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

79,927

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

189,031

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

488,755

by: bb

29 Aug 2025, 13:27

ER

a and b are natural odd numbers. Find the last digit of

805+ (Hard) | Number Properties

805+ (Hard) | Number Properties hide tags

SherzodAzamov

09 Jan 2021, 07:46

9

3

1,741

by: bumpbot

23 Apr 2025, 10:42

ER

Three distinct positive integers sum to 10. Is one of the three intege

655-705 (Hard) | Number Properties, Statistics and Sets Problems

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

abrutlag

05 Jul 2020, 10:47

3

4

3,638

by: bumpbot

23 Apr 2025, 07:19

ER

If each of the two digits X and Y is distinct

705-805 (Hard) | Number Properties

705-805 (Hard) | Number Properties hide tags

ConnectTheDots

28 Aug 2012, 06:56

36

9

9,375

by: bumpbot

23 Apr 2025, 07:12

ER

If x any y are positive integers, is x even? (1) x^2 + y^2 = 98 (2) x

655-705 (Hard) | Number Properties

655-705 (Hard) | Number Properties hide tags

Bunuel

18 Nov 2020, 01:15

5

3

2,137

by: bumpbot

23 Apr 2025, 07:10

ER

If x is a positive integer, what is the digit at the units place

655-705 (Hard) | Number Properties

655-705 (Hard) | Number Properties hide tags

raahulgupta12

12 Jul 2019, 04:31

9

8

3,007

by: bumpbot

22 Apr 2025, 11:47

ER

What is the value of x?

605-655 (Medium) | Algebra, Number Properties

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

Bunuel

27 Jan 2015, 07:35

55

9

7,809

by: bumpbot

22 Apr 2025, 11:31

ER

If m is a positive integer with k nonzero digits and no other digits.

655-705 (Hard) | Number Properties

655-705 (Hard) | Number Properties hide tags

Bunuel

06 Jan 2021, 01:15

11

4

2,969

by: bumpbot

22 Apr 2025, 05:03

ER

If p and q are positive integers and pq = 24, what is the

Sub 505 (Easy) | Algebra, Number Properties

Sub 505 (Easy) | Algebra, Number Properties hide tags

Bunuel

17 Jan 2014, 02:35

35

8

44,780

by: bumpbot

22 Apr 2025, 04:20

ER

Is p^2 an odd integer? (1) p is an odd integer. (2) is an odd integer.

Sub 505 (Easy) | Number Properties

Sub 505 (Easy) | Number Properties hide tags

Bunuel

06 Feb 2014, 01:22

21

6

19,173

by: bumpbot

22 Apr 2025, 03:06

ER

How many odd integers are greater than the integer x and

655-705 (Hard) | Number Properties

655-705 (Hard) | Number Properties hide tags

Orange08

06 Sep 2010, 13:09

381

18

73,727

by: bumpbot

21 Apr 2025, 21:30

If x, y, and z are positive integers, is 3x 5y + z even?

655-705 (Hard) | Number Properties

655-705 (Hard) | Number Properties hide tags

Snehaaaaa

01 Nov 2023, 09:47

4

2

1,582

by: Yosemite98

20 Apr 2025, 08:29

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Is p an odd integer? (1) (p^5)^5 is an odd integer (2) ((p)^(1/5))^(1

705-805 (Hard) | Exponents, Number Properties

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

Bunuel

24 May 2022, 03:35

8

4

4,062

by: Bunuel

20 Apr 2025, 07:57

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x, y are positive integers. Find the number of even factors of 4x^2

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

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

EgmatQuantExpert

20 Apr 2025, 00:55

101

6

13,596

by: ravi1522

19 Apr 2025, 22:45

ER

If X and N are positive integers, what is the remainder when X is

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

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

amanvermagmat

02 Jul 2018, 11:11

11

6

1,883

by: bumpbot

18 Apr 2025, 03:39

ER

If the positive integer n has 4 different factors, n=?

605-655 (Medium) | Number Properties

605-655 (Medium) | Number Properties hide tags

MathRevolution

02 Jul 2018, 01:15

6

3

2,193

by: bumpbot

17 Apr 2025, 07:41

ER

The function Ro rounds a positive decimal number to its nearest intege

705-805 (Hard) | Number Properties

705-805 (Hard) | Number Properties hide tags

Bunuel

03 Jun 2020, 21:39

15

7

2,691

by: bumpbot

16 Apr 2025, 03:24

ER

If a, b, and c are integers and ac + b is odd, is b odd?

805+ (Hard) | Number Properties

805+ (Hard) | Number Properties hide tags

emmak

08 Jun 2013, 02:08

38

6

10,216

by: bumpbot

15 Apr 2025, 16:34

ER

If x and y are distinct integers, is x + y a prime number?

705-805 (Hard) | Number Properties

705-805 (Hard) | Number Properties hide tags

Bunuel

25 Nov 2014, 08:35

10

8

6,648

by: bumpbot

11 Apr 2025, 08:32

ER

If n is an integer between 10 and 100, is the tens digit of n even?

705-805 (Hard) | Number Properties, Remainders

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

shasadou

23 Aug 2015, 09:23

42

4

11,797

by: bumpbot

10 Apr 2025, 01:51

ER

GMAT CLUB OLYMPICS: If x > 0, is 1/x a prime number ?

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

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

Bunuel

16 Aug 2021, 08:00

41

8

8,037

by: bumpbot

09 Apr 2025, 11:42

ER

If N is a positive odd integer, is N prime?

655-705 (Hard) | Number Properties

655-705 (Hard) | Number Properties hide tags

Carcass

27 Jul 2017, 08:02

239

16

34,531

by: bumpbot

09 Apr 2025, 10:41

ER

If m and n are positive integers, and if p and q are differe

655-705 (Hard) | Number Properties

655-705 (Hard) | Number Properties hide tags

eybrj2

22 Mar 2012, 20:52

76

4

17,285

by: bumpbot

08 Apr 2025, 12:25

ER

For all integers a and b, the operation θ is defined by aθb = (a+b)/2.

555-605 (Medium) | Functions and Custom Characters, Number Properties

555-605 (Medium) | Functions and Custom Characters, Number Properties hide tags

Bunuel

23 May 2020, 04:10

15

6

7,986

by: bumpbot

07 Apr 2025, 10:05

ER

If k = (n + 2)(n - 2), where n is an integer value greater

555-605 (Medium) | Number Properties

555-605 (Medium) | Number Properties hide tags

msbandi4321

06 Jun 2021, 14:20

329

15

73,968

by: bumpbot

07 Apr 2025, 09:46

ER

12 Days of Christmas GMAT Competition - Day 2: If k is a positive

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

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

Bunuel

12 Dec 2023, 07:00

21

10

3,656

by: bumpbot

07 Apr 2025, 09:45

ER

What is the tens digit of the positive integer n ?

555-605 (Medium) | Number Properties

555-605 (Medium) | Number Properties hide tags

Skywalker18

19 Jun 2016, 10:33

138

9

29,243

by: bumpbot

07 Apr 2025, 09:36

ER

If p = 1008^m*998^n, where m and n are positive integers, what will be

655-705 (Hard) | Exponents, Number Properties

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

Bunuel

11 Dec 2020, 01:15

21

8

2,850

by: bumpbot

07 Apr 2025, 05:49

ER

If n is a four-digit positive integer, then what is the tens

805+ (Hard) | Number Properties

805+ (Hard) | Number Properties hide tags

fozzzy

15 Jun 2013, 08:02

35

10

5,943

by: bumpbot

06 Apr 2025, 19:57

If 2-digit positive integer n is 4 times the sumof the units digit of

705-805 (Hard) | Number Properties

705-805 (Hard) | Number Properties hide tags

siddharthkapoor

06 Oct 2020, 19:57

5

3

1,815

by: samarpan.g28

06 Apr 2025, 11:16

ER

Is (7x)^1/2 an integer?

805+ (Hard) | Number Properties, Roots

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

alex1233

05 Jun 2013, 03:49

209

16

23,022

by: bumpbot

06 Apr 2025, 04:50

ER

If x and y are positive integers such that x^2+y^2 is a prim

655-705 (Hard) | Number Properties

655-705 (Hard) | Number Properties hide tags

mun23

27 Feb 2013, 15:34

15

7

10,362

by: bumpbot

06 Apr 2025, 03:11

ER

GMAT Club Around The World!!! Is 729 a member of set S?

655-705 (Hard) | Number Properties

655-705 (Hard) | Number Properties hide tags

Bunuel

31 Dec 2021, 20:00

9

5

2,155

by: bumpbot

06 Apr 2025, 02:37

ER

Is (x + y)^(1/2) an integer? (1) x^3 = 64 (2) x^2 = y – 3

Sub 505 (Easy) | Number Properties

Sub 505 (Easy) | Number Properties hide tags

HariS1992

03 Oct 2018, 00:10

18

8

9,616

by: bumpbot

05 Apr 2025, 23:43

ER

If x and y are integers, is xy even?

Sub 505 (Easy) | Number Properties

Sub 505 (Easy) | Number Properties hide tags

inderjeetdhillon

13 Dec 2012, 06:03

69

14

47,416

by: bumpbot

05 Apr 2025, 23:36

ER

Is w + h^4 positive? (1) h is positive (2) w is positive

Sub 505 (Easy) | Number Properties

Sub 505 (Easy) | Number Properties hide tags

AbdurRakib

15 Jun 2016, 03:15

50

13

26,537

by: bumpbot

05 Apr 2025, 23:24

ER

In the decimal above, ♣ and x represent single digits. What

805+ (Hard) | Fractions and Ratios, Number Properties

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

perseverant

03 Mar 2014, 14:07

50

13

13,078

by: bumpbot

05 Apr 2025, 03:45

ER

If y is a positive integer, is y/8 an integer?

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

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

TheUltimateWinner

19 Dec 2020, 10:41

6

5

1,982

by: bumpbot

05 Apr 2025, 03:36

ER

GMAT Club World Cup 2022 (DAY 10): Is the sum of four consecutive

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

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

Bunuel

22 Jul 2022, 08:00

20

5

4,117

by: bumpbot

03 Apr 2025, 20:33

ER

If x^3*y^4 = 5000, what is the value of y ? (1) x and y are integers

655-705 (Hard) | Exponents, Number Properties

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

Bunuel

11 Nov 2022, 06:20

9

5

1,565

by: bumpbot

03 Apr 2025, 17:51

ER

Is x^3 an odd integer?

705-805 (Hard) | Number Properties

705-805 (Hard) | Number Properties hide tags

Bunuel

21 Aug 2007, 19:34

3

1,871

by: bumpbot

03 Apr 2025, 17:46

ER

If p is a prime number and n is a positive integer, what is the number

705-805 (Hard) | Number Properties

705-805 (Hard) | Number Properties hide tags

MathRevolution

25 Jul 2018, 01:08

9

6

4,905

by: bumpbot

03 Apr 2025, 08:43

ER

If a and b are two integers such that a is even, b is odd and neither

805+ (Hard) | Fractions and Ratios, Number Properties

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

Bunuel

06 Oct 2021, 04:30

4

8

3,446

by: bumpbot

02 Apr 2025, 23:01

ER

Are x and y integers? (1) The product xy is an integer. (2) x + y

705-805 (Hard) | Number Properties

705-805 (Hard) | Number Properties hide tags

Bunuel

03 Jan 2016, 13:52

35

12

7,481

by: bumpbot

02 Apr 2025, 14:55

ER

P and Q are prime numbers less than 70. What is the units digit of P*Q

805+ (Hard) | Number Properties

805+ (Hard) | Number Properties hide tags

1, 2

EgmatQuantExpert

13 Aug 2018, 03:11

188

25

29,454

by: bumpbot

02 Apr 2025, 13:18

ER

If p/r = 3, What is the value of r ?

Sub 505 (Easy) | Multiples and Factors, Number Properties

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

Bunuel

23 May 2020, 04:37

4

5

3,895

by: bumpbot

02 Apr 2025, 08:12

ER

What is the value of the sum of a list of n odd integers?

Sub 505 (Easy) | Number Properties

Sub 505 (Easy) | Number Properties hide tags

Bunuel

12 Dec 2014, 07:34

10

7

15,337

by: Bunuel

02 Apr 2025, 00:24

ER

If m and n are positive integers, is root(m)^n an integer?

505-555 (Easy) | Exponents +2 tags

505-555 (Easy) | Exponents, Number Properties, Roots hide tags

Bunuel

09 Jul 2012, 04:56

91

6

42,178

by: bumpbot

01 Apr 2025, 19:18

ER

If b is an integer, is (a^2 + b^2)^(1/2) an integer?

555-605 (Medium) | Algebra, Number Properties

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

banksy

26 Feb 2011, 16:45

124

13

27,688

by: bumpbot

01 Apr 2025, 03:21

ER

What is the sum of 3 consecutive integers?

605-655 (Medium) | Number Properties

605-655 (Medium) | Number Properties hide tags

gmatt1476

21 Sep 2019, 15:36

99

12

22,491

by: bumpbot

01 Apr 2025, 02:25

ER

If n = p/q where p and q are nonzero integers, is n an integer ?

605-655 (Medium) | Number Properties

605-655 (Medium) | Number Properties hide tags

amitjash

21 Sep 2010, 21:43

97

14

24,480

by: bumpbot

31 Mar 2025, 19:11