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

79,038

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 f is the function defined by f(x) = 2x for x ≥ 0 and f(x) = x^2 for

555-605 (Medium) | Functions and Custom Characters

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

Bunuel

07 Nov 2017, 23:59

6

4

6,796

by: bumpbot

12 Oct 2025, 23:59

ER

Is 12 a factor of the positive integer n?

555-605 (Medium) | Multiples and Factors

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

Bunuel

08 Nov 2017, 00:02

18

6

8,025

by: bumpbot

13 Apr 2024, 01:42

ER

P(A) and P(B) are the probabilities of independent events A and B, re

555-605 (Medium) | Probability

555-605 (Medium) | Probability hide tags

MathRevolution

09 Nov 2017, 01:01

13

4

5,974

by: HarshavardhanR

09 Feb 2026, 21:12

ER

Is xy > 0 ? (1) |x| + y = |x + y| (2) x + |y| = |x + y|

705-805 (Hard) | Absolute Values

705-805 (Hard) | Absolute Values hide tags

chetan2u

09 Nov 2017, 19:57

9

3

2,764

by: niks18

11 Nov 2017, 21:23

ER

If f(x+y) = f(x)f(y), what is the value of f(0)? 1) f(x) > 0 2) f(x) h

705-805 (Hard) | Functions and Custom Characters

705-805 (Hard) | Functions and Custom Characters hide tags

MathRevolution

10 Nov 2017, 00:50

20

5

8,432

by: bumpbot

25 Sep 2025, 22:40

ER

If the number of members in the club C is 100, what is the value of x?

655-705 (Hard) | Statistics and Sets Problems

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

sunny91

11 Nov 2017, 05:31

6

4

3,178

by: bumpbot

04 Aug 2022, 17:41

ER

If r = (x+y)/2 and s = (x-y)/2, what is the value of r + s?

505-555 (Easy) | Algebra

505-555 (Easy) | Algebra hide tags

Bunuel

11 Nov 2017, 07:39

4

2

2,536

by: bumpbot

18 Apr 2022, 10:03

ER

On a given day, 50 people took a test that is designed to measure a ca

Sub 505 (Easy) | Word Problems

Sub 505 (Easy) | Word Problems hide tags

Bunuel

10 Aug 2025, 03:01

3

2

6,190

by: bumpbot

14 Jun 2024, 08:19

ER

Is -7 < y < 10 ? (1) y > -6 (2) y < 0

505-555 (Easy) | Inequalities

505-555 (Easy) | Inequalities hide tags

Bunuel

11 Nov 2017, 07:55

5

2,087

by: niks18

12 Nov 2017, 11:57

ER

If x and y are integers, what is the value of 2x^(6y) - 4?

555-605 (Medium) | Algebra, Exponents

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

Bunuel

11 Nov 2017, 08:01

3

4

4,171

by: MathRevolution

18 Nov 2017, 16:33

ER

If n is a positive integer, what is the value of n ?

555-605 (Medium) | Remainders

555-605 (Medium) | Remainders hide tags

Bunuel

11 Nov 2017, 08:23

3

6,951

by: bumpbot

25 May 2023, 23:29

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

3,532

by: Aussy2000

15 Nov 2017, 00:54

ER

Was the average (arithmetic mean) weight of the package mailed at a

555-605 (Medium) | Word Problems

555-605 (Medium) | Word Problems hide tags

Bunuel

11 Nov 2017, 08:45

3

5,633

by: bumpbot

23 May 2024, 02:58

ER

Is t greater than v ? (1) t is greater than 3. (2) v is less than 5.

Sub 505 (Easy) | Inequalities

Sub 505 (Easy) | Inequalities hide tags

Bunuel

11 Nov 2017, 08:50

1

1,765

by: Sasindran

11 Nov 2017, 08:54

ER

Linda purchased 3 books at a book fair. What was the median price of

555-605 (Medium) | Word Problems

555-605 (Medium) | Word Problems hide tags

Bunuel

11 Nov 2017, 09:12

9

3

4,729

by: egmat

19 Feb 2026, 05:17

ER

If R, S, and T are numbers on the number line, not necessarily in that

Sub 505 (Easy) | Geometry

Sub 505 (Easy) | Geometry hide tags

Bunuel

11 Nov 2017, 09:25

2

3,121

by: Sasindran

11 Nov 2017, 09:30

ER

Is y^2 = 0?

Sub 505 (Easy) | Algebra

Sub 505 (Easy) | Algebra hide tags

Bunuel

11 Nov 2017, 09:34

1

2

3,041

by: bumpbot

23 Apr 2022, 09:46

ER

What is the value of the product xy?

505-555 (Easy) | Algebra

505-555 (Easy) | Algebra hide tags

Bunuel

11 Nov 2017, 09:35

2

1

3,712

by: Sasindran

11 Nov 2017, 09:44

ER

If x ≠ y, is x + y = xy?

555-605 (Medium) | Algebra

555-605 (Medium) | Algebra hide tags

Bunuel

11 Nov 2017, 09:39

9

5

7,454

by: bumpbot

23 Apr 2022, 05:56

ER

If xy ≠ 0, what is the value of 1/x + 1/y ?

555-605 (Medium) | Algebra

555-605 (Medium) | Algebra hide tags

Bunuel

11 Nov 2017, 09:42

3

4

5,300

by: bumpbot

12 Apr 2022, 12:12

ER

Is a/b>0?

555-605 (Medium) | Absolute Values +2 tags

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

chetan2u

11 Nov 2017, 10:19

8

13

3,102

by: bumpbot

20 Nov 2019, 07:17

ER

A firm has at least 5 partners, of whom at least 2 are male and at

805+ (Hard) | Combinations, Probability

805+ (Hard) | Combinations, Probability hide tags

RonPurewal

12 Nov 2017, 09:27

33

14

5,890

by: bumpbot

02 Jun 2025, 10:11

ER

If p, q and r are integers, and pq + r is an odd integer, is p an even

805+ (Hard) | Number Properties

805+ (Hard) | Number Properties hide tags

ashikaverma13

12 Nov 2017, 11:35

115

9

17,805

by: bumpbot

19 Oct 2024, 03:13

ER

What is the remainder when the sum of the positive integers x and y is

Sub 505 (Easy) | Remainders

Sub 505 (Easy) | Remainders hide tags

Bunuel

12 Nov 2017, 23:37

8

3

7,218

by: bumpbot

25 Apr 2022, 04:59

ER

When 15n where n is a positive integer, is divided by 6, the remainder

555-605 (Medium) | Remainders

555-605 (Medium) | Remainders hide tags

Bunuel

12 Nov 2017, 23:40

1

4

4,253

by: bumpbot

25 Apr 2022, 00:43

ER

If the average (arithmetic mean) of 5 different numbers is 12, what is

605-655 (Medium) | Statistics and Sets Problems

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

Bunuel

12 Nov 2017, 23:49

12

4

11,099

by: bumpbot

24 Nov 2025, 12:41

ER

Is quadrilateral ABCD a square? (1) AB = BC = CD = DA (2) x + y = 180

555-605 (Medium) | Geometry

555-605 (Medium) | Geometry hide tags

Bunuel

13 Nov 2017, 00:12

12

6

10,076

by: bumpbot

16 Apr 2022, 00:07

ER

How many different factors does the integer n have?

555-605 (Medium) | Multiples and Factors, Number Properties

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

Bunuel

13 Nov 2017, 00:19

6

3

2,458

by: bumpbot

24 Jun 2023, 07:24

ER

If four of the five integers in a list are 10, 2, 8, and 5 what is the

Sub 505 (Easy) | Number Properties

Sub 505 (Easy) | Number Properties hide tags

Bunuel

13 Nov 2017, 00:21

2

2,426

by: Gmatstudent2018

26 Nov 2019, 20:18

ER

In ΔPQR above what is the value of y? (1) (3/2)x = 120 (2) x + y = 100

555-605 (Medium) | Geometry

555-605 (Medium) | Geometry hide tags

Bunuel

13 Nov 2017, 00:26

1

6

3,102

by: PK32

16 Nov 2017, 11:08

ER

Each week Connie receives a base salary of $500, plus a 20 percent com

Sub 505 (Easy) | Word Problems

Sub 505 (Easy) | Word Problems hide tags

Bunuel

13 Nov 2017, 00:30

2

1

6,601

by: Alexey1989x

13 Nov 2017, 00:38

ER

In the x-y plane y=p(x)=ax^2+bx+c pass through (-1,0) and

655-705 (Hard) | Functions and Custom Characters

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

MathRevolution

13 Nov 2017, 01:11

5

3

3,287

by: lalgur1

10 Nov 2025, 03:53

ER

If every car sold last week at a certain used-car dealership was eithe

Sub 505 (Easy) | Word Problems

Sub 505 (Easy) | Word Problems hide tags

Bunuel

13 Nov 2017, 02:21

1

2

5,155

by: bumpbot

01 Sep 2020, 08:26

ER

Is x > 5 ? (1) x^2 > 25 (2) 2x + 7 > 0

555-605 (Medium) | Inequalities

555-605 (Medium) | Inequalities hide tags

Bunuel

13 Nov 2017, 02:23

4

9

5,696

by: sanjayparihar16

04 Dec 2020, 12:42

ER

Is x+y divisible by 2? 1) There are 25 integers between x and y 2) x

555-605 (Medium) | Multiples and Factors, Number Properties

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

GMATinsight

14 Nov 2017, 02:36

2

1,540

by: amanvermagmat

14 Nov 2017, 08:48

ER

If x>y and y is a positive integer, is y even?

705-805 (Hard) | Number Properties

705-805 (Hard) | Number Properties hide tags

chetan2u

14 Nov 2017, 07:46

5

2

1,422

by: akshayk

14 Nov 2017, 08:37

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

12,026

by: bumpbot

27 Sep 2025, 08:52

ER

If p, r, s, and t are nonzero integers, is p/r = s/t ?

505-555 (Easy) | Algebra

505-555 (Easy) | Algebra hide tags

Bunuel

15 Nov 2017, 08:48

1

2

3,190

by: BrentGMATPrepNow

15 Nov 2017, 09:33

ER

Of the students in a certain school, 15 percent are enrolled in an art

555-605 (Medium) | Overlapping Sets

555-605 (Medium) | Overlapping Sets hide tags

Bunuel

15 Nov 2017, 09:25

6

4

8,751

by: bumpbot

07 Apr 2022, 06:37

ER

If x is an integer, is 3x + 7 even?

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

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

Bunuel

15 Nov 2017, 09:44

1

5

4,046

by: MathRevolution

16 Nov 2017, 23:18

ER

What is the value of p+q?

Sub 505 (Easy) | Algebra

Sub 505 (Easy) | Algebra hide tags

pushpitkc

15 Nov 2017, 11:03

10

5

9,880

by: bumpbot

05 Aug 2025, 10:20

ER

What is the average salary at Company A?

555-605 (Medium) | Word Problems

555-605 (Medium) | Word Problems hide tags

Bunuel

16 Nov 2017, 01:33

15

5

6,891

by: bumpbot

23 Sep 2025, 05:20

ER

If there are x students in a class and x>90, what is x?

555-605 (Medium) | Multiples and Factors, Number Properties

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

chetan2u

16 Nov 2017, 09:32

1

2

1,717

by: chetan2u

27 Nov 2017, 18:50

ER

Is p > q? (1) p/q = 8/7 (2) p^2 > q^2

605-655 (Medium) | Algebra

605-655 (Medium) | Algebra hide tags

talismaaniac

17 Nov 2017, 07:56

27

4

12,228

by: bumpbot

11 Nov 2025, 13:13

ER

Is p=6? (2) p^2 = 6p (2) p = even

555-605 (Medium) | Algebra

555-605 (Medium) | Algebra hide tags

talismaaniac

17 Nov 2017, 07:54

15

6

11,177

by: bumpbot

21 Nov 2024, 19:43

ER

Is x = y? (1) x^2 = xy (2) x^2 = y^2

605-655 (Medium) | Algebra

605-655 (Medium) | Algebra hide tags

talismaaniac

17 Nov 2017, 08:00

8

3

2,111

by: bumpbot

22 Aug 2022, 05:57

ER

If x and y are integers, is |xy|/y>0?

805+ (Hard) | Absolute Values, Inequalities

805+ (Hard) | Absolute Values, Inequalities hide tags

chetan2u

17 Nov 2017, 09:29

21

4

3,765

by: bumpbot

18 Jan 2024, 00:32

ER

If the Perimeter of Quadrilateral ABCD is P then find P? 1) The maxim

655-705 (Hard) | Geometry

655-705 (Hard) | Geometry hide tags

GMATinsight

18 Nov 2017, 05:33

5

2

2,526

by: amanvermagmat

27 Nov 2017, 23:34

ER

(n-x)+(n-y)+(n-z)+(n-k) What is the value of the expression above?

505-555 (Easy) | Number Properties

505-555 (Easy) | Number Properties hide tags

Bunuel

19 Nov 2017, 09:15

31

4

15,160

by: akshayk

21 Nov 2017, 12:17

ER

If the length of a certain rectangle is 2 greater than the width of

505-555 (Easy) | Geometry

505-555 (Easy) | Geometry hide tags

Bunuel

19 Nov 2017, 09:20

10

3

7,888

by: bumpbot

17 Jan 2024, 06:18