Data Sufficiency (DS)

02 Oct 2025, 01:36

7!! ER

100 Hardest and easiest questions for DS as of October 2025

1, 2

Bunuel

21 Aug 2015, 03:42

842

24

183,685

16 Sep 2025, 06:05

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DS Question Directory by Topic and Difficulty

bb

07 Mar 2012, 08:58

1,506

0

480,490

by: bb

07 Mar 2012, 08:58

7!! ER

Data Sufficiency Butler: 2 Questions Every Day

Bunuel

06 Nov 2018, 08:05

463

18

154,610

18 Nov 2025, 23:46

7!! ER

Claire paid a total of $1 .60 for stamps, some of which cost $0.20 eac

505-555 Level | Fractions and Ratios

505-555 Level | Fractions and Ratios hide tags

adkikani

21 Nov 2018, 08:12

17

4

9,181

19 Nov 2025, 12:20

7!! ER

A chess player won 25 percent of the first 20 games

655-705 Level | Word Problems

655-705 Level | Word Problems hide tags

Bunuel

11 May 2013, 00:48

103

14

17,445

by: pappal

19 Nov 2025, 12:19

7!! ER

A boy purchased a few apples and a few oranges from a shop.

555-605 Level | Probability

555-605 Level | Probability hide tags

Bunuel

18 Nov 2025, 23:45

1

2

109

19 Nov 2025, 11:47

7!! ER

In a certain city, the ratio of the number of people who purchase news

705-805 Level | Percent and Interest Problems, Word Problems

705-805 Level | Percent and Interest Problems, Word Problems hide tags

Bunuel

10 Dec 2018, 03:36

37

8

9,852

by: pappal

19 Nov 2025, 11:39

7!! ER

In a certain rural town, 250 households contain a dog or a cat or both

555-605 Level | Overlapping Sets

555-605 Level | Overlapping Sets hide tags

Bunuel

18 Nov 2025, 23:44

3

97

19 Nov 2025, 11:37

7!! ER

If 50 people paid a total of $110 for tickets to attend a certain high

605-655 Level | Word Problems

605-655 Level | Word Problems hide tags

guddo

24 Jan 2024, 04:15

19

4

7,134

19 Nov 2025, 10:49

7!! ER

Find the average of x consecutive numbers in set S? 1) The 12th larges

655-705 Level | Statistics and Sets Problems

655-705 Level | Statistics and Sets Problems hide tags

GMATinsight

06 Aug 2020, 22:55

7

3

1,657

by: pappal

19 Nov 2025, 10:21

7!! ER

If y>=0, What is the value of x? (1) |x-3|>=y (2) |x-3|<=-y

705-805 Level | Absolute Values, Inequalities

705-805 Level | Absolute Values, Inequalities hide tags

ugimba

09 Jan 2010, 14:17

289

15

44,165

by: manan01

19 Nov 2025, 10:05

7!! ER

If x and y are positive integers, what is the value of x^(1/2)+y^(1/2)

505-555 Level | Algebra

505-555 Level | Algebra hide tags

1, 2

Bunuel

21 Oct 2015, 21:49

214

25

68,549

19 Nov 2025, 09:34

7!! ER

On a certain nonstop trip, Marta averaged x miles per hour for 2 hours

555-605 Level | Distance and Speed Problems

555-605 Level | Distance and Speed Problems hide tags

Bunuel

26 Oct 2015, 09:48

217

14

53,660

19 Nov 2025, 09:21

7!! ER

In Jefferson School, 300 students study French or Spanish or

555-605 Level | Overlapping Sets

555-605 Level | Overlapping Sets hide tags

1, 2

ISBtarget

11 Dec 2009, 13:34

241

21

51,877

19 Nov 2025, 08:13

7!! ER

At a certain library, 1600 books were checked out by patrons yesterday

705-805 Level | Word Problems

705-805 Level | Word Problems hide tags

mmdfl

04 Feb 2024, 11:17

137

10

14,008

by: MartyMurray

19 Nov 2025, 08:06

7!! ER

Is the average (arithmetic mean) of w, x, y, and z less than 28?

655-705 Level | Statistics and Sets Problems

655-705 Level | Statistics and Sets Problems hide tags

Bunuel

13 Dec 2019, 00:05

21

11

7,376

19 Nov 2025, 01:50

7!! ER

There are 50 kids in a locality. On Sunday all of them went together

705-805 Level | Word Problems

705-805 Level | Word Problems hide tags

Bunuel

12 Nov 2024, 01:30

8

9

1,367

by: haianh

19 Nov 2025, 01:02

7!! ER

For what duration did Antony speak in a meeting?

555-605 Level | Work and Rate Problems

555-605 Level | Work and Rate Problems hide tags

Bunuel

27 Jan 2020, 02:42

4

3

2,306

19 Nov 2025, 00:21

7!! ER

During an experiment, the population of a bacterium increased ...

505-555 Level | Exponents, Sequences

505-555 Level | Exponents, Sequences hide tags

CaptainMeow

08 Oct 2019, 05:37

15

6

7,476

18 Nov 2025, 23:12

7!! ER

In June 1989, what was the ratio of the number of sales

555-605 Level | Percent and Interest Problems, Word Problems

555-605 Level | Percent and Interest Problems, Word Problems hide tags

smily_buddy

17 Aug 2007, 13:13

72

8

26,072

18 Nov 2025, 23:06

7!! ER

If points A and B are on the y-axis in the figure, what is the area of

605-655 Level | Coordinate Plane, Geometry

605-655 Level | Coordinate Plane, Geometry hide tags

Bunuel

29 Oct 2014, 08:50

69

13

18,838

18 Nov 2025, 22:42

7!! ER

Of the people waiting on the line before the cash register in

655-705 Level | Word Problems

655-705 Level | Word Problems hide tags

Bunuel

28 May 2024, 01:30

3

4

933

18 Nov 2025, 19:24

7!! ER

If x and k are both integers, x > k, and x−k = 625, what is x? (1) |k|

805+ Level | Absolute Values +3 tags

805+ Level | Absolute Values, Exponents, Inequalities, Number Properties hide tags

BillyZ

20 May 2017, 09:25

53

11

7,641

18 Nov 2025, 11:47

7!! ER

A certain number of people wait in line at a bank until served.

555-605 Level | Word Problems

555-605 Level | Word Problems hide tags

Bunuel

17 Nov 2025, 23:43

3

2

120

18 Nov 2025, 11:32

7!! ER

The total cost of food for the raccoons at the Arizona Wildlife Rescue

555-605 Level | Word Problems

555-605 Level | Word Problems hide tags

Bunuel

17 Nov 2025, 23:42

3

2

153

18 Nov 2025, 11:20

7!! ER

The table above shows a frequency chart for the scores on a certain

605-655 Level | Statistics and Sets Problems

605-655 Level | Statistics and Sets Problems hide tags

XimeSol

19 Nov 2023, 16:59

69

6

13,273

18 Nov 2025, 11:10

7!! ER

In 1985, the Party Time Catering Hall spent a total of $1,200 for mete

605-655 Level | Word Problems

605-655 Level | Word Problems hide tags

Bunuel

22 Jun 2022, 08:00

6

4

1,651

by: Madhan99

18 Nov 2025, 07:59

7!!

The profit P(t) of a startup company, in thousands of dollars,...

655-705 Level | Functions and Custom Characters, Word Problems

655-705 Level | Functions and Custom Characters, Word Problems hide tags

ElenaFerrante

18 Nov 2025, 04:19

0

112

by: ElenaFerrante

18 Nov 2025, 04:19

7!! ER

Are at least 10 percent of the people in Country X who are 65 years

655-705 Level | Statistics and Sets Problems, Word Problems

655-705 Level | Statistics and Sets Problems, Word Problems hide tags

1, 2

LM

27 Apr 2010, 10:03

977

34

135,436

by: AditiDeokar

18 Nov 2025, 00:54

7!! ER

Which weighs more, a cubic unit of water or a cubic unit of liquid X ?

555-605 Level | Inequalities, Word Problems

555-605 Level | Inequalities, Word Problems hide tags

Bunuel

23 May 2020, 05:55

24

4

9,586

17 Nov 2025, 23:15

7!! ER

X is a set containing 7 different numbers. Y is a set containing 6 dif

705-805 Level | Statistics and Sets Problems

705-805 Level | Statistics and Sets Problems hide tags

GGMU

05 Jul 2017, 09:57

40

6

14,001

17 Nov 2025, 23:05

7!! ER

Grace makes an initial deposit of x dollars into a savings a

705-805 Level | Percent and Interest Problems

705-805 Level | Percent and Interest Problems hide tags

enigma123

15 Nov 2011, 15:42

174

10

22,783

17 Nov 2025, 21:26

7!! ER

What is the value of k?

Sub 505 Level | Exponents

Sub 505 Level | Exponents hide tags

Nadiuska

19 Nov 2015, 10:03

30

10

15,166

17 Nov 2025, 18:26

7!! ER

Two racecar drivers, Abernathy and Berdoff, are driving around a

505-555 Level | Distance and Speed Problems

505-555 Level | Distance and Speed Problems hide tags

Bunuel

23 Jun 2015, 02:30

26

13

6,529

17 Nov 2025, 14:42

7!! ER

At what speed was a train traveling on a trip when it had

505-555 Level | Distance and Speed Problems

505-555 Level | Distance and Speed Problems hide tags

Walkabout

13 Dec 2012, 05:52

206

15

53,293

17 Nov 2025, 14:39

7!! ER

Sierra, Randolph, and Conrad all submitted a different number of ticke

555-605 Level | Probability

555-605 Level | Probability hide tags

Bunuel

17 Nov 2025, 01:06

1

123

17 Nov 2025, 11:48

7!! ER

A college clock tower (perpendicular to the ground) casts a shadow

555-605 Level | Word Problems

555-605 Level | Word Problems hide tags

Bunuel

17 Nov 2025, 01:05

3

2

128

17 Nov 2025, 11:31

7!! ER

If n is a positive integer that is less than 10, what is the

705-805 Level | Number Properties

705-805 Level | Number Properties hide tags

TOUGH GUY

10 Dec 2005, 16:19

44

9

16,684

17 Nov 2025, 10:55

7!! ER

What is the variance of set X, which contains only consecutive even in

655-705 Level | Statistics and Sets Problems

655-705 Level | Statistics and Sets Problems hide tags

Bunuel

05 Aug 2021, 01:30

8

5

2,348

17 Nov 2025, 08:57

7!! ER

At least 100 employees in a certain company have management experience

655-705 Level | Overlapping Sets

655-705 Level | Overlapping Sets hide tags

Bunuel

14 Nov 2025, 00:09

1

271

by: arushi118

17 Nov 2025, 08:14

7!! ER

During a particular trip, how much time had elapsed once 90% of the to

655-705 Level | Distance and Speed Problems

655-705 Level | Distance and Speed Problems hide tags

Bunuel

14 Nov 2025, 00:08

3

1

235

by: arushi118

17 Nov 2025, 06:06

7!! ER

If a certain mixture consists of sugar and cinnamon, how many ounces o

Sub 505 Level | Fractions and Ratios

Sub 505 Level | Fractions and Ratios hide tags

mfl6189

16 Nov 2018, 17:41

21

7

15,278

17 Nov 2025, 04:29

7!! ER

After winning 30 percent of the first 50 games it played, team A won

655-705 Level | Word Problems

655-705 Level | Word Problems hide tags

Bunuel

29 Jul 2024, 01:30

12

6

3,023

by: HowCanIDoThis

17 Nov 2025, 02:50

7!!

After the fourth 100-point test in their economics class, LaRae and An

505-555 Level | Statistics and Sets Problems

505-555 Level | Statistics and Sets Problems hide tags

guddo

24 Jan 2024, 03:30

5

2

3,614

17 Nov 2025, 02:40

7!! ER

The level of nitrates was measured and recorded for 10 water samples

655-705 Level | Statistics and Sets Problems

655-705 Level | Statistics and Sets Problems hide tags

guddo

24 Jan 2024, 02:09

63

7

12,196

by: lawyeroffduty

17 Nov 2025, 00:29

7!! ER

An employee at a company was given the task of making a large number

655-705 Level | Work and Rate Problems

655-705 Level | Work and Rate Problems hide tags

Bunuel

27 Jul 2016, 01:40

17

12

8,352

16 Nov 2025, 23:07

7!! ER

n consecutive integers are selected from the integers

655-705 Level | Remainders

655-705 Level | Remainders hide tags

hfbamafan

25 Apr 2012, 22:51

53

10

9,936

16 Nov 2025, 09:40

7!! ER

GMAT Club Olympics 2024 (Day 7): The French and German teams are

805+ Level | Word Problems

805+ Level | Word Problems hide tags

Bunuel

16 Jul 2024, 07:00

18

12

5,534

16 Nov 2025, 08:09

7!! ER

What are all the important considerations for making accurate

555-605 Level | Non-Math Related

555-605 Level | Non-Math Related hide tags

guddo

14 Aug 2024, 09:23

13

3

3,413

16 Nov 2025, 04:57

7!! ER

If x and yare positive integers , what is the remainder when

Sub 505 Level | Exponents, Remainders

Sub 505 Level | Exponents, Remainders hide tags

dzodzo85

20 Mar 2012, 00:40

127

14

24,431

16 Nov 2025, 03:53

7!! ER

How many employees are in company C?

555-605 Level | Combinations

555-605 Level | Combinations hide tags

GMATinsight

14 Aug 2020, 04:08

36

7

7,292

16 Nov 2025, 03:40

7!! ER

Is x^1/2 a prime number? (1) |3x - 7| = 2x + 2 (2) x^2 = 9x

705-805 Level | Absolute Values, Algebra

705-805 Level | Absolute Values, Algebra hide tags

GMATmission

24 Aug 2011, 23:41

22

16

8,399