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

79,008

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

188,690

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

488,208

by: bb

29 Aug 2025, 13:27

Triangles ABC and DEF are similar right triangles. If the hypotenuse

805+ (Hard) | Algebra, Geometry

805+ (Hard) | Algebra, Geometry hide tags

giobas

01 Mar 2017, 11:41

55

6

9,802

by: gmatophobia

18 Nov 2022, 23:08

ER

The average (arithmetic mean) cost of three computer models is $900.

705-805 (Hard) | Word Problems

705-805 (Hard) | Word Problems hide tags

GinGMAT

05 Mar 2016, 12:08

49

4

9,071

by: bumpbot

17 Jun 2025, 23:37

ER

A factory manager estimated the average productivity (in widgets)

705-805 (Hard) | Work and Rate Problems

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

GianKR

20 Jul 2023, 14:51

23

7

4,356

by: bumpbot

09 Feb 2026, 08:25

ER

A hose fills half a bucket in 16 minutes.

805+ (Hard) | Work and Rate Problems

805+ (Hard) | Work and Rate Problems hide tags

GianKR

19 Jul 2023, 15:00

20

5

5,050

by: Bunuel

03 Sep 2024, 06:53

The average weight of the students

Poor Quality

Poor Quality hide tags

Gian

10 Aug 2013, 05:55

1

3

4,574

by: maaadhu

10 Aug 2013, 06:09

ER

Is x negative? (1) x^3(1 - x^2) < 0 (2) x^2 - 1 < 0

655-705 (Hard) | Inequalities

655-705 (Hard) | Inequalities hide tags

1, 2

gi

21 Dec 2009, 13:01

307

23

28,935

by: bumpbot

09 Oct 2025, 02:25

ER

Greg and Brian are both at Point A (above). Starting at the

655-705 (Hard) | Distance and Speed Problems

655-705 (Hard) | Distance and Speed Problems hide tags

ghostdude

12 Jul 2013, 01:36

102

17

23,422

by: bumpbot

06 Jan 2026, 19:02

ER

If d represents the hundredths digit and e represents the

705-805 (Hard) | Fractions and Ratios, Number Properties

705-805 (Hard) | Fractions and Ratios, Number Properties hide tags

ghostdude

03 Aug 2012, 00:01

82

16

23,220

by: finisher009

07 Aug 2025, 22:08

ER

In a certain year the United Nations' total expenditures were $1.6 bil

555-605 (Medium) | Percent and Interest Problems

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

GHIBI

11 Sep 2022, 14:44

69

7

24,603

by: bumpbot

19 Aug 2025, 08:14

ER

S is a set of points in the plane. How many distinct triangles can be

Sub 505 (Easy) | Combinations, Coordinate Plane

Sub 505 (Easy) | Combinations, Coordinate Plane hide tags

1, 2

GGUY

15 Mar 2008, 00:41

383

22

66,674

by: Bunuel

31 Jul 2025, 23:54

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Any decimal that has only a finite number of non-zero digits is a term

605-655 (Medium) | Arithmetic, Number Properties

605-655 (Medium) | Arithmetic, Number Properties hide tags

GGMU

03 Jul 2017, 05:12

15

4

6,236

by: bumpbot

27 Nov 2025, 13:48

ER

X is a set containing 7 different numbers. Y is a set containing 6 dif

705-805 (Hard) | Statistics and Sets Problems

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

GGMU

17 Nov 2025, 23:05

38

6

14,493

by: Bunuel

17 Nov 2025, 23:05

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Given that x 5, is x > 1/(x - 5)^2 ? (1) x > 0 (2) x > 10

705-805 (Hard) | Inequalities

705-805 (Hard) | Inequalities hide tags

GGMU

04 Jul 2023, 13:41

56

9

13,408

by: bumpbot

16 Mar 2025, 00:05

ER

What is the value of y?

805+ (Hard) | Algebra +2 tags

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

GGMU

24 Jun 2016, 08:21

143

18

15,020

by: bumpbot

18 Sep 2022, 11:16

What is the number of factors of X

605-655 (Medium) | Multiples and Factors, Number Properties

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

GGMU

04 Sep 2016, 04:16

3

4

2,411

by: bumpbot

29 Sep 2017, 10:50

ER

If rs#0, is 1/r + 1/s = 4 ?

505-555 (Easy) | Algebra

505-555 (Easy) | Algebra hide tags

ggarr

23 Feb 2014, 02:29

2

13

9,296

by: Bunuel

23 Feb 2014, 02:32

ER

Division R of Company Q has 1,000 employees. What is the average (arit

Sub 505 (Easy) | Statistics and Sets Problems, Word Problems

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

getzgetzu

01 Dec 2005, 00:34

47

6

22,841

by: bumpbot

29 Mar 2026, 06:05

ER

If x is an integer, is the median of 5 numbers shown greater than the

655-705 (Hard) | Statistics and Sets Problems

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

getzgetzu

28 Apr 2006, 00:06

402

16

82,533

by: bumpbot

10 Dec 2025, 01:49

ER

If 20 percent of the members in club A are members of club B also,

555-605 (Medium) | Overlapping Sets, Percent and Interest Problems

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

getzgetzu

24 Nov 2005, 02:07

31

7

11,043

by: bumpbot

13 Jul 2025, 09:14

ER

Is mp greater than m?

605-655 (Medium) | Inequalities

605-655 (Medium) | Inequalities hide tags

GetThisDone

10 Oct 2012, 11:09

60

19

15,390

by: Bunuel

07 Nov 2025, 06:25

ER

If m and n are positive integers. What is the units digit of

655-705 (Hard) | Exponents

655-705 (Hard) | Exponents hide tags

gepetow

23 Jul 2013, 15:08

9

4

4,099

by: bumpbot

15 Sep 2016, 03:52

ER

Is y < z ? (1) y + z = 1 (2) y^2 < z^2

605-655 (Medium) | Inequalities

605-655 (Medium) | Inequalities hide tags

GeorgeKo111

03 Jul 2019, 09:25

21

9

5,383

by: bumpbot

08 Feb 2024, 01:22

ER

Ann deposited money into two new accounts, A and B. Account A earns 5

555-605 (Medium) | Percent and Interest Problems

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

geometric

15 Jan 2012, 23:49

80

8

31,296

by: bumpbot

21 Oct 2025, 12:21

ER

If the sum of the three different numbers is 54, what is the largest

505-555 (Easy) | Algebra

505-555 (Easy) | Algebra hide tags

geometric

15 Jan 2012, 23:50

59

9

32,627

by: bumpbot

24 Apr 2025, 01:04

ER

If n is an integer between 10 and 99, is n < 80?

555-605 (Medium) | Number Properties

555-605 (Medium) | Number Properties hide tags

geometric

15 Jan 2012, 23:49

97

11

44,824

by: Bunuel

23 Nov 2024, 11:30

ER

Stations M and N are connected by two separate, straight and parallel

555-605 (Medium) | Work and Rate Problems

555-605 (Medium) | Work and Rate Problems hide tags

geometric

28 Apr 2016, 13:59

4

1

4,918

by: Bunuel

28 Apr 2016, 14:24

ER

In Area X, for three continuous days in a certain month of 2012, five

705-805 (Hard) | Non-Math Related

705-805 (Hard) | Non-Math Related hide tags

gemministorm

22 Nov 2025, 12:59

17

8

1,785

by: RJ3001274402

25 Dec 2025, 08:52

ER

Is the radius of the circle greater than 3?

705-805 (Hard) | Coordinate Plane, Geometry

705-805 (Hard) | Coordinate Plane, Geometry hide tags

gdk800

19 Nov 2010, 04:33

46

9

9,277

by: bumpbot

09 Jan 2021, 22:46

ER

If m and n are both positive, what is the value of m*root(n)

555-605 (Medium) | Number Properties, Roots

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

gb82

16 May 2009, 12:26

50

14

15,721

by: bumpbot

31 Oct 2025, 18:42

ER

Jerry bought 7 clothing items, including a coat, and the sum

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

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

gayathriz

11 Jun 2013, 06:24

34

4

17,642

by: werty_123

01 Feb 2025, 23:58

ER

The figure above shows the shape of a flower bed. If arc QR is a semic

555-605 (Medium) | Geometry

555-605 (Medium) | Geometry hide tags

gayathri

12 Jan 2005, 09:44

61

10

21,846

by: bumpbot

25 Mar 2025, 18:56

ER

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

555-605 (Medium) | Inequalities, Number Properties

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

gayathri

09 Oct 2013, 08:17

68

12

20,722

by: bumpbot

22 May 2024, 04:05

ER

If x is equal to either 2/3 or 3/8 and y is equal to either

655-705 (Hard) | Algebra

655-705 (Hard) | Algebra hide tags

gayathri

17 Mar 2012, 00:54

21

2

6,514

by: bumpbot

26 Feb 2022, 00:54

ER

The numbers of books read by 7 students last year were 10, 5

555-605 (Medium) | Statistics and Sets Problems

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

gautamsubrahmanyam

11 Jun 2010, 07:44

72

12

21,039

by: bumpbot

27 Jan 2026, 06:14

ER

In the xy-plane, line k passes through the point (1, 1) and line m

555-605 (Medium) | Coordinate Plane

555-605 (Medium) | Coordinate Plane hide tags

gautamsubrahmanyam

11 Jun 2010, 07:24

84

14

27,625

by: bumpbot

23 Aug 2023, 13:50

ER

If N is a positive integer what is the remainder when 2^N

555-605 (Medium) | Multiples and Factors +2 tags

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

gaurav_raos

17 Oct 2016, 22:41

28

7

12,814

by: bumpbot

08 Aug 2023, 07:57

ER

|x + 2| = |y + 2| what is the value of x + y ?

705-805 (Hard) | Absolute Values, Inequalities

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

1, 2

gauravsoni

17 Oct 2019, 10:37

183

22

24,689

by: anushree01

08 Nov 2025, 03:36

ER

A barrel contains only red balls, white balls, and brown balls. If two

555-605 (Medium) | Probability

555-605 (Medium) | Probability hide tags

gauravsoni

24 Oct 2017, 21:59

37

8

8,913

by: bumpbot

18 Mar 2025, 05:54

ER

If the point (4,6) lies on line l, and the point (x,3)

Sub 505 (Easy) | Coordinate Plane

Sub 505 (Easy) | Coordinate Plane hide tags

gauravsoni

08 Dec 2015, 03:34

2

5

5,769

by: Bunuel

21 May 2014, 02:19

ER

In the xy-plane, does the line with equation y = 3x + 2 contains the

605-655 (Medium) | Coordinate Plane

605-655 (Medium) | Coordinate Plane hide tags

1, 2

gaurav2k101

13 Jun 2019, 03:48

902

20

116,812

by: bumpbot

26 Dec 2024, 07:46

ER

Barry leaves for the studio

705-805 (Hard) | Distance and Speed Problems

705-805 (Hard) | Distance and Speed Problems hide tags

gaurav245

02 Jul 2014, 04:49

4

5

3,238

by: Bunuel

02 Jul 2014, 05:07

ER

What is the value of 40% of m?

Sub 505 (Easy) | Roots

Sub 505 (Easy) | Roots hide tags

gaoxx385

13 Jul 2022, 01:16

2

4

2,180

by: GMATBusters

01 Sep 2024, 05:02

ER

Is y = 6? (1) y^2 = 36 (2) y^2 - 7y + 6 = 0

505-555 (Easy) | Algebra

505-555 (Easy) | Algebra hide tags

ganand

08 Apr 2017, 03:10

28

5

12,930

by: Bunuel

12 Jul 2025, 23:22

If a, b, c, d are integers. Is standard deviation of a, b, c, d same

555-605 (Medium) | Statistics and Sets Problems

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

ganand

27 Mar 2017, 07:00

3

1

3,390

by: amanvermagmat

15 Jan 2018, 23:33

ER

If k and n are positive integer, is k > 1?

555-605 (Medium) | Multiples and Factors

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

ganand

12 May 2017, 23:23

3

4

3,097

by: ganand

12 May 2017, 23:29

Is x < 1?

555-605 (Medium) | Inequalities

555-605 (Medium) | Inequalities hide tags

ganand

06 May 2017, 05:09

2

3

2,301

by: WiziusCareers1

06 May 2017, 05:52

If xy = -9, what is the value

605-655 (Medium) | Algebra

605-655 (Medium) | Algebra hide tags

ganand

05 May 2017, 06:49

4

2

2,105

by: niks18

05 May 2017, 21:15

ER

Both Betty and Wilma earn annual salaries of more than $50000. Is

555-605 (Medium) | Word Problems

555-605 (Medium) | Word Problems hide tags

gamjatang

16 Dec 2005, 00:17

5

13

8,440

by: Bunuel

08 Jun 2015, 02:48

ER

How many people are in room A ?

Sub 505 (Easy) | Combinations

Sub 505 (Easy) | Combinations hide tags

gameCode

13 Dec 2015, 23:09

15

7

13,190

by: bumpbot

23 Feb 2024, 09:48

ER

If b, c, and d are constants and x^2 + bx + c = (x +

655-705 (Hard) | Algebra

655-705 (Hard) | Algebra hide tags

galiya

05 Aug 2011, 06:16

110

11

14,874

by: bumpbot

20 Jan 2026, 11:44