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

179

15

79,898

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

858

24

189,018

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

488,735

by: bb

29 Aug 2025, 13:27

ER

If a and b are consecutive even integers, is a > b?

605-655 (Medium) | Number Properties

605-655 (Medium) | Number Properties hide tags

Bunuel

21 Aug 2017, 06:02

8

7

6,521

by: bumpbot

15 Aug 2025, 21:42

ER

What is the value of X, if X and Y are two distinct integers and their

705-805 (Hard) | Number Properties

705-805 (Hard) | Number Properties hide tags

Bunuel

14 Mar 2016, 08:07

12

4

18,295

by: bumpbot

15 Aug 2025, 13:19

ER

What is the result when x is rounded to the nearest hundredt

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

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

nitindas

03 Aug 2009, 12:58

223

15

41,375

by: bumpbot

13 Aug 2025, 13:48

ER

If x and y are nonzero integers, is x/y an integer?

505-555 (Easy) | Number Properties

505-555 (Easy) | Number Properties hide tags

dzodzo85

03 Apr 2012, 01:41

53

7

35,196

by: bumpbot

12 Aug 2025, 02:03

ER

What is the greatest common divisor of two positive integers a and b?

705-805 (Hard) | Number Properties

705-805 (Hard) | Number Properties hide tags

chetan2u

20 Jan 2015, 12:59

14

5

5,802

by: bumpbot

11 Aug 2025, 17:11

ER

Is the positive integer n a multiple of 24 ?

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

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

MHIKER

23 Feb 2011, 00:35

170

12

37,820

by: bumpbot

11 Aug 2025, 05:46

ER

If p, x, and y are positive integers, y is odd, and p = x^2

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

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

1, 2

netcaesar

14 Aug 2009, 12:49

836

29

57,302

by: gmatchile

11 Aug 2025, 00:22

ER

In the diagram above each of the letters represents an odd single-digi

805+ (Hard) | Arithmetic, Number Properties

805+ (Hard) | Arithmetic, Number Properties hide tags

Bunuel

10 Apr 2017, 02:29

24

8

3,392

by: SOOD1

10 Aug 2025, 23:58

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If a, b, and c are positive integers, is 2a/(bc) ?

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

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

Bunuel

01 Feb 2021, 01:15

11

2

2,794

by: bumpbot

09 Aug 2025, 11:58

ER

If m, p, and t are positive integers and m<p<t, is the

655-705 (Hard) | Number Properties

655-705 (Hard) | Number Properties hide tags

h2polo

16 Nov 2009, 08:01

231

16

43,605

by: bumpbot

08 Aug 2025, 22:32

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

23,242

by: finisher009

07 Aug 2025, 22:08

ER

If f and g are integers, is fg + 2 prime?

655-705 (Hard) | Number Properties

655-705 (Hard) | Number Properties hide tags

aditi1903

12 Oct 2012, 00:40

15

8

8,547

by: bumpbot

07 Aug 2025, 06:48

ER

Data Sufficiency Pack 2, Question 2) Is A > B?

655-705 (Hard) | Number Properties

655-705 (Hard) | Number Properties hide tags

EMPOWERgmatRichC

01 Nov 2015, 17:33

9

7

3,646

by: bumpbot

05 Aug 2025, 07:12

ER

If a and b are single-digit positive numbers and a/b is NOT a recurrin

705-805 (Hard) | Inequalities +2 tags

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

Bunuel

29 May 2015, 06:22

33

6

7,400

by: bumpbot

05 Aug 2025, 04:39

ER

What is the greatest common factor of x and y ?

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

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

1, 2

maryann

13 Feb 2011, 09:15

174

27

35,678

by: bumpbot

05 Aug 2025, 04:09

ER

What is the sum of a certain pair of consecutive odd integers?

505-555 (Easy) | Number Properties

505-555 (Easy) | Number Properties hide tags

Bunuel

25 Oct 2015, 09:18

175

16

40,457

by: bumpbot

04 Aug 2025, 14:26

ER

If the least common multiple of integers x and y is 840,

605-655 (Medium) | Arithmetic, Number Properties

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

1, 2

rxs0005

03 Dec 2010, 18:09

81

24

22,286

by: bumpbot

03 Aug 2025, 18:52

ER

If z1, z2, z3,..., zn is a series of consecutive positive integers, is

705-805 (Hard) | Number Properties, Sequences

705-805 (Hard) | Number Properties, Sequences hide tags

TheRob

13 Nov 2022, 04:18

97

13

20,940

by: bumpbot

03 Aug 2025, 15:05

ER

25 integers are written on a board. Are there at least two consecutive

805+ (Hard) | Number Properties, Statistics and Sets Problems

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

Bunuel

08 Apr 2015, 05:27

40

15

10,132

by: bumpbot

03 Aug 2025, 13:32

ER

If y is a positive integer, is y prime?

655-705 (Hard) | Number Properties

655-705 (Hard) | Number Properties hide tags

LM

24 Oct 2012, 05:45

56

13

9,129

by: bumpbot

02 Aug 2025, 13:31

ER

If q is a positive integer less than 17 and r is the remainder when 17

655-705 (Hard) | Number Properties, Remainders

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

rraggio

13 Sep 2010, 08:37

28

4

18,067

by: bumpbot

02 Aug 2025, 10:53

ER

Find the maximum value of a*b? 1) a and b are prime numbers 2) a+b =

555-605 (Medium) | Min-Max Problems, Number Properties

555-605 (Medium) | Min-Max Problems, Number Properties hide tags

GMATinsight

16 Aug 2018, 05:16

29

10

6,507

by: srik410

02 Aug 2025, 03:25

ER

Is n divisible 35? 1) 4n^2/15 = Integer 2)2n/7=Integer

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

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

GMATinsight

26 Nov 2020, 22:36

13

5

1,849

by: bumpbot

31 Jul 2025, 20:08

ER

a, b, c, and d are positive integers. If (a + b)(c d) = r, where

655-705 (Hard) | Number Properties

655-705 (Hard) | Number Properties hide tags

sambam

16 Jan 2013, 14:31

62

11

18,277

by: bumpbot

30 Jul 2025, 15:09

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

9,420

by: bumpbot

30 Jul 2025, 03:06

ER

Is x^y > 0 ? (1) y = 2 (2) x is an integer

605-655 (Medium) | Inequalities, Number Properties

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

Bunuel

23 Sep 2015, 03:36

38

9

7,637

by: bumpbot

29 Jul 2025, 23:30

ER

If d is the product of exactly two distinct prime factors, what is the

655-705 (Hard) | Number Properties

655-705 (Hard) | Number Properties hide tags

Bunuel

29 Apr 2022, 01:30

6

4

3,668

by: bumpbot

29 Jul 2025, 12:58

ER

If a and b are positive integers, is (ab)^b+1 − a^a+1 odd? (1) 2a + 3

805+ (Hard) | Exponents, Number Properties

805+ (Hard) | Exponents, Number Properties hide tags

Bunuel

17 Nov 2021, 04:30

7

3

3,339

by: bumpbot

29 Jul 2025, 10:20

ER

What is the value of x? (1) √x^4 = 9 (2) √x^2 = -x

555-605 (Medium) | Algebra +2 tags

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

Bunuel

13 Aug 2018, 04:03

35

11

8,800

by: bumpbot

29 Jul 2025, 06:42

If x is even and b is odd, is

805+ (Hard) | Exponents, Number Properties

805+ (Hard) | Exponents, Number Properties hide tags

gmatophobia

05 May 2023, 11:25

8

5

1,477

by: gmatophobia

28 Jul 2025, 22:44

ER

Each of the letters in the table above represents one of the numbers 1

605-655 (Medium) | Graphs and Illustrations, Number Properties

605-655 (Medium) | Graphs and Illustrations, Number Properties hide tags

GMATBusters

15 Dec 2018, 10:26

19

9

6,737

by: bumpbot

28 Jul 2025, 13:34

ER

a, b, and c are three integers such that a and b are less

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

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

Carcass

18 Apr 2012, 06:05

25

11

7,804

by: bumpbot

28 Jul 2025, 11:31

ER

450 when multiplied with x results in the square of an integer. Find x

705-805 (Hard) | Number Properties

705-805 (Hard) | Number Properties hide tags

GMATinsight

21 Oct 2020, 07:26

8

5

1,531

by: bumpbot

27 Jul 2025, 05:22

ER

If x, y, and z are positive integers, where x is an odd number and

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

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

Bunuel

21 Jun 2023, 01:31

10

4

2,211

by: bumpbot

27 Jul 2025, 03:25

ER

Is x a prime number? (2) y^2 = x (1) 2x/x^2 = 1

655-705 (Hard) | Algebra, Number Properties

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

Bunuel

16 Feb 2015, 06:54

39

13

7,842

by: samriddhi1234

26 Jul 2025, 07:48

ER

If a < b, is a < c?

555-605 (Medium) | Arithmetic, Number Properties

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

EMPOWERgmatRichC

22 Oct 2019, 23:17

5

4,026

by: bumpbot

26 Jul 2025, 05:22

ER

If N is a positive integer

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

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

EgmatQuantExpert

13 Aug 2018, 02:27

31

10

7,159

by: bumpbot

26 Jul 2025, 00:16

ER

If a, b, and c are consecutive integers and 0 < a < b < c, is the prod

655-705 (Hard) | Number Properties

655-705 (Hard) | Number Properties hide tags

Carcass

27 Jul 2017, 08:18

185

15

37,255

by: bumpbot

25 Jul 2025, 00:40

What is the value of the integer P?

555-605 (Medium) | Number Properties

555-605 (Medium) | Number Properties hide tags

twoface07

13 Aug 2022, 22:48

4

3

2,715

by: bumpbot

24 Jul 2025, 04:23

ER

If x = 0.abcd where a, b, c and d are single-digits, then find the val

705-805 (Hard) | Number Properties

705-805 (Hard) | Number Properties hide tags

GMATinsight

04 Mar 2021, 20:32

5

7

2,162

by: bumpbot

23 Jul 2025, 00:34

ER

Does 5^x = 7^y? (1) x > y > 0 (2) x and y are both even.

705-805 (Hard) | Number Properties

705-805 (Hard) | Number Properties hide tags

BillyZ

08 Feb 2017, 01:28

21

10

4,820

by: bumpbot

23 Jul 2025, 00:29

ER

How many integers are greater than x, but less than y?

605-655 (Medium) | Number Properties

605-655 (Medium) | Number Properties hide tags

Bunuel

25 Nov 2014, 08:26

21

8

8,239

by: bumpbot

21 Jul 2025, 03:29

ER

Given that a, b, c, and, d are non-negative integers, is the

655-705 (Hard) | Algebra, Number Properties

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

enigma123

09 May 2020, 12:09

63

12

17,182

by: bumpbot

21 Jul 2025, 02:09

ER

If n is a positive integer greater than 1, is (n + 11)^(1/2) = n^(1/2)

655-705 (Hard) | Algebra, Number Properties

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

Viserion99

24 May 2018, 21:34

28

15

5,618

by: bumpbot

19 Jul 2025, 18:11

ER

If a, b, and c are positive integers, with a < b < c, are a, b, and c

655-705 (Hard) | Algebra, Number Properties

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

SMAbbas

02 Oct 2020, 02:07

86

13

23,214

by: bumpbot

19 Jul 2025, 18:04

ER

If a and b are positive itegers, what is the value of a + b?

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

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

Stiv

02 Jul 2012, 03:47

62

8

16,374

by: bumpbot

19 Jul 2025, 15:43

ER

In the correctly-worked multiplication problem above, each symbol repr

805+ (Hard) | Arithmetic, Number Properties

805+ (Hard) | Arithmetic, Number Properties hide tags

Bunuel

06 May 2015, 02:36

89

7

15,033

by: bumpbot

18 Jul 2025, 05:56

ER

If x is an integer greater than 1, is x equal to the 12th

655-705 (Hard) | Exponents, Number Properties

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

bhupi

23 Jun 2012, 10:44

443

18

49,698

by: bumpbot

18 Jul 2025, 05:55

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

23,730

by: bumpbot

18 Jul 2025, 03:35

ER

If N is a positive three-digit number that is greater than 2

805+ (Hard) | Number Properties

805+ (Hard) | Number Properties hide tags

xhimi

09 Dec 2013, 04:54

154

14

22,455

by: bumpbot

17 Jul 2025, 21:45