

ER

A man, while driving on a highway at uniform speed, observes his car’s

705-805 (Hard) | Distance and Speed Problems

705-805 (Hard) | Distance and Speed Problems hide tags

Bunuel

06 Jul 2017, 02:36

15

6

4,018

by: bumpbot

14 Apr 2026, 02:46

ER

Is x < y ? (1) z + 1 < y (2) z > x

505-555 (Easy) | Inequalities

505-555 (Easy) | Inequalities hide tags

Bunuel

30 Jan 2017, 10:49

6

3

4,019

by: MHIKER

22 Sep 2020, 13:05

ER

Is n an integer? (1) n/3 is an integer (2) 2n is an integer

Sub 505 (Easy) | Number Properties

Sub 505 (Easy) | Number Properties hide tags

TheGmatTutor

22 Jun 2010, 16:16

2

4,019

by: surah

30 Oct 2023, 22:08

ER

What is the value of x^6/(x^2+1)?

655-705 (Hard) | Absolute Values, Algebra

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

Bunuel

02 Oct 2017, 23:59

10

6

4,019

by: bumpbot

21 Dec 2023, 22:28

ER

If x is not = to 0, what is the value of (x^m/x^n)^5?

555-605 (Medium) | Algebra, Exponents

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

Carcass

26 Feb 2013, 16:14

11

5

4,020

by: bumpbot

28 Aug 2023, 07:52

ER

Is q negative?

Sub 505 (Easy) | Inequalities

Sub 505 (Easy) | Inequalities hide tags

Bunuel

21 Feb 2016, 13:46

4

3

4,021

by: bumpbot

11 Dec 2019, 18:00

ER

If a < b, is a < c?

555-605 (Medium) | Arithmetic, Number Properties

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

EMPOWERgmatRichC

22 Oct 2019, 23:17

5

4,023

by: bumpbot

26 Jul 2025, 05:22

ER

If n and x are positive integers, what is the least common multiple of

605-655 (Medium) | Exponents +2 tags

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

Bunuel

28 Apr 2016, 03:33

13

3

4,023

by: bumpbot

02 Jan 2026, 02:45

ER

If 2b – a^2 = 18, what is the value of b?

Sub 505 (Easy) | Algebra

Sub 505 (Easy) | Algebra hide tags

Bunuel

24 Oct 2019, 00:57

3

2

4,024

by: bumpbot

01 Apr 2021, 08:52

ER

Is -1 < x < 2 ? (1) 0 < x < 4 (2) -2 < x < 3

505-555 (Easy) | Inequalities

505-555 (Easy) | Inequalities hide tags

Bunuel

23 May 2020, 04:32

6

5

4,024

by: bumpbot

27 Jan 2023, 04:14

ER

If x is less than 80 percent of y, is x less than 100 ? (1)

655-705 (Hard) | Inequalities, Percent and Interest Problems

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

rxs0005

22 Jan 2011, 07:08

10

3

4,024

by: bumpbot

06 Jan 2026, 22:40

ER

What is the minimum value of the function g(y)?

555-605 (Medium) | Functions and Custom Characters

555-605 (Medium) | Functions and Custom Characters hide tags

susheelh

25 Oct 2017, 07:23

4

3

4,027

by: sb995

14 May 2025, 11:35

ER

If |x – 3| = 5, what is the value of x?

Sub 505 (Easy) | Absolute Values

Sub 505 (Easy) | Absolute Values hide tags

Bunuel

03 Nov 2016, 02:22

6

11

4,028

by: bumpbot

04 Jul 2019, 05:01

ER

If both x and y are integers, is (x^2 − y^2)^(1/2) an integer?

555-605 (Medium) | Algebra

555-605 (Medium) | Algebra hide tags

Bunuel

11 Jul 2019, 05:24

3

5

4,028

by: bumpbot

07 May 2020, 07:47

ER

If y = x^2+bx+c which has two real roots, Find the value of b+c? 1) S

555-605 (Medium) | Algebra +2 tags

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

GMATinsight

01 Apr 2020, 21:47

14

4

4,028

by: tsraeroshad

01 Jun 2023, 08:32

ER

Sn=S(n-2) + 11, is 633 a term of the sequence?

705-805 (Hard) | Sequences

705-805 (Hard) | Sequences hide tags

bakshiaashna

07 Nov 2020, 14:29

13

3

4,028

by: bumpbot

21 Dec 2025, 23:17

ER

Is x > y ? (1) x + y < 0 (2) x + |y| < -1

655-705 (Hard) | Absolute Values, Inequalities

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

Bunuel

19 Dec 2019, 03:58

15

4

4,029

by: bumpbot

31 Dec 2023, 03:59

ER

In the figure above, line P is crossed by six other lines. Does x = y

Sub 505 (Easy) | Geometry

Sub 505 (Easy) | Geometry hide tags

Bunuel

23 May 2020, 05:53

5

2

4,029

by: bumpbot

10 Jan 2024, 11:59

ER

Is the value of x^2 + xy equal to 0?

Sub 505 (Easy) | Algebra

Sub 505 (Easy) | Algebra hide tags

GMATBusters

31 Oct 2018, 22:00

2

3

4,030

by: bumpbot

14 Jun 2022, 09:11

ER

If only people who paid deposits attended the Rose Seminar, how many

Sub 505 (Easy) | Percent and Interest Problems, Word Problems

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

Bunuel

29 Dec 2020, 23:04

1

3

4,030

by: bumpbot

24 Jan 2024, 17:57

ER

For a positive integer n, is n divisible by 6? (1) n = m3 - m, for any

555-605 (Medium) | Multiples and Factors

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

siddharthkapoor

13 Jul 2020, 01:05

9

7

4,032

by: bumpbot

31 Mar 2022, 10:25

ER

If x and y are integers, what is the value of (2^x)^y (1) 2^x + 2^y =

555-605 (Medium) | Exponents

555-605 (Medium) | Exponents hide tags

Bunuel

16 Dec 2019, 02:55

1

3

4,033

by: Archit3110

16 Dec 2019, 04:23

ER

What is the value of x?

605-655 (Medium) | Algebra

605-655 (Medium) | Algebra hide tags

Bunuel

14 Apr 2015, 05:04

6

10

4,033

by: bumpbot

06 Oct 2023, 02:37

ER

If xyz ≠ 0. what is the value of x/y^2 ?

505-555 (Easy) | Algebra

505-555 (Easy) | Algebra hide tags

Bunuel

29 Dec 2021, 08:30

2

5

4,033

by: bumpbot

11 Jun 2025, 20:34

ER

In a class of 160 students, the number of students studying German

705-805 (Hard) | Overlapping Sets

705-805 (Hard) | Overlapping Sets hide tags

Turkish

17 Apr 2016, 18:08

8

5

4,034

by: bumpbot

29 Mar 2025, 10:53

ER

Is quadrilateral ABCD a square? (1) ABCD is a rectangle whose diagona

655-705 (Hard) | Geometry

655-705 (Hard) | Geometry hide tags

Bunuel

26 May 2021, 04:30

8

4

4,035

by: CrackverbalGMAT

21 Aug 2021, 18:39

ER

Lily has only red and blue balls in a jar. If she removes three balls

805+ (Hard) | Probability

805+ (Hard) | Probability hide tags

Bunuel

19 Oct 2022, 02:33

10

4

4,035

by: bumpbot

17 Jul 2025, 02:11

ER

What is the units digit of integer n?

555-605 (Medium) | Fractions and Ratios, Number Properties

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

Bunuel

26 Apr 2016, 00:59

2

6

4,036

by: SaGa

03 Mar 2018, 01:30

ER

What is the value of p? (1) 4|q^2 - 1| = p - 5 (2) |7 - p| = 6

655-705 (Hard) | Absolute Values

655-705 (Hard) | Absolute Values hide tags

Bunuel

15 Jun 2020, 02:02

14

11

4,036

by: bumpbot

31 Oct 2023, 07:38

ER

Is x > 3 ?

555-605 (Medium) | Inequalities

555-605 (Medium) | Inequalities hide tags

zest4mba

02 Sep 2010, 08:13

4

6

4,037

by: bumpbot

25 Jan 2020, 08:34

ER

What is the value of x[square_root] 3[/square_root]

555-605 (Medium) | Exponents, Roots

555-605 (Medium) | Exponents, Roots hide tags

AkshdeepS

28 Mar 2019, 22:19

8

4

4,037

by: bumpbot

25 Jun 2023, 01:57

ER

Of the 60 girls at a summer camp, 75 percent chose to learn rowing

655-705 (Hard) | Overlapping Sets

655-705 (Hard) | Overlapping Sets hide tags

MT1302

21 Mar 2024, 08:38

15

5

4,037

by: bumpbot

10 Oct 2025, 01:25

ER

What is the least possible common multiple of positive integers x and

555-605 (Medium) | Multiples and Factors

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

Bunuel

15 Dec 2016, 04:42

8

4

4,038

by: RakshitaR

28 Mar 2025, 02:33

ER

X is a three-digit number whose hundredth digit, tens digit, and units

805+ (Hard) | Number Properties

805+ (Hard) | Number Properties hide tags

AR15J

10 Jul 2018, 21:24

8

3

4,039

by: bumpbot

09 Aug 2022, 12:07