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

78,886

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

188,620

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

488,094

by: bb

29 Aug 2025, 13:27

ER

What is the greatest common divisor of positive integers m

505-555 (Easy) | Multiples and Factors, Number Properties

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

eybrj2

29 Mar 2012, 00:38

64

6

19,457

by: bumpbot

01 Oct 2024, 03:25

ER

A cube is painted with blue and red color such that each color is pain

655-705 (Hard) | Geometry

655-705 (Hard) | Geometry hide tags

pran21

02 Sep 2014, 04:05

18

6

22,046

by: bumpbot

30 Sep 2024, 04:42

ER

If n is an integer, what is the units digit of x?

605-655 (Medium) | Exponents, Fractions and Ratios

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

ferrarih

30 Jun 2012, 08:00

60

6

11,114

by: bumpbot

30 Sep 2024, 01:47

ER

If P is a positive integer, then P4 has how many digits?

605-655 (Medium) | Number Properties

605-655 (Medium) | Number Properties hide tags

Shrey08

24 Jul 2021, 05:16

3

6

3,933

by: bumpbot

29 Sep 2024, 06:43

ER

Is the positive integer r a multiple of the positive integer s?

605-655 (Medium) | Multiples and Factors

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

Bunuel

15 Jul 2019, 00:56

16

6

3,322

by: bumpbot

28 Sep 2024, 07:29

ER

If q is an integer, then q is divisible by how many positive

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

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

notrandom

04 Nov 2013, 23:05

19

6

4,666

by: bumpbot

26 Sep 2024, 02:20

ER

A Town T has 40,000 residents, 25 percent of whom are age 60

555-605 (Medium) | Overlapping Sets

555-605 (Medium) | Overlapping Sets hide tags

enigma123

26 Feb 2012, 17:43

14

6

8,897

by: bumpbot

24 Sep 2024, 03:49

ER

A certain business school has a student body of 2,000 students, 45% of

555-605 (Medium) | Overlapping Sets

555-605 (Medium) | Overlapping Sets hide tags

Bunuel

17 Feb 2015, 09:21

12

6

5,131

by: bumpbot

24 Sep 2024, 03:45

ER

The figure above shows the top of a circular cake with a slice removed

Sub 505 (Easy) | Geometry

Sub 505 (Easy) | Geometry hide tags

Bunuel

26 Apr 2019, 07:32

31

6

9,745

by: bumpbot

21 Sep 2024, 13:44

ER

In an office that employs 120 people, m% of the employees are male, an

555-605 (Medium) | Overlapping Sets

555-605 (Medium) | Overlapping Sets hide tags

Bunuel

17 Feb 2015, 09:13

16

6

5,596

by: bumpbot

20 Sep 2024, 03:14

ER

All attendees at a university gathering are faculty or alumni of the u

605-655 (Medium) | Overlapping Sets

605-655 (Medium) | Overlapping Sets hide tags

Bunuel

24 Sep 2015, 22:57

18

6

5,776

by: bumpbot

17 Sep 2024, 04:32

ER

How many prime factors of x are also prime factors of y?

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

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

Bunuel

25 Jul 2016, 10:17

4

6

2,600

by: bumpbot

16 Sep 2024, 18:56

ER

What is the probability that it will rain on each of the next 3 days i

555-605 (Medium) | Probability

555-605 (Medium) | Probability hide tags

Bunuel

14 Aug 2017, 01:06

43

6

23,620

by: bumpbot

16 Sep 2024, 13:57

ER

In City X, a television ratings service estimates that the number of

655-705 (Hard) | Percent and Interest Problems, Word Problems

655-705 (Hard) | Percent and Interest Problems, Word Problems hide tags

eyunni

27 Oct 2007, 12:33

8

6

8,091

by: bumpbot

15 Sep 2024, 21:55

ER

If a and b are integers and a is even, what is the value of a - b?

555-605 (Medium) | Number Properties

555-605 (Medium) | Number Properties hide tags

aashaybaindurgmat

15 Oct 2017, 01:37

7

6

7,686

by: bumpbot

15 Sep 2024, 21:51

ER

If z is an integer, is z prime?

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

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

energetics

09 May 2019, 14:57

20

6

8,992

by: bumpbot

15 Sep 2024, 21:50

ER

If n is a positive integer, what is the remainder when (7^n + 5) is di

605-655 (Medium) | Exponents, Remainders

605-655 (Medium) | Exponents, Remainders hide tags

Bunuel

31 Aug 2020, 00:13

18

6

8,728

by: bumpbot

14 Sep 2024, 09:53

ER

The average of 6 numbers is 8. One new number is now added

505-555 (Easy) | Statistics and Sets Problems

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

EgmatQuantExpert

14 Sep 2024, 03:07

9

6

4,685

by: bumpbot

14 Sep 2024, 02:50

ER

All of the tickets for 2 music concerts, X and Y, were either purchase

605-655 (Medium) | Word Problems

605-655 (Medium) | Word Problems hide tags

Bunuel

02 Nov 2015, 08:33

6

8,564

by: bumpbot

06 Sep 2024, 23:58

ER

Every day Guy takes the same N sandwiches to work. Guy takes to work

655-705 (Hard) | Overlapping Sets

655-705 (Hard) | Overlapping Sets hide tags

Bunuel

03 Jun 2021, 01:30

10

6

3,377

by: bumpbot

06 Sep 2024, 11:25

ER

Y and Z are both positive numbers less than 1. Is Y > Z ?

655-705 (Hard) | Fractions and Ratios, Number Properties

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

Bunuel

03 Jun 2018, 11:12

12

6

3,201

by: dhwanit2412

05 Sep 2024, 07:14

ER

A coin purse contains 13 coins, each worth 1, 5, 10, or 25 cents; the

805+ (Hard) | Word Problems

805+ (Hard) | Word Problems hide tags

Bunuel

01 May 2015, 02:20

33

6

7,416

by: bumpbot

31 Aug 2024, 03:42

ER

If x and y are positive integers, what is the value of xy?

705-805 (Hard) | Algebra

705-805 (Hard) | Algebra hide tags

Bunuel

29 Sep 2021, 01:00

15

6

5,300

by: unraveled

27 Aug 2024, 08:54

ER

If x and y are integers, is y an even integer?

805+ (Hard) | Algebra

805+ (Hard) | Algebra hide tags

Maksym

05 Jul 2014, 05:11

33

6

7,970

by: Bunuel

25 Aug 2024, 05:51

ER

A call to Rosie’s Psychic Hotline costs $5.99 for the first 2 minutes

605-655 (Medium) | Word Problems

605-655 (Medium) | Word Problems hide tags

Bunuel

26 Aug 2016, 07:19

10

6

7,557

by: pratiksha1998

24 Aug 2024, 10:22

ER

In a school election, if each of the 900 voters voted for either Edith

555-605 (Medium) | Word Problems

555-605 (Medium) | Word Problems hide tags

Bunuel

15 Dec 2014, 09:38

29

6

15,457

by: bumpbot

24 Aug 2024, 04:41

ER

12 Days of Christmas GMAT Competition - Day 2: P is a positive integer

655-705 (Hard) | Multiples and Factors

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

Bunuel

15 Dec 2021, 07:00

18

6

6,077

by: bumpbot

19 Aug 2024, 10:25

ER

If a, b, c, and d are integers where 0 < a < b < c < d, what is the va

655-705 (Hard) | Number Properties

655-705 (Hard) | Number Properties hide tags

unraveled

21 Aug 2019, 01:11

11

6

4,047

by: bumpbot

18 Aug 2024, 23:04

ER

Find the units digit of 556^17n + 339^(5m+15n), where m and n are

655-705 (Hard) | Number Properties

655-705 (Hard) | Number Properties hide tags

EgmatQuantExpert

16 Dec 2016, 02:03

11

6

3,759

by: bumpbot

18 Aug 2024, 00:13

What is the value of abcd+a+b+c+d ?

555-605 (Medium) | Algebra

555-605 (Medium) | Algebra hide tags

alex90

25 Apr 2013, 05:31

73

6

13,672

by: bumpbot

17 Aug 2024, 03:27

ER

If x, y and z are positive single-digit integers and x^y = z. What is

655-705 (Hard) | Number Properties

655-705 (Hard) | Number Properties hide tags

Nikkb

19 Sep 2017, 02:16

7

6

2,472

by: bumpbot

16 Aug 2024, 07:50

ER

A swim club that sold only individual and family memberships charged $

505-555 (Easy) | Word Problems

505-555 (Easy) | Word Problems hide tags

Bunuel

18 Dec 2014, 07:17

29

6

14,340

by: bumpbot

11 Aug 2024, 13:54

ER

If x, y, and z are three odd integers such that x < y < z and x + y +

655-705 (Hard) | Number Properties

655-705 (Hard) | Number Properties hide tags

Bunuel

07 May 2018, 03:00

4

6

2,151

by: bumpbot

11 Aug 2024, 02:51

ER

Is integer x prime?

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

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

Bunuel

23 Apr 2015, 03:44

15

6

5,930

by: bumpbot

08 Aug 2024, 22:41

ER

In the above sequence, x and y are integers, and the numbers are arran

555-605 (Medium) | Statistics and Sets Problems

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

Bunuel

02 Dec 2019, 00:42

12

6

2,936

by: bumpbot

08 Aug 2024, 09:31

ER

What is the value of |4−|3−x||? (1) |x−4|=6 (2) |6−x|=4

705-805 (Hard) | Absolute Values

705-805 (Hard) | Absolute Values hide tags

Bunuel

28 Apr 2017, 03:00

26

6

6,609

by: bumpbot

06 Aug 2024, 11:08

ER

What is the tenths digit of the number d when it is written as a decim

Sub 505 (Easy) | Fractions and Ratios

Sub 505 (Easy) | Fractions and Ratios hide tags

nalinnair

23 May 2016, 00:01

11

6

16,444

by: bumpbot

03 Aug 2024, 10:09

ER

In a sequence of numbers in which each term after the first term is 1

505-555 (Easy) | Sequences

505-555 (Easy) | Sequences hide tags

Bunuel

30 Aug 2017, 06:02

15

6

10,843

by: bumpbot

02 Aug 2024, 02:21

ER

What is the units digit of x² - y² ?

805+ (Hard) | Algebra, Multiples and Factors

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

BrentGMATPrepNow

15 Sep 2022, 07:24

13

6

3,252

by: bumpbot

31 Jul 2024, 22:00

ER

What is the remainder when X is divided by 3, where 3 is not

655-705 (Hard) | Multiples and Factors, Remainders

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

ConnectTheDots

10 Apr 2014, 00:05

5

6

3,743

by: samarpan.g28

30 Jul 2024, 06:58

ER

Company R's annual profit has increased by a constant amount each cale

555-605 (Medium) | Word Problems

555-605 (Medium) | Word Problems hide tags

Bunuel

26 Jun 2018, 06:19

18

6

8,826

by: bumpbot

30 Jul 2024, 00:24

ER

In the figure above, what is the area of the circular region with cent

505-555 (Easy) | Geometry

505-555 (Easy) | Geometry hide tags

Bunuel

17 Dec 2014, 08:05

4

6

6,040

by: bumpbot

27 Jul 2024, 03:34

ER

If x and y are positive integer, what is the remainder when

605-655 (Medium) | Number Properties

605-655 (Medium) | Number Properties hide tags

gmat620

02 Nov 2009, 07:15

27

6

6,258

by: bumpbot

25 Jul 2024, 20:59

ER

If Jessica drives her car for 2.5 hours at a constant speed,

555-605 (Medium) | Distance and Speed Problems

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

sanjoo

10 Oct 2012, 05:08

2

6

5,985

by: 1616

21 Jul 2024, 01:01

ER

If M = 5.abc then what is the value of b + c? (1) The last two digits

805+ (Hard) | Algebra

805+ (Hard) | Algebra hide tags

gmatophobia

19 Jan 2022, 00:19

9

6

1,955

by: anish0953

18 Jul 2024, 13:44

ER

What is the median number of audience members attending a showing of a

555-605 (Medium) | Statistics and Sets Problems

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

EMPOWERgmatRichC

03 Oct 2019, 11:43

7

6

2,478

by: bumpbot

18 Jul 2024, 08:59

ER

The average of a series of consecutive integers is an even integer

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

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

cgalan6

02 Aug 2017, 12:04

17

6

5,168

by: bumpbot

18 Jul 2024, 06:21

ER

If M and N are positive integers, is (MN)/15 an integer

655-705 (Hard) | Multiples and Factors

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

Bunuel

13 Mar 2020, 01:48

23

6

6,808

by: bumpbot

15 Jul 2024, 06:43

ER

At a bakery, cakes are sold every day for a certain number of days. If

805+ (Hard) | Statistics and Sets Problems

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

Bunuel

14 May 2017, 10:52

15

6

5,171

by: bumpbot

14 Jul 2024, 06:49

ER

If integer p is a factor of 42, is p a prime number?

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

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

Bunuel

23 May 2020, 07:36

23

6

10,695

by: bumpbot

13 Jul 2024, 01:42