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

178

15

79,037

by: thisisakr

16 Apr 2026, 11:46

ER

100 Hardest and easiest questions for DS as of April 2026

1, 2

Bunuel

01 Jan 2026, 05:45

857

24

188,707

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

488,241

by: bb

29 Aug 2025, 13:27

ER

If y ≠ 0 and z ≠ 0, what is the value of x/(yz) ?

555-605 (Medium) | Algebra

555-605 (Medium) | Algebra hide tags

Bunuel

02 Oct 2017, 23:54

2

1

1,502

by: niks18

03 Oct 2017, 03:18

ER

If xy = 3, what is the value of xy(x + y) ?

705-805 (Hard) | Algebra

705-805 (Hard) | Algebra hide tags

Bunuel

02 Oct 2017, 23:56

9

7

3,803

by: bumpbot

17 Sep 2019, 05:54

ER

If a = c*10^b and a and b are integers, what is the value of b?

655-705 (Hard) | Number Properties

655-705 (Hard) | Number Properties hide tags

Bunuel

02 Oct 2017, 23:57

11

9

2,802

by: bumpbot

24 Oct 2023, 05:50

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

4,008

by: bumpbot

21 Dec 2023, 22:28

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If a and b are nonzero integers, what is the value of ab?

705-805 (Hard) | Algebra

705-805 (Hard) | Algebra hide tags

Bunuel

03 Oct 2017, 00:03

3

2

1,918

by: bumpbot

29 Sep 2022, 01:03

ER

If the total weight of d equally weighted objects is 40 pounds, how

705-805 (Hard) | Word Problems

705-805 (Hard) | Word Problems hide tags

Bunuel

03 Oct 2017, 00:03

5

3

2,352

by: mahipal

29 Apr 2019, 05:19

ER

Is r^x < 100?

705-805 (Hard) | Exponents +2 tags

705-805 (Hard) | Exponents, Inequalities, Roots hide tags

Bunuel

03 Oct 2017, 00:05

34

8

4,918

by: bumpbot

22 May 2023, 08:00

ER

If a and b are integers, Is b = 0? (1) a = ab – 1 (2) a is NOT equa

655-705 (Hard) | Algebra

655-705 (Hard) | Algebra hide tags

GMATinsight

03 Oct 2017, 00:35

1

2

1,627

by: Nikkb

03 Oct 2017, 00:52

ER

Is k + k < k?

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Poor Quality hide tags

RockySinha

03 Oct 2017, 11:47

2

1

2,489

by: Bunuel

03 Oct 2017, 11:55

ER

Is cone P similar to cone Q?

655-705 (Hard) | Geometry

655-705 (Hard) | Geometry hide tags

vitorpteixeira

04 Oct 2017, 10:27

6

2

2,656

by: bumpbot

03 Aug 2023, 23:02

ER

ABCD is a quadrilateral as shown in the figure above. Find the area of

505-555 (Easy) | Geometry

505-555 (Easy) | Geometry hide tags

arabella

25 Nov 2018, 11:36

7

5

6,594

by: hkkat

13 Nov 2020, 23:29

ER

Bill and Sally see each other across a field. They are 500 feet apart.

655-705 (Hard) | Distance and Speed Problems

655-705 (Hard) | Distance and Speed Problems hide tags

Bunuel

05 Oct 2017, 04:36

36

18

8,114

by: bumpbot

18 May 2025, 14:48

ER

Sequence X consists of 825 terms, and each term after the first term

Sub 505 (Easy) | Sequences

Sub 505 (Easy) | Sequences hide tags

Bunuel

05 Oct 2017, 04:40

1

7

4,478

by: bumpbot

27 Nov 2020, 05:05

ER

A group consists of Canadians, Americans and Mexicans. If the ratio of

555-605 (Medium) | Fractions and Ratios

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

Bunuel

05 Oct 2017, 04:45

2

4

7,758

by: bumpbot

05 Feb 2019, 23:50

ER

If the product of 7 consecutive integers is not zero, is the product

655-705 (Hard) | Number Properties

655-705 (Hard) | Number Properties hide tags

Bunuel

05 Oct 2017, 04:47

2

6

2,456

by: pra1785

11 Oct 2017, 10:38

ER

Set C is a set of positive integers where 4 is least. If the average

705-805 (Hard) | Statistics and Sets Problems

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

Bunuel

05 Oct 2017, 05:01

4

2,063

by: bumpbot

07 May 2024, 14:07

ER

If n is a positive integer and is not the square of any integer, is it

655-705 (Hard) | Number Properties

655-705 (Hard) | Number Properties hide tags

Bunuel

05 Oct 2017, 05:10

12

3

3,693

by: bumpbot

29 Apr 2024, 02:05

ER

How many elements are there in Set A? 1) Frequency of each element in

605-655 (Medium) | Statistics and Sets Problems

605-655 (Medium) | Statistics and Sets Problems hide tags

GMATinsight

05 Oct 2017, 07:08

2

2,199

by: shuvodip04

18 Mar 2019, 00:00

ER

Set X and set Y have 10 numbers each. Is standard deviation of set X

605-655 (Medium) | Statistics and Sets Problems

605-655 (Medium) | Statistics and Sets Problems hide tags

hkotadiya

05 Oct 2017, 07:40

33

9

14,089

by: bumpbot

13 Apr 2026, 12:03

ER

For integers a, b, and c, a/(b-c) = 1. What is the value of (b-c)/b?

505-555 (Easy) | Algebra +2 tags

505-555 (Easy) | Algebra, Multiples and Factors, Number Properties hide tags

Bunuel

06 Oct 2017, 05:30

33

5

16,268

by: esseeligendi

13 Apr 2026, 19:37

ER

If m is a positive integer, is 13 a factor of m?

555-605 (Medium) | Multiples and Factors

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

Bunuel

06 Oct 2017, 05:49

2

4

1,713

by: atulindia

06 Oct 2017, 10:26

ER

What is the value of y ?

655-705 (Hard) | Algebra

655-705 (Hard) | Algebra hide tags

KGump

07 Oct 2017, 08:50

7

8

3,890

by: iamjatinagrawal

24 Feb 2026, 09:05

ER

Is x > 10?

555-605 (Medium) | Absolute Values, Algebra

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

vitorpteixeira

07 Oct 2017, 11:55

7

5

2,462

by: bumpbot

24 Apr 2019, 03:31

ER

If |2x| > |3y|, is x > y?

655-705 (Hard) | Absolute Values, Inequalities

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

vitorpteixeira

07 Oct 2017, 11:57

18

6

3,751

by: dadaquest

14 Oct 2021, 23:11

ER

What is a–b? (1) a^3 – b^3 = 117 (2) a^2 + ab + b^2 = 39

555-605 (Medium) | Algebra

555-605 (Medium) | Algebra hide tags

Bunuel

08 Oct 2017, 06:32

9

5

4,545

by: bumpbot

04 Jun 2024, 02:28

ER

Is |x| > 10?

605-655 (Medium) | Absolute Values +2 tags

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

chetan2u

08 Oct 2017, 21:06

9

10

2,946

by: bumpbot

02 Jul 2019, 12:34

ER

Is the area of the triangle ABC ≥ 24 ? 1) Two of the Sides of the tri

655-705 (Hard) | Geometry

655-705 (Hard) | Geometry hide tags

GMATinsight

08 Oct 2017, 21:36

1

1,710

by: jedit

08 Oct 2017, 21:56

ER

What is the value of positive integer x?

Sub 505 (Easy) | Multiples and Factors +2 tags

Sub 505 (Easy) | Multiples and Factors, Number Properties, Remainders hide tags

Bunuel

09 Oct 2017, 00:11

1

2

2,913

by: kaulshanx

09 Oct 2017, 10:19

ER

If x is an integer and x > 1, is x equal to 13?

505-555 (Easy) | Multiples and Factors

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

nkmungila

10 Oct 2017, 00:17

1

2,419

by: Bunuel

10 Oct 2017, 00:22

ER

If x + y = 7, what is the value of xy(x – y)?

805+ (Hard) | Algebra

805+ (Hard) | Algebra hide tags

Bunuel

10 Oct 2017, 00:36

11

7

4,713

by: chetan2u

23 May 2023, 10:42

ER

If a, b, and c are positive integers, is b = ac^(-1/2)

605-655 (Medium) | Algebra, Roots

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

Bunuel

10 Oct 2017, 00:44

9

7

4,496

by: bumpbot

23 Jun 2023, 23:31

ER

If xy = 7, what is xy(x + y)^2 ?

605-655 (Medium) | Algebra

605-655 (Medium) | Algebra hide tags

Bunuel

10 Oct 2017, 00:50

12

7

4,410

by: GMATGuruNY

20 Aug 2022, 20:55

ER

If xy = z, what is the value of x ? (1) y = 2z (2) z < -1

655-705 (Hard) | Algebra

655-705 (Hard) | Algebra hide tags

Bunuel

10 Oct 2017, 00:52

8

4

2,657

by: chetan2u

04 Nov 2022, 19:46

ER

What is the value of |x - y|?

655-705 (Hard) | Algebra

655-705 (Hard) | Algebra hide tags

Bunuel

10 Oct 2017, 00:55

3

2,204

by: shushman14

11 Oct 2017, 13:53

ER

If x 0, what is the value of x?

655-705 (Hard) | Absolute Values, Exponents

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

Bunuel

10 Oct 2017, 01:06

12

9

5,733

by: Bunuel

08 Nov 2021, 08:13

ER

If xy = z, what is the value of x ? (1) y =2z (2) y^2 = 4

705-805 (Hard) | Algebra

705-805 (Hard) | Algebra hide tags

Bunuel

10 Oct 2017, 01:07

11

7

3,166

by: bumpbot

17 Mar 2025, 07:20

ER

If r and s are nonzero integers, is r/s an integer ?

805+ (Hard) | Algebra, Number Properties

805+ (Hard) | Algebra, Number Properties hide tags

Bunuel

10 Oct 2017, 01:16

14

3

3,750

by: bumpbot

07 Aug 2023, 03:14

ER

3,5,10,7,x. If x is an integer , is the mean of the five numbers

805+ (Hard) | Statistics and Sets Problems

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

nkmungila

10 Oct 2017, 23:24

20

8

8,027

by: bumpbot

05 Sep 2023, 07:17

ER

We have a condition that a < b < c. What is the solution of a^2 + b^2

Poor Quality

Poor Quality hide tags

MathRevolution

11 Oct 2017, 06:43

3

1,174

by: MathRevolution

15 Oct 2017, 06:10

ER

Of the students who attend a library, each student either likes

555-605 (Medium) | Statistics and Sets Problems

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

nkmungila

11 Oct 2017, 21:58

4

1

5,045

by: Bunuel

11 Oct 2017, 22:03

ER

If n is a positive integer and p = 3.021 × 10n, what is the value of n

655-705 (Hard) | Exponents, Inequalities

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

Bunuel

12 Oct 2017, 04:09

7

3

2,161

by: Bunuel

15 Jul 2018, 00:43

ER

If rs ≠ 0, is t an integer? (1) t = 3r – 2s (2) r = s

505-555 (Easy) | Number Properties

505-555 (Easy) | Number Properties hide tags

Bunuel

12 Oct 2017, 04:15

1

4

2,084

by: bumpbot

08 Aug 2024, 09:26

ER

Is the positive integer x a prime number? (1) x is even (2) 2 < x < 19

505-555 (Easy) | Number Properties

505-555 (Easy) | Number Properties hide tags

Bunuel

12 Oct 2017, 04:16

5

2,361

by: KSBGC

10 Jun 2018, 19:44

ER

If x is a positive integer, what is the remainder when x is divided by

605-655 (Medium) | Remainders

605-655 (Medium) | Remainders hide tags

tuanh135

12 Oct 2017, 08:29

30

11

14,537

by: bumpbot

26 Apr 2024, 21:46

ER

If A and B are different points on graph x^2 + y^2 = 25 then what is

655-705 (Hard) | Coordinate Plane

655-705 (Hard) | Coordinate Plane hide tags

GMATinsight

12 Oct 2017, 10:57

8

2

2,010

by: bumpbot

09 Dec 2019, 00:56

ER

A certain highway has exits A, B, C, and D in that order. What is the

505-555 (Easy) | Arithmetic

505-555 (Easy) | Arithmetic hide tags

Bunuel

12 Oct 2017, 23:16

2

5

3,914

by: bumpbot

08 Jul 2021, 03:48

ER

What is the value of x? (1) x^6 = 729 (2) x^5 < x^4

505-555 (Easy) | Inequalities

505-555 (Easy) | Inequalities hide tags

Bunuel

12 Oct 2017, 23:21

3

4

2,826

by: JeffTargetTestPrep

27 Nov 2017, 19:13

ER

Hoses A, B, and C pump a swimming pool full of water. Hoses A and B

705-805 (Hard) | Work and Rate Problems

705-805 (Hard) | Work and Rate Problems hide tags

aashaybaindurgmat

14 Oct 2017, 01:20

57

7

11,341

by: bumpbot

14 Mar 2026, 00:49

ER

If a and b are integers and a is even, what is the value of a - b?

555-605 (Medium) | Number Properties

555-605 (Medium) | Number Properties hide tags

aashaybaindurgmat

15 Oct 2017, 01:37

7

6

7,692

by: bumpbot

15 Sep 2024, 21:51

ER

Did John go to the beach yesterday? (1) If John goes to the beach, he

605-655 (Medium) | Word Problems

605-655 (Medium) | Word Problems hide tags

Bunuel

16 Oct 2017, 01:44

6

7

4,707

by: bumpbot

20 Sep 2025, 04:48