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

181

15

82,744

by: thisisakr

16 Apr 2026, 11:46

ER

100 Hardest and easiest questions for DS as of May 2026

1, 2

Bunuel

01 Jan 2026, 05:45

861

24

190,979

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

490,918

by: bb

29 Aug 2025, 13:27

ER

If a, b, and c are integers, is abc divisible by 4?

655-705 (Hard) | Number Properties

655-705 (Hard) | Number Properties hide tags

alex1233

26 Jan 2013, 12:04

23

10

10,022

by: bumpbot

18 Jun 2025, 18:02

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

23,075

by: bumpbot

06 Apr 2025, 04:50

ER

What is the value of the two-digit positive integer n?

655-705 (Hard) | Remainders

655-705 (Hard) | Remainders hide tags

alex1233

16 Mar 2013, 14:04

118

14

16,526

by: bumpbot

01 Mar 2025, 11:07

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

13,744

by: bumpbot

17 Aug 2024, 03:27

ER

Ten years ago, scientists predicted that the animal z would

705-805 (Hard) | Word Problems

705-805 (Hard) | Word Problems hide tags

alexBLR

13 Feb 2010, 16:38

82

19

21,037

by: bumpbot

16 Aug 2025, 10:13

What is the value of r?

805+ (Hard) | Number Properties

805+ (Hard) | Number Properties hide tags

Alexey1989x

05 May 2017, 02:07

10

6

2,947

by: bumpbot

31 Dec 2025, 03:33

ER

In a certain year, the difference between Mary's and Jim's annual sala

655-705 (Hard) | Arithmetic, Word Problems

655-705 (Hard) | Arithmetic, Word Problems hide tags

1, 2

alimad

15 Jul 2019, 04:53

413

36

67,377

by: bumpbot

29 May 2025, 18:26

ER

List S and list T each contain 5 positive integers, and for each list

505-555 (Easy) | Statistics and Sets Problems

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

alimad

20 Oct 2019, 01:18

36

7

18,009

by: bumpbot

16 Oct 2024, 12:57

ER

What is the value of a + b? (1) |a| = -|b| (2) |b| = -|a|

555-605 (Medium) | Absolute Values

555-605 (Medium) | Absolute Values hide tags

alimad

14 Jun 2007, 12:02

38

2

16,825

by: bumpbot

28 Oct 2023, 06:43

ER

Is x 1/16 greater than 5/8?

705-805 (Hard) | Inequalities

705-805 (Hard) | Inequalities hide tags

alimad

04 Nov 2007, 08:19

30

8

17,350

by: bumpbot

06 Mar 2023, 12:43

ER

If p is a prime number greater than 2, what is the value of p ?

505-555 (Easy) | Number Properties

505-555 (Easy) | Number Properties hide tags

1, 2

aljatar

28 Mar 2010, 05:56

144

20

63,100

by: bumpbot

30 Dec 2025, 09:12

ER

If x and y are positive integers, is 2x a multiple of y?

805+ (Hard) | Multiples and Factors

805+ (Hard) | Multiples and Factors hide tags

allabout

02 Nov 2013, 05:28

68

11

25,062

by: bumpbot

30 Mar 2025, 07:12

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Material A costs $3 per kilogram, and Material B costs $5 per kilogram

655-705 (Hard) | Mixture Problems

655-705 (Hard) | Mixture Problems hide tags

1, 2

alltimeacheiver

05 Aug 2017, 00:16

632

24

91,719

by: Usernamevisible

01 May 2026, 01:06

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If x is a positive integer, is the remainder 0 when 3^x + 1 is divided

505-555 (Easy) | Exponents, Remainders

505-555 (Easy) | Exponents, Remainders hide tags

alltimeacheiver

04 Feb 2021, 09:38

85

8

30,377

by: ManifestDreamMBA

04 May 2025, 11:06

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In the xy-plane, the line with equation ax + by + c = 0, where abc ≠ 0

505-555 (Easy) | Coordinate Plane

505-555 (Easy) | Coordinate Plane hide tags

alltimeacheiver

11 Feb 2011, 03:22

65

4

22,046

by: bumpbot

15 Jun 2024, 11:52

ER

If x^(1/3) is a positive integer, does x^(1/3) have more than two dist

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

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

alphabeta1234

08 Apr 2012, 19:36

22

6

6,172

by: bumpbot

11 Sep 2025, 03:11

ER

Triangle T has vertices of (-2,6), (6,2) and (0,k) where k

705-805 (Hard) | Geometry

705-805 (Hard) | Geometry hide tags

alphabeta1234

12 Jul 2012, 17:29

14

10

6,096

by: prabhakar09

19 May 2016, 19:12

ER

A school has a students and b teachers. If a < 150, b < 25, and classe

805+ (Hard) | Multiples and Factors, Word Problems

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

alphak3nny001

09 Sep 2018, 09:37

17

6

6,294

by: bumpbot

28 Dec 2024, 20:04

ER

How long will it take 9 men and 6 women to complete a given task?

705-805 (Hard) | Work and Rate Problems

705-805 (Hard) | Work and Rate Problems hide tags

alphonsa

31 Aug 2014, 04:18

67

11

8,271

by: Gmat860sanskar

13 May 2026, 22:39

ER

If a_n= 0.5* a_n+1, what is the value of a_7

655-705 (Hard) | Sequences

655-705 (Hard) | Sequences hide tags

alphonsa

02 Aug 2014, 01:56

19

2

4,229

by: bumpbot

05 Apr 2026, 10:46

ER

Steve spent a total of $36 on transportation for 3 days. What was his

605-655 (Medium) | Statistics and Sets Problems

605-655 (Medium) | Statistics and Sets Problems hide tags

alphonsa

09 Sep 2014, 23:05

13

3

3,481

by: bumpbot

23 Jan 2026, 02:27

ER

A set has a series of numbers such as a that

705-805 (Hard) | Sequences

705-805 (Hard) | Sequences hide tags

alphonsa

02 Aug 2014, 01:42

18

6

4,516

by: bumpbot

25 Nov 2025, 00:09

ER

Is the positive integer P prime?

555-605 (Medium) | Number Properties

555-605 (Medium) | Number Properties hide tags

alphonsa

15 Aug 2014, 08:51

8

4

3,641

by: bumpbot

26 Sep 2025, 05:16

ER

Is the positive integer P a prime number?

805+ (Hard) | Number Properties

805+ (Hard) | Number Properties hide tags

alphonsa

18 Aug 2014, 07:59

24

9

5,833

by: bumpbot

22 Sep 2025, 22:37

ER

Is (x - y) divisible by 3?

655-705 (Hard) | Multiples and Factors

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

alphonsa

21 Aug 2014, 00:15

2

5

4,325

by: bumpbot

17 Aug 2025, 05:58

ER

In a garden, the ratio of the number of apples, bananas and cherries i

655-705 (Hard) | Fractions and Ratios

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

alphonsa

29 Aug 2014, 05:17

11

4

4,349

by: bumpbot

14 Nov 2024, 02:27

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If x = 1! + 2! + 3! + ... + n! then what is the remainder

805+ (Hard) | Remainders

805+ (Hard) | Remainders hide tags

alphonsa

18 Aug 2014, 08:59

32

8

5,512

by: bumpbot

29 Aug 2024, 16:36

ER

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

605-655 (Medium) | Number Properties

605-655 (Medium) | Number Properties hide tags

alphonsa

18 Aug 2014, 09:35

7

5

3,523

by: bumpbot

28 Dec 2023, 21:24

ER

Is P prime? (1) P is divisible by 2 (2) P is divisible by 4.

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

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

alphonsa

11 Oct 2023, 00:02

8

3

4,244

by: bumpbot

10 Oct 2023, 22:22

ER

What is the remainder when the positive integer N is divided by 12?

605-655 (Medium) | Remainders

605-655 (Medium) | Remainders hide tags

alphonsa

30 May 2016, 14:15

6

7

6,853

by: bumpbot

14 Feb 2023, 06:30

ER

Is y^2 + 7y + xy even?

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

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

alphonsa

21 Aug 2014, 00:13

33

11

7,760

by: bumpbot

12 May 2022, 19:24

ER

What is the greatest common divisor of positive integers m

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

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

alphonsa

18 Aug 2014, 08:02

22

4

4,916

by: Pritishd

29 Sep 2021, 05:05

ER

If x and y are two distinct positive integers, is x/y an int

655-705 (Hard) | Number Properties

655-705 (Hard) | Number Properties hide tags

alphonsa

18 Aug 2014, 09:42

5

10

4,541

by: IanStewart

18 May 2019, 17:31

Integers a and b are such that a - b > 0. Is |a| > |b| ?

705-805 (Hard) | Absolute Values, Inequalities

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

alphonsa

12 Aug 2014, 07:47

7

4

3,412

by: Archit3110

05 Mar 2019, 12:07

ER

Is the positive number 'x' an integer?

655-705 (Hard) | Number Properties

655-705 (Hard) | Number Properties hide tags

alphonsa

15 Aug 2014, 09:00

8

6

3,193

by: bumpbot

19 Feb 2019, 01:18

ER

Is p^2 - 1 divisible by 12?

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

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

alphonsa

15 Aug 2014, 09:13

13

8

9,763

by: KanishkM

05 Jan 2019, 09:04

ER

Is x^(k+1) > x^k?

705-805 (Hard) | Absolute Values +2 tags

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

alphonsa

18 Aug 2014, 09:47

17

6

3,837

by: GyMrAT

20 Sep 2018, 23:10

ER

Is |x| < 5?

605-655 (Medium) | Absolute Values, Inequalities

605-655 (Medium) | Absolute Values, Inequalities hide tags

alphonsa

18 Aug 2014, 09:10

16

10

4,617

by: dabaobao

15 Jun 2018, 08:27

ER

A charity planned to distribute 'n' pens (n<300) to students

Poor Quality

Poor Quality hide tags

alphonsa

02 Aug 2014, 01:31

2

2,213

by: IanStewart

23 Jun 2015, 13:32

ER

What is the value of x^6 + x^(-6) ?

Poor Quality

Poor Quality hide tags

alphonsa

18 Aug 2014, 09:21

3

2

2,605

by: Bunuel

18 Aug 2014, 09:31

ER

A certain IT department of fewer than 15 people hires coders

705-805 (Hard) | Fractions and Ratios

705-805 (Hard) | Fractions and Ratios hide tags

Alterego

12 Aug 2012, 17:46

27

13

6,976

by: bumpbot

19 Dec 2022, 06:04

ER

Triangle ABC has vertices A(3,0) , B(6,0) and C(a,b)

555-605 (Medium) | Geometry

555-605 (Medium) | Geometry hide tags

Amankatyal

02 Aug 2018, 02:59

7

4

4,115

by: bumpbot

01 Oct 2023, 13:34

A list of positive numbers 'L' has all integer values. What is the

705-805 (Hard) | Statistics and Sets Problems

705-805 (Hard) | Statistics and Sets Problems hide tags

amanvermagmat

15 Jan 2019, 22:04

10

9

2,654

by: bumpbot

29 May 2026, 03:13

ER

A club has 80 members, each of which practice one or more of tennis,

805+ (Hard) | Overlapping Sets

805+ (Hard) | Overlapping Sets hide tags

amanvermagmat

08 Dec 2018, 22:58

14

3

3,030

by: bumpbot

29 May 2026, 03:03

There are some boys and girls present in a class apart from teacher,

555-605 (Medium) | Arithmetic, Combinations

555-605 (Medium) | Arithmetic, Combinations hide tags

amanvermagmat

05 Jun 2018, 11:52

24

2

6,221

by: vrinda6

28 May 2026, 06:34

Danny and Swati each receive a certain fixed salary and a variable sal

705-805 (Hard) | Word Problems

705-805 (Hard) | Word Problems hide tags

amanvermagmat

25 Apr 2018, 11:31

6

3

2,363

by: bumpbot

22 May 2026, 10:24

If a, b, c, d are four integers such that a < b < c < d, Is d-c = c-b

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

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

amanvermagmat

28 Jun 2018, 11:41

8

3

2,708

by: bumpbot

17 May 2026, 04:00

In a class, teacher decides to choose two students for a certain exper

555-605 (Medium) | Arithmetic, Combinations

555-605 (Medium) | Arithmetic, Combinations hide tags

amanvermagmat

05 Jun 2018, 11:56

22

4

7,896

by: bumpbot

15 May 2026, 07:07

A red box contains 7 ropes, with an average length of 60 cm per rope,

805+ (Hard) | Arithmetic, Min-Max Problems

805+ (Hard) | Arithmetic, Min-Max Problems hide tags

amanvermagmat

07 May 2018, 23:47

91

4

9,853

by: bumpbot

02 May 2026, 10:44

What is the value of positive integer N? (1) Sum of N consecutive po

705-805 (Hard) | Arithmetic, Sequences

705-805 (Hard) | Arithmetic, Sequences hide tags

amanvermagmat

08 May 2018, 23:23

26

8

4,154

by: bumpbot

29 Apr 2026, 07:26