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

182

15

83,117

by: thisisakr

16 Apr 2026, 11:46

ER

100 Hardest and easiest questions for DS as of May 2026

1, 2

Bunuel

01 Jan 2026, 05:45

862

24

191,326

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

491,221

by: bb

29 Aug 2025, 13:27

ER

What is the average (arithmetic mean) of eleven consecutive

555-605 (Medium) | Statistics and Sets Problems

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

1, 2

zz0vlb

23 Apr 2010, 18:05

474

26

92,774

by: ankushsambare

14 Apr 2026, 03:12

ER

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

705-805 (Hard) | Absolute Values +2 tags

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

sh00nya

21 Nov 2013, 02:52

61

7

12,867

by: bumpbot

17 Mar 2025, 07:53

ER

If n is a positive integer and r is the remainder when 4 + 7n is divid

555-605 (Medium) | Remainders

555-605 (Medium) | Remainders hide tags

1, 2

LM

17 Jun 2019, 04:07

376

20

60,835

by: GmatCracker09

07 Nov 2024, 08:30

ER

If m, r, x and y are positive, the ratio of m to r equal to the ratio

555-605 (Medium) | Fractions and Ratios

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

LM

27 Apr 2010, 09:52

214

18

52,461

by: bumpbot

15 Nov 2024, 10:05

ER

During a 40-mile trip, Marla traveled at an average speed of

605-655 (Medium) | Distance and Speed Problems

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

LM

27 Apr 2010, 09:55

431

18

76,199

by: bumpbot

20 Mar 2026, 01:30

ER

Six countries in a certain region sent a total of 75 representatives

655-705 (Hard) | Min-Max Problems, Word Problems

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

1, 2

LM

27 Apr 2010, 09:57

719

25

110,034

by: bumpbot

24 May 2026, 02:10

ER

Are at least 10 percent of the people in Country X who are 65 years

655-705 (Hard) | Statistics and Sets Problems, Word Problems

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

1, 2

LM

21 Jan 2018, 23:45

1.0k

35

139,092

by: Dream009

27 Dec 2025, 11:16

ER

If s and t are two different numbers on the number line, is s + t = 0

555-605 (Medium) | Absolute Values

555-605 (Medium) | Absolute Values hide tags

LM

14 Feb 2019, 00:40

219

15

54,990

by: bumpbot

07 Nov 2024, 00:55

ER

What is the hundredths digit of the decimal z?

555-605 (Medium) | Fractions and Ratios

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

LM

05 Jun 2019, 04:23

465

14

86,360

by: bumpbot

04 Sep 2025, 21:55

ER

A certain list consist of several different integers. Is the product

605-655 (Medium) | Statistics and Sets Problems

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

zz0vlb

17 Oct 2019, 03:37

152

18

35,125

by: Bunuel

03 Jan 2026, 12:10

ER

Is the integer n a multiple of 15?

505-555 (Easy) | Multiples and Factors

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

zz0vlb

28 Apr 2010, 07:59

53

13

25,111

by: Broc

21 Dec 2024, 13:29

ER

What is the total surface area of rectangular solid R ?

Sub 505 (Easy) | Geometry

Sub 505 (Easy) | Geometry hide tags

zz0vlb

16 May 2014, 07:18

9

11

16,994

by: bumpbot

12 Jan 2023, 02:01

ER

Is |k| = 2? (1) k^2 = 4 (2) k = |-2|

Sub 505 (Easy) | Absolute Values

Sub 505 (Easy) | Absolute Values hide tags

zz0vlb

28 Apr 2010, 12:30

29

5

14,189

by: bumpbot

11 Nov 2024, 23:05

ER

What is the median of a certain set of 7 numbers?

Sub 505 (Easy) | Statistics and Sets Problems

Sub 505 (Easy) | Statistics and Sets Problems hide tags

zz0vlb

05 Jan 2015, 05:09

6

4

11,655

by: bumpbot

12 Oct 2024, 06:39

ER

If x and y are positive integers, is x^16 - y^8 + 345y^2 div

605-655 (Medium) | Remainders

605-655 (Medium) | Remainders hide tags

thanatoz

29 Apr 2010, 00:29

14

5

12,184

by: bumpbot

25 Dec 2025, 22:11

ER

What percent of a group of people are women with red hair?

Sub 505 (Easy) | Overlapping Sets

Sub 505 (Easy) | Overlapping Sets hide tags

Bunuel

02 May 2010, 07:38

27

16

23,635

by: totaltestprepNick

03 Mar 2026, 13:11

ER

If m and n are nonzero integers, is m/n an integer?

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

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

divanshuj

02 May 2010, 12:32

48

15

20,171

by: nivivacious

07 Sep 2023, 01:05

The amount of coal a train burns each mile is directly propo

555-605 (Medium) | Distance and Speed Problems, Word Problems

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

gmatmathguy123

26 May 2014, 02:11

34

8

14,967

by: vrinda6

09 Apr 2026, 01:30

ER

If x and y are integers, is |x| > |y|? 1) |x| = |y+1| 2)

Poor Quality

Poor Quality hide tags

bibha

05 May 2010, 07:28

2

19

6,545

by: gmatmachoman

26 Aug 2011, 12:32

ER

The integers m and p are such that 2<m<p, and m is not a

705-805 (Hard) | Multiples and Factors +2 tags

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

LM

28 Mar 2012, 02:48

372

19

42,549

by: bumpbot

17 May 2025, 06:19

ER

Is the three-digit number n less than 550?

655-705 (Hard) | Number Properties

655-705 (Hard) | Number Properties hide tags

LM

06 May 2010, 12:31

79

11

23,821

by: bumpbot

18 Jul 2025, 03:35

ER

If x + y > 0, is x > |y|? (1) x > y (2) y < 0

655-705 (Hard) | Absolute Values, Inequalities

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

bibha

07 May 2010, 22:05

120

7

22,656

by: bumpbot

10 Dec 2025, 02:22

ER

If S is the sum of the first n positive integers, what is the value of

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

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

1, 2

abhi758

08 May 2010, 02:11

192

21

31,419

by: juliansorre

26 Mar 2026, 12:43

ER

If L 0, is 18K/L an integer?

655-705 (Hard) | Number Properties

655-705 (Hard) | Number Properties hide tags

msand

09 May 2010, 03:28

23

6

7,972

by: bumpbot

17 Dec 2025, 20:04

ER

The hypotenuse of a right triangle is 10 cm. What is the

655-705 (Hard) | Geometry

655-705 (Hard) | Geometry hide tags

1, 2

marcusaurelius

09 May 2010, 11:43

659

30

126,616

by: bumpbot

07 Jan 2025, 16:34

ER

If m > 0 and n > 0, is (m + x)/(n + x) > m/n?

555-605 (Medium) | Inequalities

555-605 (Medium) | Inequalities hide tags

LM

03 Apr 2019, 21:35

214

16

32,902

by: bumpbot

21 Apr 2025, 20:39

ER

Is z equal to the median of the three positive integers, x, y, and z?

505-555 (Easy) | Statistics and Sets Problems

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

1, 2

LM

28 Nov 2017, 01:19

129

20

47,505

by: bumpbot

16 Oct 2024, 12:52

ER

The figure above shows the number of meters in the lengths

505-555 (Easy) | Geometry

505-555 (Easy) | Geometry hide tags

mailash

10 May 2010, 16:48

95

5

21,933

by: bumpbot

20 Aug 2024, 09:44

ER

The area of the right triangle ABC is 4 times greater than

655-705 (Hard) | Geometry

655-705 (Hard) | Geometry hide tags

TXTDryFly

12 Jul 2013, 02:23

69

6

21,545

by: subhashghosh

04 May 2011, 03:50

ER

If N is a positive integer, what is the last digit of 1! +

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

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

Dartastic

11 May 2010, 18:56

102

17

21,323

by: bumpbot

29 Feb 2024, 02:00

ER

Harvey teaches a certain number of biology students in 2

555-605 (Medium) | Word Problems

555-605 (Medium) | Word Problems hide tags

bakfed

12 May 2010, 07:23

40

8

15,631

by: bumpbot

07 Jul 2025, 08:21

ER

During an experiment, some water was removed from each of

555-605 (Medium) | Statistics and Sets Problems

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

vaivish1723

13 May 2010, 04:07

431

19

72,593

by: bumpbot

07 Sep 2025, 05:13

ER

If ab0 and points (-a, b) and (-b, a) are in the same quadrant of the

805+ (Hard) | Coordinate Plane

805+ (Hard) | Coordinate Plane hide tags

1, 2

jitendra

05 Dec 2022, 08:26

308

21

43,846

by: bumpbot

19 Dec 2025, 10:16

If pq = -8, what is the value of pq(p - q) ?

705-805 (Hard) | Algebra

705-805 (Hard) | Algebra hide tags

nifoui

17 May 2010, 12:53

14

10

6,211

by: bumpbot

21 Apr 2023, 23:18

ER

If x is a positive integer, what is the units digit of x^2?

555-605 (Medium) | Fractions and Ratios

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

marcusaurelius

14 Sep 2013, 15:23

32

9

14,326

by: TDTGiang

11 Dec 2024, 09:50

ER

Andy, George, and Sally are a team of consultants working on

705-805 (Hard) | Work and Rate Problems

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

R2I4D

17 May 2010, 17:17

39

10

13,264

by: IanStewart

25 Sep 2012, 00:33

ER

Given that n is an integer, is n 1 divisible by 3?

605-655 (Medium) | Multiples and Factors

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

dimitri92

18 May 2010, 05:36

78

18

25,869

by: bumpbot

26 Mar 2025, 06:57

ER

Each employee of a certain task force is either a manager or a directo

705-805 (Hard) | Word Problems

705-805 (Hard) | Word Problems hide tags

achan

13 Jun 2019, 03:22

733

18

96,939

by: bumpbot

31 Oct 2025, 10:03

ER

In a sequence of 13 consecutive integers, all of which are

805+ (Hard) | Multiples and Factors, Sequences

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

dimitri92

02 Jul 2013, 14:05

43

14

14,429

by: bumpbot

04 Aug 2025, 23:17

ER

Is x/3 an integer?

705-805 (Hard) | Number Properties

705-805 (Hard) | Number Properties hide tags

dimitri92

19 May 2010, 01:49

18

10

7,485

by: Kinshook

23 May 2024, 22:32

ER

What is the remainder r when x is divided by 8? x is a posit

605-655 (Medium) | Remainders

605-655 (Medium) | Remainders hide tags

dimitri92

19 May 2010, 01:51

36

6

9,943

by: bumpbot

06 Dec 2023, 17:32

ER

Point (r,s) lies on the line L. Is the line s intercept with

655-705 (Hard) | Coordinate Plane

655-705 (Hard) | Coordinate Plane hide tags

dimitri92

19 Oct 2012, 03:31

43

6

10,393

by: bumpbot

07 Aug 2023, 01:37

ER

In the xy-plane, both line K and L intersect with axis-y. Is

705-805 (Hard) | Coordinate Plane

705-805 (Hard) | Coordinate Plane hide tags

dimitri92

20 May 2010, 01:15

62

18

13,120

by: bumpbot

27 Jan 2023, 23:03

ER

A terminating decimal is defined as a decimal that has a

Sub 505 (Easy) | Fractions and Ratios

Sub 505 (Easy) | Fractions and Ratios hide tags

shekar123

22 May 2010, 14:35

98

15

32,512

by: bumpbot

03 Apr 2025, 09:47

ER

In the xy-plane, if line k has negative slope and passes

555-605 (Medium) | Coordinate Plane

555-605 (Medium) | Coordinate Plane hide tags

seekmba

22 May 2010, 14:41

19

9

7,780

by: mvictor

17 Jan 2017, 16:01

ER

If x is an integer, what is the value of x? (1) x^2 - 4x + 3

655-705 (Hard) | Inequalities

655-705 (Hard) | Inequalities hide tags

1, 2

dimitri92

04 Aug 2012, 00:59

970

25

102,938

by: bumpbot

23 Jan 2026, 08:22

ER

Is x^3 > y^2?

555-605 (Medium) | Inequalities

555-605 (Medium) | Inequalities hide tags

dimitri92

23 May 2010, 00:33

7

3

4,953

by: bumpbot

07 Nov 2021, 08:17

ER

If -2x > 3y, is x negative? (1) y > 0 (2) 2x + 5y - 20 = 0

705-805 (Hard) | Inequalities

705-805 (Hard) | Inequalities hide tags

dimitri92

23 May 2010, 00:35

151

11

26,544

by: totaltestprepNick

28 Feb 2026, 09:46

ER

If [x] denotes the greatest integer less than or equal to x

Sub 505 (Easy) | Functions and Custom Characters

Sub 505 (Easy) | Functions and Custom Characters hide tags

1, 2

musabber

05 Mar 2020, 00:24

173

27

93,259

by: ManifestDreamMBA

20 Apr 2025, 09:18

ER

Two trains, Q and P, are traveling on straight and parallel

555-605 (Medium) | Distance and Speed Problems

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

shekar123

23 May 2010, 09:24

14

5

7,721

by: bumpbot

05 Aug 2024, 10:56