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

79,765

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

188,983

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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

488,684

by: bb

29 Aug 2025, 13:27

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The dealer of an electronic store discounted the price of a television

805+ (Hard) | Percent and Interest Problems

805+ (Hard) | Percent and Interest Problems hide tags

MahmoudFawzy

27 Aug 2019, 03:30

28

7

7,359

by: bumpbot

13 Oct 2025, 02:49

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If A and B are integers, is B even?

805+ (Hard) | Algebra, Number Properties

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

BrentGMATPrepNow

31 May 2022, 08:28

27

5

4,589

by: bumpbot

11 Oct 2025, 05:50

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If a and b are different nonzero integers, what is the value of b? (1

805+ (Hard) | Algebra

805+ (Hard) | Algebra hide tags

Bunuel

04 May 2015, 05:48

21

10

5,799

by: bumpbot

10 Oct 2025, 11:47

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In a class with 12 children, q of the children are girls. Two children

805+ (Hard) | Probability

805+ (Hard) | Probability hide tags

Bunuel

28 Jan 2018, 23:40

13

4

3,313

by: bumpbot

10 Oct 2025, 11:42

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At a craft fair, Ruth's total revenue from selling 2 types of floral

805+ (Hard) | Word Problems

805+ (Hard) | Word Problems hide tags

Toma13

24 Jan 2024, 02:43

88

7

12,585

by: Bunuel

10 Oct 2025, 08:14

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After the first term in a finite sequence of numbers, each even-number

805+ (Hard) | Sequences

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devashish2407

02 Apr 2024, 03:45

18

6

2,380

by: bumpbot

10 Oct 2025, 04:40

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What percent of the students at University X are enrolled in a science

805+ (Hard) | Overlapping Sets

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1, 2

randommbaguy

14 Aug 2024, 08:04

375

25

38,612

by: Ethan39

10 Oct 2025, 01:54

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12 Days of Christmas GMAT Competition - Day 2: Jingle, an elf

805+ (Hard) | Statistics and Sets Problems

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

Bunuel

12 Dec 2023, 07:00

30

5

10,141

by: bumpbot

09 Oct 2025, 06:22

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If Machine X, working alone at its constant rate, performs half of a

805+ (Hard) | Work and Rate Problems

805+ (Hard) | Work and Rate Problems hide tags

edwin.que

29 Oct 2023, 13:51

198

16

23,770

by: dhruvie

07 Oct 2025, 01:43

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What is the probability that u/v/w and x/y/z are reciprocal fractions?

805+ (Hard) | Probability

805+ (Hard) | Probability hide tags

Bunuel

07 Apr 2020, 04:35

70

11

12,122

by: bumpbot

06 Oct 2025, 08:09

A company paid a total of $28,000 for software licenses

805+ (Hard) | Percent and Interest Problems

805+ (Hard) | Percent and Interest Problems hide tags

ankushsambare

05 Oct 2025, 00:54

9

3

717

by: dnl240

05 Oct 2025, 01:52

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Store S sold a total of 90 copies of a certain book during

805+ (Hard) | Word Problems

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1, 2

Hussain15

05 Oct 2025, 01:46

200

20

40,319

by: Bunuel

05 Oct 2025, 01:46

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For integers a and b, if (a^3 a^2 b)^1/2 = 7, what is the

805+ (Hard) | Algebra

805+ (Hard) | Algebra hide tags

aalriy

08 Dec 2010, 09:39

176

13

38,911

by: bumpbot

04 Oct 2025, 13:10

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Two positive integers a and b are divisible by 5, which is their

805+ (Hard) | Number Properties

805+ (Hard) | Number Properties hide tags

1, 2

EgmatQuantExpert

13 Aug 2018, 03:10

266

27

43,035

by: bumpbot

04 Oct 2025, 09:50

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12 Days of Christmas GMAT Competition - Day 8: Set X = {a, b, c, d, 9}

805+ (Hard) | Statistics and Sets Problems

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

Bunuel

21 Dec 2020, 19:00

50

11

7,158

by: bumpbot

03 Oct 2025, 02:46

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The King Edward College team won 25% of its first games and went on to

805+ (Hard) | Min-Max Problems, Statistics and Sets Problems

805+ (Hard) | Min-Max Problems, Statistics and Sets Problems hide tags

snorkeler

14 Nov 2016, 09:47

128

16

12,737

by: bumpbot

03 Oct 2025, 01:44

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In a university, every student is either a French major or a Spanish

805+ (Hard) | Fractions and Ratios

805+ (Hard) | Fractions and Ratios hide tags

Bunuel

17 Feb 2023, 00:52

39

2

6,282

by: bumpbot

01 Oct 2025, 23:00

Is d greater than or equal to 0? 1). d is the median of d, 1/d, -d 2).

805+ (Hard) | Statistics and Sets Problems

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

PriyankaPalit7

18 Mar 2019, 10:38

36

7

5,252

by: bumpbot

30 Sep 2025, 13:34

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A set consists of n consecutive integers in which the smalle

805+ (Hard) | Statistics and Sets Problems

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

1, 2

vibhav

21 Jul 2013, 07:22

222

20

23,397

by: bumpbot

30 Sep 2025, 06:20

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n and k are positive integers. When n is divided by 23, the quotient i

805+ (Hard) | Remainders

805+ (Hard) | Remainders hide tags

BrentGMATPrepNow

01 Nov 2016, 09:59

216

5

20,692

by: Bunuel

27 Sep 2025, 23:23

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Of the students in a certain class, 55% of the female and 35% of the

805+ (Hard) | Overlapping Sets

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nitya34

29 Mar 2009, 10:59

26

14

12,204

by: bumpbot

27 Sep 2025, 09:49

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12 Days of Christmas GMAT Competition - Day 7: j, 9, k, and m are in a

805+ (Hard) | Sequences

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Bunuel

20 Dec 2022, 07:00

25

4

4,601

by: bumpbot

26 Sep 2025, 06:15

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If x is not equal to 0, is |x| less than 1? (1) x/|x|< x (2) |x| > x

805+ (Hard) | Absolute Values, Inequalities

805+ (Hard) | Absolute Values, Inequalities hide tags

1, 2, 3

Hussain15

01 Nov 2009, 09:25

527

51

147,249

by: bumpbot

25 Sep 2025, 05:12

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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

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

Russ19

04 Feb 2020, 11:18

44

5

7,932

by: bumpbot

24 Sep 2025, 09:33

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A person inherited few gold coins from his father. If he

805+ (Hard) | Remainders, Word Problems

805+ (Hard) | Remainders, Word Problems hide tags

gmihir

13 May 2012, 08:13

216

10

23,259

by: bumpbot

24 Sep 2025, 08:01

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If set S consists of even number of integers, is the median

805+ (Hard) | Statistics and Sets Problems

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

1, 2

mirhaque

21 Feb 2005, 05:53

82

28

23,176

by: bumpbot

23 Sep 2025, 23:03

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If PQ is a diameter of the circle above, and the lengths of AX, BX, PX

805+ (Hard) | Geometry

805+ (Hard) | Geometry hide tags

Bunuel

01 May 2015, 02:10

45

11

8,011

by: bumpbot

23 Sep 2025, 17:42

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If the average of four distinct positive integers is 60, how many inte

805+ (Hard) | Statistics and Sets Problems

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

Bunuel

06 Feb 2019, 05:45

25

11

12,976

by: bumpbot

23 Sep 2025, 16:45

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Is |x - 1| < 1? (1) (x - 1)^2 <= 1 (2) x^2 - 1 > 0

805+ (Hard) | Absolute Values, Inequalities

805+ (Hard) | Absolute Values, Inequalities hide tags

devinawilliam83

25 Oct 2023, 09:11

57

5

14,924

by: bumpbot

23 Sep 2025, 08:48

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Esther bought a computer at a price of p dollars, and she paid a sales

805+ (Hard) | Word Problems

805+ (Hard) | Word Problems hide tags

Bunuel

21 Apr 2024, 08:45

52

8

9,552

by: Aboyhasnoname

23 Sep 2025, 08:28

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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

5,792

by: bumpbot

22 Sep 2025, 22:37

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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

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

devashish2407

26 Mar 2024, 09:07

10

7

1,584

by: Bunuel

22 Sep 2025, 06:12

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

805+ (Hard) | Algebra, Number Properties

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

rajarshee

24 Oct 2015, 00:27

13

9

4,220

by: bumpbot

18 Sep 2025, 22:51

ER -1

A certain company has 500 employees split among three divisions, such

805+ (Hard) | Word Problems

805+ (Hard) | Word Problems hide tags

Bunuel

31 May 2024, 01:30

20

3

1,761

by: DylanD

18 Sep 2025, 17:16

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j and k are positive integers, and n = 10^j

805+ (Hard) | Multiples and Factors

805+ (Hard) | Multiples and Factors hide tags

BrentGMATPrepNow

11 Oct 2018, 13:52

6

5

2,291

by: bumpbot

18 Sep 2025, 06:47

ER

Is n the square of an integer?

805+ (Hard) | Number Properties

805+ (Hard) | Number Properties hide tags

Bunuel

23 Jan 2017, 09:29

5

7

2,480

by: bumpbot

17 Sep 2025, 21:48

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An increasing sequence consists of 4 negative integers and 6 positive

805+ (Hard) | Sequences

805+ (Hard) | Sequences hide tags

Bunuel

05 Jan 2022, 03:00

5

2

2,684

by: crystxl

17 Sep 2025, 19:52

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A set contains the following 5 numbers: a^2, a^5, a, a/2, a/5. Is the

805+ (Hard) | Statistics and Sets Problems

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

1, 2

akhil911

25 Mar 2016, 04:55

174

26

22,906

by: bumpbot

16 Sep 2025, 09:59

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In a certain sequence, each term, starting with the 3rd term

805+ (Hard) | Sequences

805+ (Hard) | Sequences hide tags

mun23

27 Mar 2013, 22:53

116

16

29,831

by: bumpbot

16 Sep 2025, 07:36

ER

At a certain department store present-wrapping counter, each

805+ (Hard) | Word Problems

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chiragr

20 Oct 2013, 09:56

86

7

16,397

by: bumpbot

16 Sep 2025, 05:08

ER

If |a + 1| =|b - 1|, what is the value of a - b? (1) ab > 0 (2) a/b-1

805+ (Hard) | Absolute Values, Inequalities

805+ (Hard) | Absolute Values, Inequalities hide tags

Bunuel

12 Jun 2023, 06:15

13

4

2,015

by: stne

14 Sep 2025, 12:42

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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

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

Bunuel

11 Nov 2023, 06:37

10

4

2,212

by: Bunuel

14 Sep 2025, 11:13

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If x is an integer, what is the value of x?

805+ (Hard) | Absolute Values

805+ (Hard) | Absolute Values hide tags

1, 2

rohitgoel15

04 Dec 2012, 02:53

220

32

81,692

by: bumpbot

12 Sep 2025, 22:04

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When a positive integer 'x' is divided by a divisor 'd', the remainder

805+ (Hard) | Multiples and Factors, Remainders

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

Bunuel

09 Mar 2016, 13:36

129

9

14,425

by: bumpbot

12 Sep 2025, 14:56

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Maria drove a distance without stopping such that she covered first

805+ (Hard) | Distance and Speed Problems

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amanvermagmat

18 Jul 2018, 00:43

49

14

9,111

by: bumpbot

10 Sep 2025, 05:10

ER

If a and b are integers, and |a| > |b|, is a |b| < a

805+ (Hard) | Absolute Values, Inequalities

805+ (Hard) | Absolute Values, Inequalities hide tags

thailandvc

11 Sep 2009, 01:57

169

17

47,229

by: bumpbot

10 Sep 2025, 02:11

ER

If in a six-digit integer n, f(k) represents the value of the

805+ (Hard) | Functions and Custom Characters, Multiples and Factors

805+ (Hard) | Functions and Custom Characters, Multiples and Factors hide tags

study

02 Dec 2009, 12:52

89

8

11,607

by: bumpbot

09 Sep 2025, 18:58

ER

If x is a positive integer, is x divisible by 4?

805+ (Hard) | Multiples and Factors

805+ (Hard) | Multiples and Factors hide tags

Bunuel

20 Oct 2021, 03:30

6

3

3,783

by: bumpbot

09 Sep 2025, 09:12

ER

Beginning at noon yesterday, water was removed from a partially filled

805+ (Hard) | Word Problems

805+ (Hard) | Word Problems hide tags

raheelsn

19 Dec 2023, 05:51

134

13

17,488

by: Harshita2003

09 Sep 2025, 02:12

ER

In a certain building, 1/5 of the offices have both a window

805+ (Hard) | Overlapping Sets

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Jp27

25 Oct 2012, 00:36

113

12

21,632

by: Bunuel

07 Sep 2025, 11:04