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

78,660

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

188,480

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

487,876

by: bb

29 Aug 2025, 13:27

ER

The fire department has two classes of employees, responders

705-805 (Hard) | Overlapping Sets

705-805 (Hard) | Overlapping Sets hide tags

MOKSH

18 Dec 2012, 07:06

25

5

10,618

by: Demonicgod

15 Oct 2025, 19:15

ER

A company bought some desks at a price of $150 each and some chairs at

555-605 (Medium) | Word Problems

555-605 (Medium) | Word Problems hide tags

mokap25

29 May 2012, 22:30

36

9

14,933

by: bumpbot

08 Jun 2025, 16:14

ER

Is |x-1| < 1?

705-805 (Hard) | Absolute Values, Inequalities

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

mokap25

17 Aug 2011, 05:36

10

5

4,149

by: Bunuel

13 Jun 2017, 23:08

ER

If (x + y)/z > 0, is x < 0?

555-605 (Medium) | Inequalities

555-605 (Medium) | Inequalities hide tags

mojorising800

09 Jun 2010, 12:01

56

5

10,653

by: bumpbot

06 Jan 2026, 08:35

ER

If Jim earns x dollars per hour, it will take him 4 hours to

605-655 (Medium) | Word Problems

605-655 (Medium) | Word Problems hide tags

1, 2

mojorising800

05 Jul 2011, 14:23

50

20

19,878

by: bumpbot

17 Dec 2025, 01:31

ER

Is x > y?

555-605 (Medium) | Absolute Values

555-605 (Medium) | Absolute Values hide tags

mojorising800

05 Jul 2011, 02:46

7

4

4,004

by: bumpbot

28 Jul 2025, 06:48

ER

Set A consists of all positive integers less than 100; Set B

555-605 (Medium) | Statistics and Sets Problems

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

mohnish104

29 Nov 2013, 02:54

18

3

17,466

by: bumpbot

27 Jan 2026, 04:16

ER

If yz ≠ 0, is (x–y+z)/2z < (x/2z)–(y/2z)–(x/y)?

555-605 (Medium) | Inequalities

555-605 (Medium) | Inequalities hide tags

mohdabbas5

13 Mar 2017, 11:05

11

13

7,035

by: bumpbot

11 Jul 2024, 00:22

ER

How much was the original price of a car, which was sold for

505-555 (Easy) | Percent and Interest Problems

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

mohan514

08 Sep 2011, 18:54

2

14

5,175

by: bumpbot

09 Dec 2025, 05:16

ER

Is t^2 > t/3?

705-805 (Hard) | Absolute Values, Inequalities

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

moderife

24 Dec 2012, 03:08

10

13

5,775

by: exc4libur

26 Dec 2019, 09:29

ER

If n is a positive integer, what is the greatest common factor

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

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

Mo2men

01 Aug 2018, 20:50

66

9

9,392

by: bumpbot

30 Jul 2025, 03:06

ER

Is q < 0?

655-705 (Hard) | Arithmetic

655-705 (Hard) | Arithmetic hide tags

Mo2men

28 Dec 2018, 21:46

5

3

3,025

by: bumpbot

07 Sep 2024, 08:58

ER

If c = 3.905 X 10^x and x is a negative integer, what is x?

555-605 (Medium) | Exponents, Inequalities

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

Mo2men

18 Jul 2017, 09:18

5

2

2,240

by: bumpbot

17 Jan 2024, 21:59

ER

If P and Q are positive integers, what is the number of factors of X?

605-655 (Medium) | Multiples and Factors

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

Mo2men

23 Jun 2019, 10:08

8

7

3,819

by: bumpbot

16 Nov 2022, 07:13

ER

If n and m are positive integers, is m a factor of n?

Sub 505 (Easy) | Exponents, Multiples and Factors

Sub 505 (Easy) | Exponents, Multiples and Factors hide tags

Mo2men

14 Jan 2017, 11:22

14

5

5,200

by: Bunuel

10 Nov 2022, 03:38

Is b even?

555-605 (Medium) | Number Properties

555-605 (Medium) | Number Properties hide tags

Mo2men

26 Dec 2018, 14:02

3

2,097

by: progressgmat

26 Dec 2018, 15:12

ER

If a, b, c, and d are all positive integers, is c divisible by a/d?

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

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

mniyer

22 Dec 2013, 11:02

22

11

4,707

by: bumpbot

24 Oct 2024, 20:47

ER

If, in the addition problem above, a, b, c, d, e, f, x, y, a

805+ (Hard) | Arithmetic

805+ (Hard) | Arithmetic hide tags

1, 2

mn2010

18 Jul 2010, 15:59

470

22

58,456

by: Gmat860sanskar

30 Mar 2026, 12:11

ER

Is |x| < 1 ? (1) |x + 1| = 2|x – 1| (2) |x – 3| > 0

805+ (Hard) | Absolute Values, Inequalities

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

mn2010

16 Jun 2021, 01:32

114

8

18,314

by: bumpbot

14 Oct 2025, 05:57

ER

What does s^2t-st^2 equal given that s and t are positive integ

655-705 (Hard) | Arithmetic, Number Properties

655-705 (Hard) | Arithmetic, Number Properties hide tags

mmelendez

13 Nov 2015, 16:21

4

6

2,791

by: bumpbot

30 Jun 2024, 05:53

ER

At a certain library, 1600 books were checked out by patrons yesterday

705-805 (Hard) | Word Problems

705-805 (Hard) | Word Problems hide tags

mmdfl

04 Feb 2024, 11:17

156

12

16,140

by: Bunuel

22 Mar 2026, 11:59

ER

The numbers above form a sequence, t1, t2, and t3 , which is

705-805 (Hard) | Sequences

705-805 (Hard) | Sequences hide tags

mmcooley33

13 Dec 2010, 07:59

57

6

10,427

by: bumpbot

04 Jul 2025, 13:09

ER

Set A, Set B, and Set C each contain only positive integers.

805+ (Hard) | Statistics and Sets Problems

805+ (Hard) | Statistics and Sets Problems hide tags

mm007

20 Dec 2006, 19:38

81

16

20,309

by: bumpbot

26 Jan 2026, 22:40

ER

If a and b are integers, and a not= b, is |a|b > 0? (1)

655-705 (Hard) | Absolute Values, Inequalities

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

mm007

20 Dec 2006, 15:21

82

14

31,838

by: bumpbot

22 Dec 2025, 14:25

ER

For non-zero integers a, b, c and d, is ab/cd positive?

655-705 (Hard) | Number Properties

655-705 (Hard) | Number Properties hide tags

mm007

09 Aug 2013, 03:09

107

18

35,256

by: bumpbot

21 Oct 2025, 21:45

ER

Of all the attendees at a dinner party, 40% were women. If

805+ (Hard) | Overlapping Sets

805+ (Hard) | Overlapping Sets hide tags

mm007

20 Dec 2006, 14:03

208

14

33,251

by: bumpbot

17 Jun 2025, 00:14

ER

If x, y, and z are positive integers such that x < y < z is x a factor

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

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

mm007

20 Dec 2006, 16:05

154

19

36,647

by: bumpbot

10 Feb 2025, 22:31

ER

A certain game board is in the shape of a non-convex

Poor Quality

Poor Quality hide tags

mm007

20 Dec 2006, 15:41

58

17

15,179

by: IanStewart

04 Apr 2020, 07:43

ER

Pete is arranging layer upon layer of lines of brick to build a wall.

705-805 (Hard) | Word Problems

705-805 (Hard) | Word Problems hide tags

mlinsky2828

26 Jan 2026, 20:57

7

6

866

by: MartyMurray

27 Jan 2026, 10:00

ER

If x and y are distinct non-negative integers, what is the value of x^

Poor Quality

Poor Quality hide tags

mkortepe

02 Dec 2018, 19:23

3

1

1,530

by: chetan2u

02 Dec 2018, 21:41

ER

If Company M ordered a total of 50 computers and printers an

555-605 (Medium) | Word Problems

555-605 (Medium) | Word Problems hide tags

mjg2110

21 Jan 2016, 05:34

87

16

27,069

by: bumpbot

19 Mar 2026, 11:51

ER

Leo invested a certain amount of money for one year. He invested $1,00

Poor Quality

Poor Quality hide tags

mitko20m

15 Jul 2016, 13:54

32

9

16,217

by: Bunuel

24 Dec 2020, 00:12

ER

What is the remainder when n is divided by 15?

Poor Quality

Poor Quality hide tags

mithun2vrs

27 Apr 2012, 11:03

9

5

9,885

by: Bunuel

12 Jun 2012, 04:56

ER

In the xy-plane, at what two points does the graph of y=(x+a)(x+b)

555-605 (Medium) | Coordinate Plane

555-605 (Medium) | Coordinate Plane hide tags

1, 2

misterJJ2u

05 Jun 2019, 07:29

937

37

196,202

by: bumpbot

18 Sep 2025, 02:24

ER

Is abc = 0? 1) a^2 = 2a

555-605 (Medium) | Algebra

555-605 (Medium) | Algebra hide tags

misterJJ2u

10 Jan 2008, 00:13

1

5,538

by: Bunuel

26 Oct 2023, 09:00

ER

A certain computer has 2,000 megabytes of memory

705-805 (Hard) | Word Problems

705-805 (Hard) | Word Problems hide tags

MisterEko

31 Oct 2010, 17:59

8

6

4,373

by: bumpbot

27 Jan 2025, 11:00

ER

If 6xy = x^2y + 9y, what is the value of xy?

655-705 (Hard) | Algebra

655-705 (Hard) | Algebra hide tags

MisterEko

16 Jul 2015, 01:55

91

15

27,885

by: bumpbot

06 Jan 2024, 03:18

ER

Four points that form a polygon lie on the circumference of

Sub 505 (Easy) | Geometry

Sub 505 (Easy) | Geometry hide tags

mist3rh

12 Mar 2012, 07:07

13

3

6,442

by: bumpbot

20 Sep 2023, 22:46

ER

If set S consists of even number of integers, is the median

805+ (Hard) | Statistics and Sets Problems

805+ (Hard) | Statistics and Sets Problems hide tags

1, 2

mirhaque

21 Feb 2005, 05:53

82

28

23,110

by: bumpbot

23 Sep 2025, 23:03

ER

A supplier sold two types of water heaters in 2017, tankless water hea

505-555 (Easy) | Percent and Interest Problems

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

mira93

03 Jul 2020, 05:09

15

3

4,860

by: bumpbot

05 Dec 2022, 04:09

ER

What is the area of right triangle XYZ?

555-605 (Medium) | Geometry

555-605 (Medium) | Geometry hide tags

minwoswoh

29 Dec 2014, 21:47

51

13

18,159

by: bumpbot

03 Apr 2024, 04:06

ER

For a wedding reception, a banquet facility charges a flat rate of $20

Sub 505 (Easy) | Word Problems

Sub 505 (Easy) | Word Problems hide tags

minwoswoh

13 Dec 2014, 16:30

6

5

7,285

by: mangamma

11 Dec 2019, 07:48

ER

N is a real number. True or False: | N | <5

655-705 (Hard) | Absolute Values

655-705 (Hard) | Absolute Values hide tags

minustark

29 Sep 2019, 15:16

5

3

1,909

by: bumpbot

07 Jan 2024, 15:01

ER

x is a number not in the set {−1,0,1}. Of the elements {x^4, x^5, x^6

655-705 (Hard) | Exponents, Number Properties

655-705 (Hard) | Exponents, Number Properties hide tags

minustark

24 Sep 2019, 12:38

6

5

2,724

by: bumpbot

27 Jul 2023, 21:16

ER

How many solutions does the equation |x−A|=B have?

605-655 (Medium) | Inequalities

605-655 (Medium) | Inequalities hide tags

minustark

24 Sep 2019, 18:22

10

7

2,752

by: abhishekmayank

28 Apr 2022, 23:18

ER

Using the following statements, Solve for x.

555-605 (Medium) | Absolute Values

555-605 (Medium) | Absolute Values hide tags

minustark

28 Sep 2019, 15:23

6

2

1,899

by: v12345

17 Jul 2020, 22:53

ER

If X, Y, and Z are points on the number line, what is the distance bet

505-555 (Easy) | Number Properties

505-555 (Easy) | Number Properties hide tags

minustark

29 Oct 2019, 20:29

1

1,680

by: AndrewN

29 Oct 2019, 17:55

Is |a - b| < |a - c|?

655-705 (Hard) | Absolute Values, Inequalities

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

minustark

28 Sep 2019, 15:37

2

1,190

by: almogsr

28 Sep 2019, 22:54

True or false: N is a positive number.

655-705 (Hard) | Inequalities

655-705 (Hard) | Inequalities hide tags

minustark

25 Sep 2019, 07:23

2

3

1,907

by: globaldesi

25 Sep 2019, 20:22

ER

Find the area of a square?

555-605 (Medium) | Geometry

555-605 (Medium) | Geometry hide tags

minustark

21 Sep 2019, 02:26

4

870

by: EMPOWERgmatRichC

20 Sep 2019, 15:28