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

79,252

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

188,848

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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

488,474

by: bb

29 Aug 2025, 13:27

ER

Is q^2 an odd integer? (1) q is an odd integer (2) q^4 is a

655-705 (Hard) | Number Properties

655-705 (Hard) | Number Properties hide tags

enigma123

19 Mar 2012, 04:59

11

5

3,731

by: bumpbot

30 May 2017, 11:36

ER

A quadrilateral is inscribed in a circle. If the

655-705 (Hard) | Geometry

655-705 (Hard) | Geometry hide tags

Smita04

02 Feb 2012, 21:44

11

14

8,185

by: MathRevolution

03 Jul 2017, 13:52

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If x and y are positive integers, what is the remainder when 5^x is

555-605 (Medium) | Remainders

555-605 (Medium) | Remainders hide tags

Bunuel

17 Jun 2015, 06:02

11

8

4,964

by: bumpbot

04 Oct 2017, 07:15

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If x, y, and z are distinct positive integers, is x(y – z) less than y

555-605 (Medium) | Algebra, Inequalities

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

AbdurRakib

22 Jul 2016, 13:06

11

4

5,349

by: MathRevolution

28 Oct 2017, 13:15

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In an Isosceles Triangle ABC, point D lies on segment BC. Angle B is 4

805+ (Hard) | Geometry

805+ (Hard) | Geometry hide tags

raj44

12 Dec 2014, 07:43

11

10

6,717

by: Madhavi1990

05 Nov 2017, 03:07

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Is P even?

805+ (Hard) | Number Properties

805+ (Hard) | Number Properties hide tags

sb0541

22 Oct 2016, 07:05

11

4

5,874

by: EMPOWERgmatRichC

21 Nov 2017, 15:49

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ab = 0?

655-705 (Hard) | Algebra

655-705 (Hard) | Algebra hide tags

Creeper300

07 Nov 2010, 13:49

11

3

4,474

by: MathRevolution

24 Nov 2017, 16:25

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The number of people present at each level, except the topmost, of a

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PrepTap

05 Jun 2015, 04:45

11

6

2,858

by: Timebomb

24 Feb 2018, 05:10

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In the figure below, segments AB and CD represent two different ways

655-705 (Hard) | Geometry

655-705 (Hard) | Geometry hide tags

Bunuel

14 Jan 2015, 02:21

11

7

3,335

by: bumpbot

25 Jul 2018, 18:22

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

555-605 (Medium) | Exponents, Number Properties

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

Bunuel

31 Aug 2018, 23:04

11

2

4,866

by: sumit411

01 Sep 2018, 00:49

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If the average (arithmetic mean) of seven unequal numbers is 20, what

555-605 (Medium) | Statistics and Sets Problems

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

Bunuel

25 Oct 2018, 02:25

11

13

3,300

by: DavidTutorexamPAL

26 Oct 2018, 05:23

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In a thoroughly blended mix of chocolate and vanilla, what is

555-605 (Medium) | Percent and Interest Problems

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

Tan2017

30 Apr 2017, 23:59

11

3

2,395

by: bumpbot

11 Nov 2018, 02:27

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In the fraction a/b, where a and b are positive integers, what is the

655-705 (Hard) | Fractions and Ratios

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

Bunuel

11 Jan 2015, 12:24

11

8

3,654

by: bumpbot

13 Nov 2018, 20:27

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If P is a sector in circle of radius 6, what is the area of the smalle

655-705 (Hard) | Geometry

655-705 (Hard) | Geometry hide tags

Bunuel

09 Sep 2018, 08:04

11

2

1,925

by: kunalcvrce

09 Feb 2019, 09:33

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A set S={10,1,5,a,b,6,c} where a,b&c are different positive integers,

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kiran120680

13 Mar 2019, 02:25

11

12

4,136

by: GMATBusters

25 Mar 2019, 08:41

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What is the value of x?

655-705 (Hard) | Algebra +2 tags

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rohankant12

04 Sep 2015, 10:01

11

17

3,582

by: Mo2men

07 Apr 2019, 12:33

If p and q are composite integers, is p/q an integer?

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

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

Amrita2405

14 Apr 2019, 10:35

11

5

2,664

by: JDF

24 Apr 2019, 20:34

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What is the largest number with exactly 3 factors that divides n! ? 1)

805+ (Hard) | Fractions and Ratios, Multiples and Factors

805+ (Hard) | Fractions and Ratios, Multiples and Factors hide tags

TheUltimateWinner

03 Jun 2019, 13:16

11

7

3,312

by: TheUltimateWinner

04 Jun 2019, 22:38

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Is 1/x^5 > y/(y^6+1)? (1) x = y (2) y > 0

605-655 (Medium) | Inequalities

605-655 (Medium) | Inequalities hide tags

gmatjon

08 Jul 2019, 22:01

11

18

5,348

by: Archit3110

09 Jul 2019, 10:03

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At a particular school, 60 male students play sports. How many male st

705-805 (Hard) | Overlapping Sets

705-805 (Hard) | Overlapping Sets hide tags

Bunuel

06 Apr 2016, 02:11

11

8

3,716

by: bumpbot

20 Aug 2019, 09:32

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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

3,412

by: auradediligodo

13 Oct 2019, 12:13

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Is k < 0? (1) |2k + 5| = 3k + 1 (2) |k - 2| = 7k

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btrg

16 Apr 2019, 20:25

11

5

2,782

by: Bunuel

21 Oct 2019, 20:38

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If xy ≠ 0, is the reciprocal of x/y greater than x/y?

705-805 (Hard) | Inequalities

705-805 (Hard) | Inequalities hide tags

Bunuel

20 Dec 2015, 04:59

11

5

6,113

by: minustark

25 Nov 2019, 20:11

A coordinate plane is shown in the figure..

705-805 (Hard) | Coordinate Plane

705-805 (Hard) | Coordinate Plane hide tags

peacewarriors

23 May 2014, 01:09

11

3

2,755

by: bumpbot

10 Dec 2019, 03:10

ER

What is the value of |a| - |b| ?

555-605 (Medium) | Absolute Values

555-605 (Medium) | Absolute Values hide tags

Bunuel

28 May 2015, 06:20

11

4,447

by: bumpbot

11 Dec 2019, 22:54

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Is the x-intercept of the non-horizontal line L negative?

705-805 (Hard) | Coordinate Plane

705-805 (Hard) | Coordinate Plane hide tags

fskilnik

18 Feb 2019, 10:04

11

4

2,143

by: exc4libur

12 Dec 2019, 05:44

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If z is an integer, is z even? (1) (z + 7)/3 = 2m + 1, where m is an

505-555 (Easy) | Number Properties

505-555 (Easy) | Number Properties hide tags

Bunuel

17 Feb 2020, 02:01

11

3,589

by: vthatha

17 Feb 2020, 23:12

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A certain bookstore sold 1/2 of the books in its stock. Then, after an

Sub 505 (Easy) | Fractions and Ratios

Sub 505 (Easy) | Fractions and Ratios hide tags

Bunuel

06 Mar 2020, 02:03

11

13

4,633

by: TheUnicorn

08 Mar 2020, 23:24

ER

At a certain circus, every child was given either two or three balloon

505-555 (Easy) | Word Problems

505-555 (Easy) | Word Problems hide tags

Bunuel

14 Nov 2014, 09:55

11

7

4,400

by: bumpbot

24 Mar 2020, 21:50

ER

If x and y are integers with y > 0, is x positive ?

505-555 (Easy) | Absolute Values, Inequalities

505-555 (Easy) | Absolute Values, Inequalities hide tags

Bunuel

03 Aug 2018, 10:12

11

6

6,119

by: chaitralirr

30 Mar 2020, 23:49

ER

If each of d, q, and r is a positive integer such that dq + r = 3, wha

805+ (Hard) | Inequalities, Number Properties

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

Bunuel

20 Mar 2020, 04:58

11

5

3,525

by: chetan2u

05 Apr 2020, 23:37

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x - y = 5? (1) x*y = y(y + 5) (2) xy ≠ 0

555-605 (Medium) | Algebra

555-605 (Medium) | Algebra hide tags

Casey1985

31 Jan 2020, 22:00

11

8

2,468

by: Bunuel

28 Apr 2020, 00:26

ER

In the given figure, O is the center of the circle and BC is the tange

555-605 (Medium) | Geometry

555-605 (Medium) | Geometry hide tags

Bunuel

02 Jun 2020, 04:27

11

10

3,675

by: Shrey08

04 Jun 2020, 21:03

ER

What is the length of diameter PR in the circle shown above?

655-705 (Hard) | Geometry

655-705 (Hard) | Geometry hide tags

Bunuel

13 Sep 2018, 02:33

11

5

2,800

by: TestPrepUnlimited

22 Jun 2020, 11:09

ER

If a, b and c are positive, is ac > 5?

655-705 (Hard) | Algebra, Inequalities

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

Bunuel

14 Aug 2017, 02:02

11

5

3,400

by: bumpbot

30 Jun 2020, 03:06

ER

The cost of buying x units of a certain product is given by the

555-605 (Medium) | Word Problems

555-605 (Medium) | Word Problems hide tags

petu

05 Apr 2015, 08:45

11

3

3,363

by: Archit3110

02 Jul 2020, 08:19

ER

What is the value of p?

Sub 505 (Easy) | Absolute Values, Algebra

Sub 505 (Easy) | Absolute Values, Algebra hide tags

Bunuel

20 Dec 2015, 05:14

11

4

4,786

by: Bunuel

01 Sep 2020, 03:17

ER

Is the line l given by ax+by=c perpendicular to the line 2x+7y=3?

605-655 (Medium) | Coordinate Plane

605-655 (Medium) | Coordinate Plane hide tags

TheUltimateWinner

20 Aug 2020, 08:41

11

2,328

by: IanStewart

06 Sep 2020, 10:54

ER

If x is a positive integer, is the greatest common factor of 150 and x

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

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

Bunuel

25 Jun 2017, 03:22

11

5

8,206

by: bumpbot

07 Sep 2020, 20:53

ER

If k is a positive integer, is k an integer?

505-555 (Easy) | Number Properties

505-555 (Easy) | Number Properties hide tags

gmatser1

23 Jun 2015, 01:01

11

7

3,471

by: MHIKER

22 Sep 2020, 09:40

ER

If z is a positive integer, is z^(1/2) an integer?

655-705 (Hard) | Number Properties

655-705 (Hard) | Number Properties hide tags

Bunuel

24 Dec 2017, 01:44

11

4

2,569

by: chetan2u

25 Nov 2020, 20:01

ER

Is the prime number q equal to 29 ?

805+ (Hard) | Multiples and Factors, Number Properties

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

Bunuel

25 Dec 2017, 05:42

11

5

2,897

by: Bibah

23 Dec 2020, 10:43

ER

If m, n and p are digits and their product is a digit, what is value

705-805 (Hard) | Algebra, Number Properties

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

Bunuel

19 Jan 2017, 08:05

11

10

2,995

by: suchita2409

08 Jan 2021, 02:47

ER

If xy < 3, is x < 3 ?

655-705 (Hard) | Absolute Values, Inequalities

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

Ankit04041987

18 Jun 2012, 02:23

11

10

6,360

by: CEdward

02 Feb 2021, 14:59

ER

If x is a positive integer and z = x! + (x + 2), is z prime?

655-705 (Hard) | Number Properties

655-705 (Hard) | Number Properties hide tags

goodyear2013

12 Jan 2014, 07:25

11

2

4,737

by: bumpbot

14 Feb 2021, 03:56

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

3,074

by: smmc29

25 Feb 2021, 07:32

ER

Three quarters, three dimes, and x nickels are the only coins in a jar

555-605 (Medium) | Probability

555-605 (Medium) | Probability hide tags

Bunuel

07 May 2017, 14:21

11

4,420

by: bumpbot

28 Mar 2021, 10:00

25<X<28, where X represents the number of factors of Joey's house

705-805 (Hard) | Exponents +2 tags

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

PrepTap

24 Apr 2015, 05:16

11

4

3,185

by: bumpbot

01 Apr 2021, 03:57

ER

In the figure above, if angle ABC = 110 degrees, and angle AED = 100 d

705-805 (Hard) | Geometry

705-805 (Hard) | Geometry hide tags

rxs0005

13 Aug 2010, 10:49

11

7

6,067

by: bumpbot

07 Apr 2021, 02:27

ER

The equations ax + 2y = 6 and bx + cy = 9 have infinite solutions.

705-805 (Hard) | Algebra

705-805 (Hard) | Algebra hide tags

Bunuel

11 Jul 2017, 03:36

11

8

3,038

by: bumpbot

08 Apr 2021, 03:44