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

79,579

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

858

24

188,960

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

488,641

by: bb

29 Aug 2025, 13:27

ER

If x and y are integers, is y an odd integer?

655-705 (Hard) | Number Properties

655-705 (Hard) | Number Properties hide tags

Bunuel

01 Oct 2018, 04:29

6

2

2,452

by: harsha3699

01 Oct 2018, 04:49

ER

If a and b are integers, what is the value of (8a^6b − 2)?

555-605 (Medium) | Exponents

555-605 (Medium) | Exponents hide tags

Bunuel

01 Oct 2018, 04:33

1

1,796

by: GMATinsight

01 Oct 2018, 04:45

ER

If x and y are positive integers and 18 is a multiple of x*y^2, what

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

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

Bunuel

01 Oct 2018, 04:35

5

2

3,424

by: GMATWhizTeam

15 Feb 2020, 01:14

ER

If x and y are non-zero integers, what is the value of (x^2y 1) ?

805+ (Hard) | Absolute Values, Exponents

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

Bunuel

01 Oct 2018, 04:43

12

8

3,248

by: Bunuel

18 Mar 2023, 11:56

ER

If x and y are positive integers and r is the remainder when (7^(4x+3)

555-605 (Medium) | Exponents, Remainders

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

Bunuel

01 Oct 2018, 04:47

3

2,434

by: TestPrepUnlimited

15 Oct 2019, 14:33

ER

If x and y are positive integers, what is the value of y?

505-555 (Easy) | Number Properties

505-555 (Easy) | Number Properties hide tags

Bunuel

01 Oct 2018, 04:48

2

1,848

by: BrentGMATPrepNow

01 Oct 2018, 10:41

ER

If x and y are positive integers, what is the value of x?

605-655 (Medium) | Algebra, Exponents

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

Bunuel

01 Oct 2018, 04:50

1

1,629

by: harsha3699

01 Oct 2018, 04:59

ER

If x and y are distinct positive integers, is |x − y| a factor of 12?

805+ (Hard) | Absolute Values, Multiples and Factors

805+ (Hard) | Absolute Values, Multiples and Factors hide tags

Bunuel

01 Oct 2018, 04:51

21

8

3,579

by: bumpbot

04 Aug 2023, 00:46

ER

If x and z are positive integers, is at least one of them a prime numb

705-805 (Hard) | Algebra, Number Properties

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

Bunuel

01 Oct 2018, 04:53

9

3

1,853

by: harsha3699

01 Oct 2018, 23:28

ER

If x is a positive integer, does the remainder, when (7^x + 1) is divi

555-605 (Medium) | Exponents, Remainders

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

Bunuel

01 Oct 2018, 04:55

11

3

3,418

by: auradediligodo

13 Oct 2019, 12:13

ER

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

605-655 (Medium) | Number Properties

605-655 (Medium) | Number Properties hide tags

Bunuel

01 Oct 2018, 04:55

5

7

2,584

by: CrackverbalGMAT

01 Apr 2020, 00:14

ER

Two consecutive positive integers are divided by 25. What is the sum

805+ (Hard) | Remainders

805+ (Hard) | Remainders hide tags

pushpitkc

01 Oct 2018, 06:38

22

3

4,728

by: bumpbot

21 Jan 2026, 01:49

ER

If a>b>0

Poor Quality

Poor Quality hide tags

rheabiswal

01 Oct 2018, 21:38

1

6

1,855

by: rheabiswal

02 Oct 2018, 07:05

ER

In a certain sequence, term a_n can be found using the formula

805+ (Hard) | Sequences

805+ (Hard) | Sequences hide tags

rheabiswal

06 Oct 2018, 03:04

33

8

5,044

by: bumpbot

18 Sep 2023, 15:57

ER

The average height of the girls in a certain class is 160cm and averag

605-655 (Medium) | Algebra, Statistics and Sets Problems

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

Bunuel

02 Oct 2018, 02:33

5

1

4,420

by: pushpitkc

24 Jan 2021, 02:05

ER

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

Sub 505 (Easy) | Algebra

Sub 505 (Easy) | Algebra hide tags

taniad

02 Oct 2018, 04:23

2

4,453

by: BrentGMATPrepNow

27 Jul 2019, 07:19

ER

If p and q are integers, is p^q >1 ? (1) pq < 0 (2) q^p < 1

655-705 (Hard) | Exponents, Inequalities

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

push12345

02 Oct 2018, 06:07

24

6

7,558

by: bumpbot

26 Jun 2025, 22:22

ER

If y < 0 < x, is x/y > -1?

705-805 (Hard) | Inequalities

705-805 (Hard) | Inequalities hide tags

BrentGMATPrepNow

02 Oct 2018, 14:48

10

2,908

by: bumpbot

02 Jul 2020, 00:14

If x is a decimal, What is the hundredths digit of x?

655-705 (Hard) | Number Properties

655-705 (Hard) | Number Properties hide tags

Abhi077

03 Oct 2018, 02:56

2

6

2,214

by: bumpbot

18 Jan 2026, 00:22

ER

Is (x + y)^(1/2) an integer? (1) x^3 = 64 (2) x^2 = y – 3

Sub 505 (Easy) | Number Properties

Sub 505 (Easy) | Number Properties hide tags

HariS1992

03 Oct 2018, 00:10

18

8

9,610

by: bumpbot

05 Apr 2025, 23:43

ER

By what percent was the price of a certain candy bar increased?

Sub 505 (Easy) | Percent and Interest Problems

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

Bunuel

03 Oct 2018, 00:41

5

15,338

by: bumpbot

05 Jan 2026, 00:19

ER

If x and y are positive what is the value of x?

Sub 505 (Easy) | Algebra

Sub 505 (Easy) | Algebra hide tags

Bunuel

03 Oct 2018, 01:39

4

6

9,726

by: bumpbot

11 Aug 2023, 06:22

ER

What was the average number of miles per gallon of gasoline for a car

Sub 505 (Easy) | Word Problems

Sub 505 (Easy) | Word Problems hide tags

Bunuel

03 Oct 2018, 01:49

6

3

9,142

by: bumpbot

24 Jun 2022, 08:21

ER

What is the ratio of x to y? (1) x is 4 more than twice y

Sub 505 (Easy) | Fractions and Ratios

Sub 505 (Easy) | Fractions and Ratios hide tags

Bunuel

03 Oct 2018, 01:56

16

3

13,495

by: bumpbot

31 Mar 2025, 08:05

ER

How many books does Ricardo have? (1) If Ricardo had 15 fewer books,

Sub 505 (Easy) | Word Problems

Sub 505 (Easy) | Word Problems hide tags

Bunuel

03 Oct 2018, 02:55

3

4,850

by: Hovkial

04 Oct 2020, 00:49

ER

If 2^x(5^n) = t, what is the value of t? (1) x = n + 3 (2) 2^x = 32

Sub 505 (Easy) | Algebra, Exponents

Sub 505 (Easy) | Algebra, Exponents hide tags

Bunuel

03 Oct 2018, 03:00

9

6

9,732

by: bumpbot

07 Mar 2024, 07:55

ER

An empty rectangular swimming pool has uniform depth. How long will it

505-555 (Easy) | Geometry, Work and Rate Problems

505-555 (Easy) | Geometry, Work and Rate Problems hide tags

Bunuel

03 Oct 2018, 03:04

31

6

15,541

by: Bunuel

21 Apr 2025, 02:06

ER

Does Joe weigh more than Tim? (1) Tim’s weight is 80 percent of Joe’s

Sub 505 (Easy) | Percent and Interest Problems

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

Bunuel

03 Oct 2018, 03:10

2

7,082

by: bumpbot

22 Nov 2023, 07:31

ER

If the list price of a new car was $12,300, what was the cost of the

Sub 505 (Easy) | Percent and Interest Problems

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

Bunuel

03 Oct 2018, 03:29

9

8

11,310

by: bumpbot

17 Aug 2024, 09:18

ER

In 1979 Mr. Jackson bought a total of n shares of stock X and Mrs. Jac

505-555 (Easy) | Percent and Interest Problems

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

Bunuel

03 Oct 2018, 03:32

14

2

10,331

by: bumpbot

02 Oct 2024, 14:37

ER

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

505-555 (Easy) | Algebra, Number Properties

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

Bunuel

03 Oct 2018, 03:58

58

4

15,949

by: bumpbot

23 Aug 2025, 10:15

ER

If n is an integer, is n/7 an integer? (1) 3n/7 is an integer (2) 5n/7

Sub 505 (Easy) | Number Properties

Sub 505 (Easy) | Number Properties hide tags

Bunuel

03 Oct 2018, 04:02

18

9

12,066

by: bumpbot

16 Mar 2025, 07:17

What is the standard deviation of the age of 30 students in a class?

505-555 (Easy) | Statistics and Sets Problems

505-555 (Easy) | Statistics and Sets Problems hide tags

reynaldreni

03 Oct 2018, 19:43

1

1,554

by: Chethan92

03 Oct 2018, 19:49

ER

The Middlebury train station is between the Appleton and Lancaster sta

555-605 (Medium) | Distance and Speed Problems

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

gmat1393

03 Oct 2018, 20:58

66

11

12,344

by: bumpbot

26 Aug 2025, 23:39

ER

Are the roots of quadratic equations equal?

705-805 (Hard) | Algebra

705-805 (Hard) | Algebra hide tags

aa008

04 Oct 2018, 01:40

17

4

4,227

by: TANYA27

29 Jul 2021, 19:54

ER

If p and q are positive integers, is q odd?

605-655 (Medium) | Algebra

605-655 (Medium) | Algebra hide tags

a70

04 Oct 2018, 03:40

7

3

3,489

by: bumpbot

11 Aug 2020, 21:40

ER

Stark and Roggers are both baking pies. stark can make M pies per hour

655-705 (Hard) | Work and Rate Problems

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

Abhi077

04 Oct 2018, 21:10

22

5

3,795

by: chetan2u

29 Sep 2023, 04:32

ER

A recent lunch meeting at a certain club was attended by members and

Sub 505 (Easy) | Algebra, Word Problems

Sub 505 (Easy) | Algebra, Word Problems hide tags

gmat1393

28 Jul 2025, 10:55

9

3

9,246

by: bumpbot

28 Jul 2025, 10:53

ER

In a certain company, the average (arithmetic mean) salary of finance

705-805 (Hard) | Statistics and Sets Problems

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

GMATBusters

07 Oct 2018, 05:26

13

14

3,878

by: bumpbot

12 Sep 2025, 04:32

ER

There are 1,280 books at a library. Everyone borrows these books at le

705-805 (Hard) | Algebra

705-805 (Hard) | Algebra hide tags

GMATBusters

07 Oct 2018, 06:56

9

8

2,570

by: bumpbot

17 Jan 2026, 23:55

ER

For positive integers n and m (n>m), is the average (arithmetic mean)

805+ (Hard) | Number Properties

805+ (Hard) | Number Properties hide tags

GMATBusters

07 Oct 2018, 06:39

11

9

2,934

by: bumpbot

17 Jul 2025, 19:46

ER

Tom started a company with 5 of his friends from the college. They mad

655-705 (Hard) | Statistics and Sets Problems

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

GMATBusters

07 Oct 2018, 06:34

7

15

3,089

by: Bunuel

19 Oct 2025, 11:32

ER

If x, y, and k are positive integers, is k < 10 ?

805+ (Hard) | Algebra +2 tags

805+ (Hard) | Algebra, Exponents, Roots hide tags

harish1986

14 Oct 2018, 18:10

81

19

8,605

by: bumpbot

20 Apr 2025, 10:20

ER

If x, y and z are positive integers, is y−x>0? (1) y/x = z/y (2) z > x

555-605 (Medium) | Inequalities

555-605 (Medium) | Inequalities hide tags

Bunuel

09 Oct 2018, 02:56

5

6

2,315

by: bumpbot

14 Sep 2021, 16:32

ER

If z is positive, is |x − y| > 0? (1) xy + 2z = z (2) x^2 − 2x = 0

655-705 (Hard) | Absolute Values +2 tags

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

Bunuel

09 Oct 2018, 03:01

12

2

2,457

by: CrackverbalGMAT

23 Jul 2019, 03:52

ER

In the decimal representation of d, where 0 < d < 1, is the tenths’ di

655-705 (Hard) | Number Properties

655-705 (Hard) | Number Properties hide tags

Bunuel

09 Oct 2018, 03:05

11

5

3,078

by: smmc29

25 Feb 2021, 07:32

ER

In the sequence of non-zero numbers a1, a2, a3, ... an, ..., the value

555-605 (Medium) | Sequences

555-605 (Medium) | Sequences hide tags

Bunuel

09 Oct 2018, 03:08

6

3

2,866

by: bumpbot

10 Jun 2021, 09:05

ER

Is |x| < 1? (1) |x + 2| = 3 |x − 1| (2) |2x − 5| ≠ 0

705-805 (Hard) | Absolute Values, Inequalities

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

Bunuel

09 Oct 2018, 03:15

4

5

2,244

by: bumpbot

19 Nov 2023, 23:59

ER

Is m/n < mn? (1) mn is positive (2) n < -1

705-805 (Hard) | Inequalities

705-805 (Hard) | Inequalities hide tags

Bunuel

09 Oct 2018, 03:17

9

8

3,898

by: bumpbot

15 Mar 2023, 03:59

ER

A broker charges a brokerage which is a fixed percent of the value of

Sub 505 (Easy) | Percent and Interest Problems

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

Bunuel

09 Oct 2018, 03:17

4

1,769

by: Salsanousi

09 Oct 2018, 05:42