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

79,896

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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

189,017

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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

488,734

by: bb

29 Aug 2025, 13:27

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Is the positive integer P prime?

555-605 (Medium) | Number Properties

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alphonsa

15 Aug 2014, 08:51

8

4

3,621

by: bumpbot

26 Sep 2025, 05:16

ER

If a, b, and c are positive integers and a/6+b/5 =c/30, is c divisibl

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

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BillyZ

01 May 2017, 05:59

28

6

9,723

by: bumpbot

26 Sep 2025, 05:13

ER

p, q, r, s, t, u, v, w are all positive integers. If p=2^r5^27^t and q

605-655 (Medium) | Exponents +2 tags

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kyloxylo

23 Dec 2019, 16:03

40

10

8,686

by: bumpbot

26 Sep 2025, 00:02

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Is x negative? (1) x^2 + 25 = 89 (2) x^3 < x

555-605 (Medium) | Number Properties

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Bunuel

27 Aug 2015, 01:30

4

5

3,243

by: bumpbot

25 Sep 2025, 14:32

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The least common multiple of positive integers p and q is 72. What is

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

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Russ19

04 Feb 2020, 11:18

44

5

7,933

by: bumpbot

24 Sep 2025, 09:33

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If r and s are positive numbers and θ is one of the operations, +, −,

505-555 (Easy) | Functions and Custom Characters, Number Properties

505-555 (Easy) | Functions and Custom Characters, Number Properties hide tags

Bunuel

26 Apr 2019, 02:30

39

16

21,131

by: bumpbot

24 Sep 2025, 07:58

ER

If positive integer y is equal to the sum of all the unique

655-705 (Hard) | Absolute Values, Number Properties

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BabySmurf

23 Jan 2014, 13:59

49

10

8,043

by: bumpbot

23 Sep 2025, 14:52

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Is the positive integer P a prime number?

805+ (Hard) | Number Properties

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alphonsa

18 Aug 2014, 07:59

24

9

5,796

by: bumpbot

22 Sep 2025, 22:37

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If x is a positive integer, what is the remainder when x^2 is divided

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

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Bunuel

30 Jan 2023, 10:15

5

2

1,650

by: bumpbot

22 Sep 2025, 21:21

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Is y a prime number? (1) y^2 has exactly 3 positive factors. (2) y is

705-805 (Hard) | Number Properties

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Bunuel

13 Jan 2023, 11:15

10

3

1,552

by: Bunuel

22 Sep 2025, 09:48

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If the integer n is greater than 1, is n equal to 2?

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

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1, 2

dimitri92

10 Apr 2012, 10:44

427

24

63,474

by: bumpbot

22 Sep 2025, 08:07

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If x 1 and x is a common factor of integer y and odd integer z, is x

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

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devashish2407

26 Mar 2024, 09:07

10

7

1,585

by: Bunuel

22 Sep 2025, 06:12

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Is root{x} a prime number?

655-705 (Hard) | Absolute Values, Number Properties

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LM

26 Jan 2012, 07:29

60

10

22,979

by: Bunuel

20 Sep 2025, 07:21

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Is the non-negative number r prime?

705-805 (Hard) | Number Properties

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blowice27

17 Sep 2019, 01:36

5

6

3,643

by: bumpbot

20 Sep 2025, 07:01

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n is an integer such that n ≥ 0. For n > 0, the sequence tn is defined

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

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Bunuel

11 Jun 2015, 04:46

61

9

12,149

by: bumpbot

19 Sep 2025, 04:04

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If m and k are non-zero integers, is m a multiple of k?

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

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

Bunuel

16 Dec 2019, 02:43

11

4

4,152

by: bumpbot

19 Sep 2025, 02:12

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What is the highest power of 2 in n!?

705-805 (Hard) | Number Properties

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GMATBusters

23 May 2020, 19:00

35

19

11,636

by: bumpbot

19 Sep 2025, 02:10

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Is √abcd an integer, where a,b,c,d are all prime numbers?

805+ (Hard) | Algebra, Number Properties

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rajarshee

24 Oct 2015, 00:27

13

9

4,221

by: bumpbot

18 Sep 2025, 22:51

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Does a^b lie between 0 and 1, exclusive? (1) |a| < 1 (2) b is a posit

605-655 (Medium) | Absolute Values +3 tags

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Bunuel

05 Jan 2022, 10:00

3

1,869

by: bumpbot

18 Sep 2025, 07:51

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Is n the square of an integer?

805+ (Hard) | Number Properties

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Bunuel

23 Jan 2017, 09:29

5

7

2,483

by: bumpbot

17 Sep 2025, 21:48

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If a and b are positive integers, and a < b, does the decimal expansio

705-805 (Hard) | Number Properties

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nislam

05 Feb 2022, 10:38

10

5

1,910

by: bumpbot

17 Sep 2025, 21:29

ER

What is the value of positive integer p? (1) 300 multiplied by p is

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

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Bunuel

28 Jun 2023, 01:30

3

1,391

by: bumpbot

17 Sep 2025, 13:04

ER

What is the value of the two-digit number TU

655-705 (Hard) | Number Properties

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fireinbelly

30 Apr 2013, 05:45

20

6

8,626

by: bumpbot

17 Sep 2025, 12:58

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If n is a positive integer, can it be written as difference

705-805 (Hard) | Number Properties

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goodyear2013

26 Mar 2014, 08:15

6

4

5,657

by: bumpbot

16 Sep 2025, 15:15

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If n is a positive integer, what is the units digit of n^28? (I) n is

655-705 (Hard) | Number Properties

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Russ19

28 Apr 2020, 09:08

11

3

1,662

by: bumpbot

16 Sep 2025, 08:46

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If x and y are positive integers, is x^17 - 2*y^3 odd?

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

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Bunuel

15 Dec 2020, 01:15

10

6

2,413

by: bumpbot

15 Sep 2025, 18:06

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What is the units digit of the non-negative integer y?

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

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Bunuel

25 Nov 2014, 08:30

14

11

5,309

by: bumpbot

15 Sep 2025, 16:13

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If m and n are positive integers such that m > n, what is the remainde

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

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Bunuel

06 Apr 2015, 07:55

30

8

10,283

by: bumpbot

15 Sep 2025, 14:00

ER

How many different prime factors does x have?

655-705 (Hard) | Number Properties

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Harley1980

13 Apr 2015, 00:57

12

5

3,973

by: bumpbot

15 Sep 2025, 13:11

ER

If the square root of the product of three distinct positive

705-805 (Hard) | Number Properties, Statistics and Sets Problems

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Bunuel

05 Jul 2013, 15:19

73

15

19,017

by: bumpbot

15 Sep 2025, 11:43

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If p and q are prime numbers, is pq+1 an odd number?

555-605 (Medium) | Number Properties

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Bunuel

30 Jun 2023, 04:00

2

3

1,200

by: Bunuel

14 Sep 2025, 23:58

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If x and y are prime numbers, and n is a positive integer, what is the

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

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Bunuel

11 Nov 2023, 06:37

10

4

2,216

by: Bunuel

14 Sep 2025, 11:13

ER

If r and s are consecutive even integers, is r greater than

605-655 (Medium) | Number Properties

605-655 (Medium) | Number Properties hide tags

enigma123

15 Feb 2012, 18:23

3

9

4,541

by: bumpbot

13 Sep 2025, 11:03

ER

Is the positive integer N a perfect square? (1) The number

655-705 (Hard) | Exponents +2 tags

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1, 2

mbaMission

30 Jul 2012, 04:36

498

28

69,101

by: bumpbot

11 Sep 2025, 08:56

ER

If x is positive integer, is 2x an integer?

555-605 (Medium) | Number Properties

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Bunuel

14 Apr 2023, 09:45

6

2

1,411

by: bumpbot

11 Sep 2025, 07:54

ER

a and b are positive integers such that they do not have any common pr

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

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kiran120680

06 Jun 2019, 09:30

23

8

4,521

by: bumpbot

11 Sep 2025, 07:50

ER

Is the positive integer n equal to the square of an integer?

605-655 (Medium) | Number Properties

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shikhar

22 Apr 2012, 01:38

46

6

15,384

by: PSD927

11 Sep 2025, 06:15

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Is 7^7/7^x an integer?

655-705 (Hard) | Algebra +2 tags

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aramjung

19 Mar 2010, 19:35

38

3

15,066

by: bumpbot

11 Sep 2025, 00:16

ER

Let x and y be 2 positive integers such that x/y=12.12, what is the va

705-805 (Hard) | Number Properties

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AkhilAggarwal

26 May 2021, 17:31

18

5

3,228

by: bumpbot

10 Sep 2025, 10:52

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x is a positive number. If 9^x + 9^(x+1) + 9^(x+2) + 9^(x+3) + 9^(x+4)

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

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

Bunuel

24 Oct 2014, 09:26

51

19

15,265

by: bumpbot

10 Sep 2025, 01:34

N is a 3 digit positive integer. Is N greater than 350? (1) Hundred's

555-605 (Medium) | Number Properties

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amanvermagmat

25 Jul 2018, 11:06

1

2

1,764

by: bumpbot

09 Sep 2025, 14:32

ER

If x and y are positive integers, is 4x^2 + xy + y^3 even?

605-655 (Medium) | Number Properties

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Bunuel

20 May 2022, 07:41

2

3

1,460

by: bumpbot

09 Sep 2025, 14:22

ER

If A represents the tens digit and B represents the units digit in the

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

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Bunuel

23 Oct 2023, 01:30

2

4

1,343

by: Bunuel

09 Sep 2025, 08:42

ER

The average of 6 numbers in a set is equal to 0. What is the

705-805 (Hard) | Number Properties

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daviesj

14 Dec 2012, 09:26

45

10

11,283

by: HarshG7

08 Sep 2025, 22:36

ER

M and N are integers such that 6<M<N.What is the value of N?

655-705 (Hard) | Arithmetic +2 tags

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1, 2

AbdurRakib

18 Jun 2021, 14:16

659

22

63,810

by: bumpbot

08 Sep 2025, 13:33

ER

In the multiplication table above, each letter represents an integer.

555-605 (Medium) | Arithmetic, Number Properties

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

1, 2

AbdurRakib

24 Jun 2017, 04:01

360

24

50,187

by: bumpbot

08 Sep 2025, 11:56

ER

Is the median of the five numbers a,b,c,d,e and e equal to d?

505-555 (Easy) | Arithmetic +2 tags

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AbdurRakib

30 Jun 2016, 14:12

99

10

30,760

by: bumpbot

08 Sep 2025, 11:27

ER

Is N an integer? (1) 2N is an integer (2) 5N is an integer

555-605 (Medium) | Number Properties

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divyajoshi12

09 Sep 2018, 09:19

46

6

17,393

by: bumpbot

08 Sep 2025, 01:43

ER

If b is selected at random from Set A, what is the probability that b

655-705 (Hard) | Number Properties, Probability

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

Bunuel

09 Feb 2015, 06:33

42

9

8,939

by: bumpbot

07 Sep 2025, 16:26

ER

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

705-805 (Hard) | Algebra, Number Properties

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

Bunuel

10 Jul 2018, 20:59

30

7

12,380

by: bumpbot

07 Sep 2025, 16:18