GMAT Data Sufficiency (DS) Forum - Free Practice Questions

ER

Complete 1000 GMAT Data Sufficiency Series (DS-1000 Series) Questions

Bunuel

25 Oct 2022, 08:11

176

15

78,662

by: thisisakr

16 Apr 2026, 11:46

ER

100 Hardest and easiest questions for DS as of March 2026

1, 2

Bunuel

01 Jan 2026, 05:45

854

24

188,481

by: bumpbot

16 Sep 2025, 06:05

ER

DS Question Directory by Topic and Difficulty

bb

29 Aug 2025, 13:27

1.5k

0

487,877

by: bb

29 Aug 2025, 13:27

ER

Working together at their respective constant rates, Tom and Matt made

655-705 (Hard) | Work and Rate Problems

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

Bhavz10

05 Jun 2020, 06:59

47

12

8,825

by: bumpbot

24 Jun 2025, 11:58

ER

Is x > 0 ? (1) x + y = - 10 (2) x - y < - 10

555-605 (Medium) | Inequalities

555-605 (Medium) | Inequalities hide tags

Bhavikasingla

10 Jan 2024, 12:57

1

3

1,147

by: HarshaBujji

14 Jan 2024, 08:20

ER

Is x < y ? (1) x^(1/2) > y (2) x^2 > y

705-805 (Hard) | Inequalities

705-805 (Hard) | Inequalities hide tags

Bhavikasingla

10 Jan 2024, 13:12

4

3

1,727

by: chetan2u

10 Aug 2024, 06:55

ER

What is the average temperature from Monday through Saturday of a week

505-555 (Easy) | Statistics and Sets Problems, Word Problems

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

bhatiamanu05

18 Dec 2018, 23:24

4

4,609

by: Krabhay

18 Dec 2018, 23:22

The regular ticket price for a certain showing of a film

555-605 (Medium) | Word Problems

555-605 (Medium) | Word Problems hide tags

bhargavhhhhhhhh

12 Apr 2025, 00:15

3

1

1,090

by: Dereno

12 Apr 2025, 01:00

If a train traveled a route of 1,000 kilometers

605-655 (Medium) | Distance and Speed Problems

605-655 (Medium) | Distance and Speed Problems hide tags

bhargavhhhhhhhh

12 Apr 2025, 00:19

7

1

1,587

by: Dereno

12 Apr 2025, 01:05

Energy Source: Annual Generation (GWh) Solar: 2,200 Wind

655-705 (Hard) | Non-Math Related, Word Problems

655-705 (Hard) | Non-Math Related, Word Problems hide tags

bhargavhhhhhhhh

15 Apr 2025, 09:02

6

2

2,143

by: napolean92728

12 May 2025, 23:31

For any individual, net calorie intake equals one's total

605-655 (Medium) | Word Problems

605-655 (Medium) | Word Problems hide tags

bhargavhhhhhhhh

18 May 2025, 11:05

2

709

by: stne

19 May 2025, 05:22

ER

A supermarket holds a promotional lottery, whose winners

555-605 (Medium) | Combinations

555-605 (Medium) | Combinations hide tags

bhargavhhhhhhhh

02 Apr 2025, 10:19

2

1,187

by: rajdeep212003

25 Apr 2026, 01:20

ER

Density refers to the heaviness of a certain amount of a substance:

705-805 (Hard) | Mixture Problems, Word Problems

705-805 (Hard) | Mixture Problems, Word Problems hide tags

bhanu29

20 Nov 2025, 06:19

18

6

2,050

by: bhanu29

21 Nov 2025, 22:58

ER

Eli has arranged all his books on two shelves such that the upper and

705-805 (Hard) | Math Related, Word Problems

705-805 (Hard) | Math Related, Word Problems hide tags

bhanu29

27 Nov 2025, 19:56

24

4

1,551

by: MartyMurray

28 Nov 2025, 11:23

Can the students at Ridgecrest Elementary School be divided evenly int

705-805 (Hard) | Multiples and Factors

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

bhanu29

15 Nov 2025, 03:26

6

3

582

by: bhanu29

15 Dec 2025, 18:17

ER

Lines a and b have different y-intercepts. When line a is

805+ (Hard) | Coordinate Plane

805+ (Hard) | Coordinate Plane hide tags

bhandariavi

20 Mar 2011, 17:15

23

15

8,663

by: bumpbot

30 Nov 2021, 06:26

ER

Quadrilateral ABCD is inscribed in circle K. The diameter of

805+ (Hard) | Geometry

805+ (Hard) | Geometry hide tags

bhandariavi

05 Feb 2011, 18:04

79

19

30,056

by: bumpbot

02 Dec 2023, 10:40

ER

A line with the equation y = px + q is reflected over the

805+ (Hard) | Coordinate Plane

805+ (Hard) | Coordinate Plane hide tags

bhandariavi

20 Mar 2011, 17:14

51

18

14,714

by: bumpbot

07 Oct 2024, 00:29

ER

A group of 9 people is traveling in two taxis from one

705-805 (Hard) | Combinations

705-805 (Hard) | Combinations hide tags

bhandariavi

20 Mar 2011, 16:20

72

17

13,956

by: bumpbot

22 Aug 2025, 02:41

ER

A group consisting of N couples are going to see a movie.

655-705 (Hard) | Combinations

655-705 (Hard) | Combinations hide tags

bhandariavi

22 Mar 2011, 20:50

45

13

10,559

by: bumpbot

15 Oct 2025, 09:06

ER

If k is a positive integer, is k a prime number?

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

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

bhandariavi

19 Jun 2010, 11:37

82

8

22,483

by: bumpbot

07 Jan 2026, 00:18

ER

If 2 < x < 4, what is the median of the numbers 0, 5, x, 1,

555-605 (Medium) | Algebra, Statistics and Sets Problems

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

1, 2

bgribble

30 Nov 2013, 11:54

170

23

49,990

by: bumpbot

06 Jul 2025, 10:58

ER

Are the integers q, r and s consecutive?

555-605 (Medium) | Statistics and Sets Problems

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

bewakoof

08 Jul 2013, 07:21

35

9

12,289

by: bumpbot

20 May 2025, 10:03

ER

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

Sub 505 (Easy) | Algebra

Sub 505 (Easy) | Algebra hide tags

bettatantalo

16 Sep 2018, 09:05

2

1,695

by: BrentGMATPrepNow

17 Sep 2018, 11:18

ER

The circular base of a planter sits on a level lawn, and

505-555 (Easy) | Geometry

505-555 (Easy) | Geometry hide tags

Berbatov

26 Aug 2011, 02:02

12

6

6,071

by: bumpbot

18 Apr 2021, 15:27

ER

What is the degree measure of angle a in the figure above?

605-655 (Medium) | Geometry

605-655 (Medium) | Geometry hide tags

Berbatov

12 Feb 2019, 06:01

40

8

23,126

by: Shrihari12

27 Jul 2021, 07:03

What is the length of line segment AB? All / s are equal,

605-655 (Medium) | Geometry

605-655 (Medium) | Geometry hide tags

Berbatov

31 Aug 2011, 02:03

3

7

5,517

by: bumpbot

13 Jan 2022, 02:50

ER

In the diagram above, if arc ABC is a semicircle, what is

605-655 (Medium) | Geometry

605-655 (Medium) | Geometry hide tags

Berbatov

26 Aug 2011, 01:59

93

18

33,423

by: bumpbot

08 Nov 2022, 09:17

ER

If both x and y are positive integers that are divisible by

655-705 (Hard) | Multiples and Factors

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

Berbatov

17 Sep 2012, 08:24

18

16

13,941

by: bumpbot

24 Sep 2024, 21:36

ER

In a survey of a certain locality it was found that 80% of

Sub 505 (Easy) | Overlapping Sets

Sub 505 (Easy) | Overlapping Sets hide tags

benjamin09

19 Aug 2014, 07:29

13

3

11,491

by: bumpbot

24 Sep 2024, 05:04

ER

If pq 0, is p + q > 1/p + 1/q? (1) p < q < 1 (2) pq < 1

705-805 (Hard) | Inequalities

705-805 (Hard) | Inequalities hide tags

BengalScientist

12 Jun 2013, 19:33

29

8

10,957

by: bumpbot

24 Aug 2025, 21:52

A two digit number is randomly selected and multiplied by itself x

605-655 (Medium) | Multiples and Factors, Probability

605-655 (Medium) | Multiples and Factors, Probability hide tags

benejo

06 Apr 2018, 02:49

26

5

5,437

by: bumpbot

29 Aug 2024, 09:36

ER

If a and b are positive integers, what is the remainder when 9^2a+b

555-605 (Medium) | Multiples and Factors

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

benejo

05 Apr 2018, 06:32

12

6

2,621

by: bumpbot

20 Oct 2024, 06:13

ER

What percentage of students in the class know Spanish?

705-805 (Hard) | Overlapping Sets

705-805 (Hard) | Overlapping Sets hide tags

benejo

05 Apr 2018, 04:36

5

3

2,006

by: Bunuel

18 Jan 2026, 12:15

ER

If a, b, c, and d are all positive integers, a = b/5 + 2 and d = c/7 +

655-705 (Hard) | Number Properties

655-705 (Hard) | Number Properties hide tags

BelaHaqi

23 Jan 2018, 21:02

8

5

2,857

by: bumpbot

11 Aug 2024, 05:24

ER

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

555-605 (Medium) | Algebra

555-605 (Medium) | Algebra hide tags

bekerman

26 May 2014, 10:46

2

2,956

by: bumpbot

01 Oct 2023, 02:13

ER

If x and y are positive integers, is x a prime number?

805+ (Hard) | Absolute Values +2 tags

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

bekerman

22 May 2014, 17:42

179

18

23,333

by: bumpbot

30 Jul 2025, 09:14

ER

If k is a positive integer and the tens digit of k+5 is 4

605-655 (Medium) | Fractions and Ratios, Number Properties

605-655 (Medium) | Fractions and Ratios, Number Properties hide tags

bekbek

27 Jul 2015, 08:48

117

4

25,729

by: bumpbot

25 Apr 2025, 11:35

ER

What is the numerical value of 1/a + 1/b + 1/c ?

655-705 (Hard) | Algebra

655-705 (Hard) | Algebra hide tags

BeavisMan

03 Sep 2010, 19:18

18

13

33,999

by: bumpbot

21 Nov 2024, 06:26

ER

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

505-555 (Easy) | Algebra

505-555 (Easy) | Algebra hide tags

BDSunDevil

22 May 2012, 10:50

11

3

5,790

by: bumpbot

13 Jul 2023, 14:21

ER

If x and y are positive integers and 1 + x + y +xy = 21

605-655 (Medium) | Algebra

605-655 (Medium) | Algebra hide tags

BDSunDevil

11 Jun 2012, 08:20

42

10

14,291

by: bumpbot

23 Nov 2023, 14:48

ER

A museum sold 30 tickets on Saturday. Some of the tickets

655-705 (Hard) | Inequalities, Word Problems

655-705 (Hard) | Inequalities, Word Problems hide tags

BDSunDevil

11 Jun 2012, 08:14

31

12

12,146

by: bumpbot

30 Nov 2024, 23:06

ER

If the three-digit integer x=”abc”, where a, b, and c

555-605 (Medium) | Fractions and Ratios

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

BDSunDevil

04 May 2012, 07:21

63

9

13,452

by: bumpbot

25 Jan 2025, 03:36

ER

If n and p are positive integers, is 10^n - 1 divisible by p ?

555-605 (Medium) | Multiples and Factors

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

bblast

08 May 2023, 08:31

9

1

9,445

by: Bunuel

08 May 2023, 08:32

ER

The sale price of a certain jacket was 15 percent less than its origin

505-555 (Easy) | Percent and Interest Problems, Word Problems

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

bbhawini

20 Sep 2017, 23:54

18

3

10,402

by: bumpbot

05 Apr 2026, 16:21

ER

If vertices of a triangle are A (5, 0), B (x, y) and C (25, 0), what

555-605 (Medium) | Coordinate Plane, Geometry

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

bb

11 Oct 2021, 03:50

45

7

16,052

by: bumpbot

26 Aug 2025, 23:56

ER

25 Hardest DS Questions (2025-2026)

655-705 (Hard) | Multiples and Factors

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

bb

04 Mar 2026, 23:43

4

0

387

by: bb

04 Mar 2026, 23:43

ER

If B is a set of real numbers, is there a number in B that

655-705 (Hard) | Statistics and Sets Problems

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

battleprof

23 Apr 2013, 09:46

10

17

8,671

by: bumpbot

23 Dec 2024, 06:29

ER

List A contains 16 distinct odd integers and 9 distinct even integers

705-805 (Hard) | Number Properties

705-805 (Hard) | Number Properties hide tags

baru

15 Jul 2019, 10:18

8

7

2,463

by: bumpbot

07 Sep 2024, 04:16

ER

Is m^n a perfect square?

Poor Quality

Poor Quality hide tags

barryseal

01 Dec 2018, 06:24

5

15

1,832

by: barryseal

03 Dec 2018, 00:11

What is the value of X? 1) X is a mode of 2) X is neither

505-555 (Easy) | Statistics and Sets Problems

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

BarneyStinson

14 Mar 2010, 13:31

2

5

4,067

by: karan12345

02 Jun 2020, 00:05

ER

If a and b are positive, is (a^(-1) + b^(-1))^(-1) less than

655-705 (Hard) | Exponents, Inequalities

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

barakhaiev

11 Oct 2013, 06:44

4

3

4,181

by: Bunuel

11 Oct 2013, 06:46

ER

If x + y is an integer, is y an integer?

605-655 (Medium) | Number Properties

605-655 (Medium) | Number Properties hide tags

BANON

01 Mar 2012, 08:39

21

10

15,247

by: bumpbot

29 Oct 2024, 23:23