It is currently 27 Jan 2021, 15:59 |

Customized

for You

Track

Your Progress

Practice

Pays

- Jan
**28**### Breaking the GMAT 700 Barrier

08:00 AM PST

-09:00 AM PST

This Thursday join e-GMAT as we talk about GMAT Prep Strategy Session with eGMAT on GMAT Club Live YouTube - Jan
**28**### Sign up or for Target Test Prepâ€™s weekly Quant webinar series

01:00 PM EST

-02:00 PM EST

The free weekly webinar covers sophisticated, yet easy-to-deploy, tactics and strategies for handling commonly misunderstood, high-value quant problems. - Jan
**27**### MBA Resume that Gets you into your Dream BSchool

09:00 AM PST

-10:00 AM PST

Live Resume Review with Avanti Prep this Wednesday - GMAT Club Live on YouTube - Jan
**29**### R1 vs R2: What's the Right Time (and Round) to Apply to a Business School?

09:00 AM PST

-10:00 AM PST

The Great Debate R1 vs R2 MBA Application with mbaMission on GMAT Club Live YouTube - Jan
**29**### Don't Miss the Special Offer! 20% Off for all Math Revolution On-Demand Courses!

08:00 PM PST

-09:00 PM PST

For 7 days from Jan 23 to Jan 29, type Coupon Code "SUCCESS2 " at check out to get 20% off from the original price. This is your chance to score an excellent Q49-51 just like 70% of our students. - Jan
**30**### Free GMAT SC Webinar: Learn the 3-Step Approach to hit the 90th percentile on GMAT SC

07:00 AM PST

-09:00 AM PST

Attend this webinar to learn how to leverage Meaning and Logic to solve the most challenging Sentence Correction Questions - Jan
**30**### Discuss a Profile Enhancement Plan

08:00 PM PST

-09:00 PM PST

Learn how you can develop the profile before you apply! - Jan
**31**### Free GMAT Number Properties Webinar

07:00 AM PST

-09:00 AM PST

Attend this webinar to learn a structured approach to solve 700+ Number Properties question in less than 2 minutes. - Jan
**31**### "Must-Know"Â Advanced Concepts of Integers

09:00 AM PST

-10:00 AM PST

The Integer is the most frequently appearing topic. This webinar will focus on advanced concepts of integers to solve PS-based questions. You will learn our unique, easy-to-learn, unique, Variable Approach to solve DS based questions. - Jan
**31**### 2020 certainly made clear that the future is uncertain

08:00 PM PST

-09:00 PM PST

In January, if you register for one of our live courses, weâ€™ll extend your online resources through all of 2021! So whatever happens, you can be certain that youâ€™ll be able to study for the GMAT all year long. Ends 1/31 - Jan
**31**### 2020 certainly made clear that the future is uncertain

09:00 PM PST

-10:00 PM PST

In January, if you register for one of our live courses, weâ€™ll extend your online resources through all of 2021! So whatever happens, you can be certain that youâ€™ll be able to study for the GMAT all year long. Ends 1/31

100 Hardest and easiest questions for DS
[#permalink]
Updated on: 01 Jan 2021, 04:45

51

Kudos

448

Bookmarks

Expert Reply

100 Hardest Data Sufficiency Questions (Dec 12th, 2020 - Jan 1st, 2021)

Are you familiar with the GMAT Club's timer?We have pulled timer results from our database and analyzed every question in the forum. Based on those results, we have compiled a list of the hardest questions in each of the question forums we have. Below I am presenting to you the top 100 questions from DS forum._________________

New to the GMAT CLUB Forum?

Posting Rules: QUANTITATIVE | VERBAL. Guides and Resources: QUANTITATIVE | VERBAL | Ultimate GMAT Quantitative Megathread | All You Need for Quant

Questions' Banks and Collection:

PS: Standard deviation | Tough Problem Solving Questions With Solutions | Probability and Combinations Questions With Solutions | Tough and tricky exponents and roots questions | 12 Easy Pieces (or not?) | Bakers' Dozen | Algebra set | Mixed Questions | Fresh Meat

DS: DS Standard deviation | Inequalities | 700+ GMAT Data Sufficiency Questions With Explanations | Tough and tricky exponents and roots questions | The Discreet Charm of the DS | Devil's Dozen!!! | Number Properties set | New DS set

MIXED: GMAT Club's Complete Questions' Bank | SEVEN SAMURAI OF 2012 | Tricky questions from previous years. | Special Questions' Directory | Best Of The Best Of 2017 | The Best Of Quant of 2016 | 20 hardest and 20 best questions of 2015 | 15 best topics of 2015 | Seven Samurai of 2012 | GMAT Probability Questions

What are GMAT Club Tests?

Extra-hard Quant Tests with Brilliant Analytics

Posting Rules: QUANTITATIVE | VERBAL. Guides and Resources: QUANTITATIVE | VERBAL | Ultimate GMAT Quantitative Megathread | All You Need for Quant

Questions' Banks and Collection:

PS: Standard deviation | Tough Problem Solving Questions With Solutions | Probability and Combinations Questions With Solutions | Tough and tricky exponents and roots questions | 12 Easy Pieces (or not?) | Bakers' Dozen | Algebra set | Mixed Questions | Fresh Meat

DS: DS Standard deviation | Inequalities | 700+ GMAT Data Sufficiency Questions With Explanations | Tough and tricky exponents and roots questions | The Discreet Charm of the DS | Devil's Dozen!!! | Number Properties set | New DS set

MIXED: GMAT Club's Complete Questions' Bank | SEVEN SAMURAI OF 2012 | Tricky questions from previous years. | Special Questions' Directory | Best Of The Best Of 2017 | The Best Of Quant of 2016 | 20 hardest and 20 best questions of 2015 | 15 best topics of 2015 | Seven Samurai of 2012 | GMAT Probability Questions

What are GMAT Club Tests?

Extra-hard Quant Tests with Brilliant Analytics

Re: 100 Hardest and easiest questions for DS
[#permalink]
Updated on: 01 Jan 2021, 04:45

14

Kudos

61

Bookmarks

Expert Reply

100 Easiest Data Sufficiency Questions (Dec 12th, 2020 - Jan 1st, 2021)

Are you familiar with the GMAT Club's timer?We have pulled timer results from our database and analyzed every question in the forum. Based on those results, we have compiled a list of the easiest questions in each of the question forums we have. Below I am presenting to you the top 100 questions from DS forum.Data Sufficiency (DS) | ||

Rank | Title | Topics |

1 | What is the value of 10 percent of y? | Difficulty: Sub-600 Level, Percent and Interest Problems, Source: Official Guide, Source: OG 2020, Source: OG 2019, Source: OG 2018, Source: OG 2017, Source: OG 2016 |

2 | If a certain vase contains only roses and tulips, how many tulips are | Difficulty: Sub-600 Level, Word Problems, Source: Official Guide, Source: OG 2020, Source: OG 2019 |

3 | What is the number of pages of a certain journal article? The size of | Difficulty: Sub-600 Level, Word Problems, Source: Official Guide, Source: OG 2020, Source: OG 2019 |

4 | What is the value of x ? | Difficulty: Sub-600 Level, Algebra, Source: Official Guide, Source: Quant Review 2nd |

5 | What is the value of x ? | Difficulty: Sub-600 Level, Algebra, Source: Official Guide, Source: Quant Review 2018, Source: Quant Review 2017, Source: Quant Review 2016 |

6 | How many basic units of currency X are equivalent to 250 basi | Difficulty: Sub-600 Level, Arithmetic, Source: Official Guide, Source: OG 2020, Source: OG 2019 |

7 | In a recent town election, what was the ratio of the number of votes | Difficulty: Sub-600 Level, Word Problems, Source: Official Guide, Source: OG 2020, Source: OG 2019 |

8 | In College X the number of students enrolled in both a | Difficulty: Sub-600 Level, Overlapping Sets, Source: GMAT Paper Tests, Source: Official Guide, Source: OG 2017, Source: OG 2016, Source: OG 2015, Source: OG 12 |

9 | What was the median annual salary for the employees at Compan | Difficulty: Sub-600 Level, Statistics and Sets Problems, Source: Official Guide, Source: OG 2020, Source: OG 2019 |

10 | What is the perimeter of triangle ABC ? (1) AB = 16 inches (2) ABC is | Difficulty: Sub-600 Level, Geometry, Source: Official Guide, Source: Quant Review 2020 |

11 | If r and s are positive integers, is r + s even? | Difficulty: Sub-600 Level, Number Properties, Source: Official Guide, Source: OG 2020 |

12 | For which type of investment, J or K, is the annual rate of | Difficulty: Sub-600 Level, Percent and Interest Problems, Source: GMAT Paper Tests, Source: Official Guide, Source: OG 2015, Source: OG 12 |

13 | The symbol R represents one of the following | Difficulty: Sub-600 Level, Arithmetic, Functions and Custom Characters, Source: GMAT Hacks |

14 | If p and q are positive, is p/q less than 1? | Difficulty: Sub-600 Level, Inequalities, Source: Official Guide, Source: Quant Review 2020, Source: Quant Review 2019, Source: Quant Review 2018, Source: Quant Review 2017, Source: Quant Review 2016 |

15 | If sequence S has 120 terms, what is the 105th term of S? | Difficulty: Sub-600 Level, Sequences, Source: Official Guide, Source: OG 2020, Source: OG 2019, Source: OG 2018, Source: OG 2017, Source: OG 2016 |

16 | The research funds of a certain company were divided among three depar | Difficulty: Sub-600 Level, Word Problems, Source: Official Guide, Source: OG 2020, Source: OG 2019 |

17 | What is the tenths digit of the number d when it is written as a decim | Difficulty: Sub-600 Level, Fractions/Ratios/Decimals, Source: Official Guide, Source: EA, Source: Quant Review 2018, Source: Quant Review 2017, Source: Quant Review 2016 |

18 | What is the value of n? | Difficulty: Sub-600 Level, Number Properties, Source: GMAT Prep |

19 | If sequence S has 100 terms, what is the 83rd term of S? | Difficulty: Sub-600 Level, Sequences, Source: Other - Please specify |

20 | Each of the marbles in a jar is either red or white or blue. If one ma | Difficulty: Sub-600 Level, Probability, Source: Official Guide, Source: OG 2020, Source: OG 2019, Source: OG 2018, Source: OG 2017, Source: OG 2016 |

21 | Is x = 1/y? | Difficulty: Sub-600 Level, Algebra, Source: Official Guide, Source: OG 2020, Source: OG 2019, Source: OG 2018, Source: OG 2017, Source: OG 2016 |

22 | If p, q, x, y, and z are different positive integers, which | Difficulty: Sub-600 Level, Statistics and Sets Problems, Source: GMAT Paper Tests, Source: Official Guide, Source: OG 10, Source: Quant Review 2020, Source: Quant Review 2019, Source: Quant Review 2018, Source: Quant Review 2017, Source: Quant Review 1st, Source: Quant Review 2nd, Source: Quant Review 2016 |

23 | The figure above represents a circle graph of Company H's total expens | Difficulty: Sub-600 Level, Geometry, Graphs and Illustrations, Source: Official Guide, Source: OG 2020, Source: OG 2019, Source: OG 2018, Source: OG 2017, Source: OG 2016, Source: OG 2015, Source: OG 12, Source: OG 11 |

24 | What is 11% of x? (1) 3/8 of x is 24 (2) 5% of x is 3.2 | Difficulty: Sub-600 Level, Arithmetic, Percent and Interest Problems, Source: Manhattan GMAT |

25 | What is the value of w^(âˆ’2)? | Difficulty: Sub-600 Level, Exponents/Powers, Source: Official Guide, Source: OG 2020, Source: OG 2019, Source: OG 2018, Source: OG 2017, Source: OG 2016 |

26 | Is 2x > 2y ? | Difficulty: Sub-600 Level, Inequalities, Source: Official Guide, Source: Quant Review 2020, Source: Quant Review 2019, Source: Quant Review 2018, Source: Quant Review 2017, Source: Quant Review 2016 |

27 | How many of the students in a certain class are taking both a history | Difficulty: Sub-600 Level, Number Properties, Word Problems, Source: GMAT Prep |

28 | What is the value of xy? | Difficulty: Sub-600 Level, Algebra, Source: GMAT Paper Tests, Source: Official Guide, Source: OG 10, Source: Quant Review 2020, Source: Quant Review 2019, Source: Quant Review 2018, Source: Quant Review 2017, Source: Quant Review 1st, Source: Quant Review 2nd, Source: Quant Review 2016 |

29 | Carlotta can drive from her home to her office by one of two | Difficulty: Sub-600 Level, Distance/Rate Problems, Source: Official Guide, Source: OG 12, Source: OG 11, Source: OG 10 |

30 | In the xy-plane above, is angle QPR a right angle? | Difficulty: Sub-600 Level, Coordinate Geometry, Geometry, Source: Official Guide, Source: OG 2018, Source: OG 2017, Source: OG 2016, Source: OG 2015 |

31 | A company bought 3 printers and 1 scanner. What was the price of the | Difficulty: Sub-600 Level, Word Problems, Source: Official Guide, Source: OG 2020, Source: OG 2019 |

32 | Is x an integer? (1) x^3 = 8 (2) x = 4^(1/2) | Difficulty: Sub-600 Level, Algebra, Number Properties, Source: Official Guide, Source: OG 2020 |

33 | What is the value of z in the figure above? | Difficulty: Sub-600 Level, Geometry, Source: Official Guide, Source: OG 2021 |

34 | Committee member W wants to schedule a one-hour meeting on T | Difficulty: Sub-600 Level, Word Problems, Source: Official Guide, Source: OG 10, Source: Quant Review 1st, Source: Quant Review 2nd, Source: Quant Review 2016 |

35 | What is the retail price of a certain calculator? (1) The retail pri | Difficulty: Sub-600 Level, Arithmetic, Source: Manhattan GMAT |

36 | P is a particle on the circle shown above. What is the length of the p | Difficulty: Sub-600 Level, Geometry, Source: Official Guide [Pre-2000] |

37 | Is x between 0 and 1? (1) x is between -1/2 and 3/2 (2) 3/4 is 1/4 | Difficulty: Sub-600 Level, Inequalities, Source: GMAT Prep, Source: Quant Review 2020, Source: Quant Review 2019 |

38 | Hoses X and Y simultaneously fill an empty swimming pool tha | Difficulty: Sub-600 Level, Work/Rate Problems, Source: Official Guide, Source: OG 10, Source: Quant Review 1st, Source: Quant Review 2nd |

39 | Is p^2 an odd integer? | Difficulty: Sub-600 Level, Number Properties, Source: GMAT Paper Tests, Source: Official Guide, Source: OG 10, Source: Quant Review 1st, Source: Quant Review 2nd, Source: Quant Review 2016 |

40 | Is x < y? (1) z < y (2) z < x | Difficulty: Sub-600 Level, Inequalities, Source: GMAT Paper Tests, Source: Official Guide, Source: OG 10, Source: Quant Review 1st, Source: Quant Review 2016 |

41 | If x and y are positive what is the value of x? | Difficulty: Sub-600 Level, Algebra, Source: OG 10, Source: Quant Review 1st |

42 | Is rw = 0? | Difficulty: Sub-600 Level, Inequalities, Source: Official Guide, Source: OG 2020, Source: OG 2019, Source: OG 2018, Source: OG 2017, Source: OG 2016 |

43 | Is x < y? | Difficulty: Sub-600 Level, Inequalities, Source: Official Guide, Source: Quant Review 2nd |

44 | Does 2x + 8 = 12 ? (1) 2x + 10 = 14 (2) 3x + 8 = 14 | Difficulty: Sub-600 Level, Algebra, Source: Official Guide, Source: Quant Review 2020, Source: Quant Review 2019 |

45 | If sequence S has 200 terms, what is the 192nd term of S | Difficulty: Sub-600 Level, Sequences, Source: GMAT Prep, Source: OG 12 |

46 | How many men are in a certain company's vanpool program? | Difficulty: Sub-600 Level, Word Problems, Source: Official Guide, Source: OG 2020, Source: OG 2019 |

47 | What is the value of r/2 + s/2 ? | Difficulty: Sub-600 Level, Algebra, Arithmetic, Source: GMAT Paper Tests, Source: Official Guide, Source: OG 10, Source: Quant Review 2018, Source: Quant Review 2017, Source: Quant Review 1st, Source: Quant Review 2nd, Source: Quant Review 2016 |

48 | What is the value of xâˆ’1? | Difficulty: Sub-600 Level, Algebra, Source: Official Guide [Pre-2000], Source: OG 1988, Source: Other - Please specify |

49 | If R, S, and T are points on a line, and if R is 5 meters from T and 2 | Difficulty: Sub-600 Level, Geometry, Source: Official Guide, Source: OG 2020 |

50 | If the list price of a new car was $12,300, what was the cost of the | Difficulty: Sub-600 Level, Percent and Interest Problems, Source: GMAT Paper Tests, Source: Official Guide, Source: OG 10 |

51 | In the terminating decimal equivalent of d, what is the number of nonz | Difficulty: Sub-600 Level, Fractions/Ratios/Decimals, Number Properties, Source: Other - Please specify |

52 | What is the average distance that automobile D travels on one full tan | Difficulty: Sub-600 Level, Algebra, Word Problems, Source: Official Guide [Pre-2000], Source: OG 1988 |

53 | For the system of equations given, what is the value of z? | Difficulty: Sub-600 Level, Algebra, Source: Official Guide, Source: OG 2015, Source: OG 12, Source: OG 11 |

54 | P is a particle on the circle shown above. What is the length of the p | Difficulty: Sub-600 Level, Geometry, Source: Official Guide, Source: Quant Review 2020 |

55 | What is the greatest integer that is less than t? | Difficulty: Sub-600 Level, Number Properties, Source: GMAT Prep |

56 | On a map, 1/2 inch represents 100 miles. According to this map, how ma | Difficulty: Sub-600 Level, Arithmetic, Source: Official Guide, Source: OG 2020 |

57 | How many people in a group of 50 own neither a fax machine nor a laser | Difficulty: Sub-600 Level, Overlapping Sets, Source: Official Guide, Source: OG 2020, Source: OG 2019, Source: OG 2018, Source: OG 2017, Source: OG 2016 |

58 | What is the product of v, w, and x? | Difficulty: Sub-600 Level, Number Properties |

59 | If n is an integer, is n + 1 odd? | Difficulty: Sub-600 Level, Number Properties, Source: Official Guide, Source: OG 2016, Source: OG 2015, Source: OG 12, Source: OG 11 |

60 | What is the value of n in the list above? | Difficulty: Sub-600 Level, Statistics and Sets Problems, Source: Official Guide, Source: OG 2020, Source: OG 2019, Source: OG 2018, Source: OG 2017, Source: OG 2016, Source: OG 2015 |

61 | In a certain class, some students donated cans of food to a local food | Difficulty: Sub-600 Level, Word Problems, Source: Official Guide, Source: OG 2020, Source: OG 2019 |

62 | If the Longfellow Playground is rectangular, what is its width? | Difficulty: Sub-600 Level, Geometry, Source: Official Guide [Pre-2000], Source: OG 1988 |

63 | If n is a positive integer, are n and 1 the only positive divisors of | Difficulty: Sub-600 Level, Number Properties, Source: Official Guide [Pre-2000], Source: OG 1988 |

64 | What number is 15 percent of x ? (1) 18 is 6 percent of x (2) 2/3 of x | Difficulty: Sub-600 Level, Percent and Interest Problems, Source: Official Guide, Source: OG 11, Source: OG 10 |

65 | Is k positive? (1) k is between -2 and 3 on the number line. (2) k is | Difficulty: Sub-600 Level, Number Properties, Source: GMAT Prep |

66 | How many liters of apple juice were added to the cranberry juice in a | Difficulty: Sub-600 Level, Mixture Problems, Source: Manhattan GMAT |

67 | What is the value of x? (1) x + 1 = 2 - 3x (2) 1/(2x) = 2 | Difficulty: Sub-600 Level, Algebra, Source: Official Guide, Source: OG 10, Source: Quant Review 1st |

68 | If x is positive, what is the value of y ? | Difficulty: Sub-600 Level, Algebra, Source: GMAT Prep |

69 | A circular pizza is cut into eight wedge-shaped slices of equal size. | Difficulty: Sub-600 Level, Geometry, Source: Manhattan GMAT |

70 | Is n an integer greater than 14? | Difficulty: Sub-600 Level, Number Properties, Source: Official Guide [Pre-2000], Source: OG 1988 |

71 | What is the volume of the right circular cylinder X ? | Difficulty: Sub-600 Level, Geometry, Source: Official Guide, Source: OG 2021 |

72 | Machine R and machine S work at their respective constant rates. How | Difficulty: Sub-600 Level, Work/Rate Problems, Source: Official Guide, Source: OG 2020, Source: OG 2019 |

73 | What is the value of x^3? | Difficulty: Sub-600 Level, Absolute Values/Modulus, Algebra, Source: Veritas Prep |

74 | What is the value of x? (1) 5x - 3 = 7 (2) x/10 = 1/5 | Difficulty: Sub-600 Level, Algebra, Source: Official Guide [Pre-2000], Source: OG 1988 |

75 | For all x, the expression x* is defined to be ax + a, where a is...... | Difficulty: Sub-600 Level, Functions and Custom Characters, Source: Official Guide, Source: Quant Review 2020, Source: Quant Review 2019, Source: Quant Review 2018, Source: Quant Review 2017, Source: Quant Review 2016 |

76 | Is the integer k a prime number? (1) 2k = 6 (2) 1 < k < 6 | Difficulty: Sub-600 Level, Number Properties, Source: Official Guide, Source: OG 11 |

77 | What is the value of w + q ? (1) 3w=3-3q (2) 5w +5q = 5 | Difficulty: Sub-600 Level, Algebra, Source: Official Guide, Source: OG 2020, Source: OG 2019, Source: OG 2018, Source: OG 2017, Source: OG 2016, Source: OG 2015 |

78 | If knzâ‰ 0, what is the ratio of k to n? 1) The ratio of k to z is 2 to | Difficulty: Sub-600 Level, Fractions/Ratios/Decimals, Source: Math Revolution |

79 | What was the range of the selling prices of the 30 wallets sold by a | Difficulty: Sub-600 Level, Word Problems, Source: Official Guide, Source: OG 2020, Source: OG 2019, Source: OG 2018, Source: OG 2017, Source: OG 2016 |

80 | How many student s are enrolled in the Groveville Public Schools? | Difficulty: Sub-600 Level, Algebra, Source: Official Guide [Pre-2000], Source: OG 1988 |

81 | If x^(1/2)/y = n, what is the value of x? | Difficulty: Sub-600 Level, Algebra, Source: Official Guide, Source: OG 11, Source: OG 10 |

82 | Is x greater than 1.8? (1) x > 1.7 (2) x > 1.9 | Difficulty: Sub-600 Level, Inequalities, Source: Official Guide, Source: OG 11, Source: OG 10 |

83 | The cost of 10 pounds of apples and 2 pounds of grapes was $1 | Difficulty: Sub-600 Level, Algebra, Source: Official Guide, Source: OG 2020, Source: OG 2019 |

84 | A thoroughly blended biscuit mix includes only flour and bak | Difficulty: Sub-600 Level, Mixture Problems, Source: OG 11, Source: OG 10 |

85 | The number of seats in the first row of an auditorium is 18 | Difficulty: Sub-600 Level, Sequences, Source: Official Guide, Source: OG 2018, Source: OG 2017, Source: OG 2016, Source: OG 2015 |

86 | In the figure above, segments PQ and PR are each parallel to one of th | Difficulty: Sub-600 Level, Coordinate Geometry, Source: GMAT Prep |

87 | What is the volume of a certain cube? | Difficulty: Sub-600 Level, Geometry, Source: GMAT Prep |

88 | What is the value of the integer N? | Difficulty: Sub-600 Level, Inequalities, Source: Official Guide, Source: Quant Review 2020, Source: Quant Review 2019, Source: Quant Review 2018, Source: Quant Review 2017, Source: Quant Review 2016 |

89 | Point (x, y) has in which quadrant of the rectangular coordinate syste | Difficulty: Sub-600 Level, Coordinate Geometry, Source: GMAT Paper Tests, Source: Magoosh, Source: OG 10, Source: Quant Review 1st |

90 | What is the value of xy ? | Difficulty: Sub-600 Level, Algebra, Source: GMAT Hacks |

91 | Is the integer p even? (1) The integer p^2 + 1 is odd. (2) The integer | Difficulty: Sub-600 Level, Number Properties, Source: Official Guide, Source: Quant Review 2020, Source: Quant Review 2019 |

92 | Is m > k? (1) 3m > 3k (2) 2m > 2k | Difficulty: Sub-600 Level, Inequalities, Source: GMAT Prep |

93 | A garden store purchased a number of shovels and a number of rakes. If | Difficulty: Sub-600 Level, Word Problems, Source: GMAT Prep |

94 | In the figure above, what is the value of z? | Difficulty: Sub-600 Level, Geometry, Source: Official Guide, Source: OG 2020, Source: OG 2019, Source: OG 2018, Source: OG 2017 |

95 | In Î”JKL shown above, what is the length of segment JL ? | Difficulty: Sub-600 Level, Geometry, Source: Official Guide, Source: OG 2020 |

96 | Square ABCD is inscribed in circle O. What is the area of square regio | Difficulty: Sub-600 Level, Geometry, Source: Official Guide, Source: OG 2020, Source: OG 2019, Source: OG 2018, Source: OG 2017, Source: OG 2016 |

97 | Does nm =40? (1) 10/n = m/4 (2) 5n = 20 and 8m = 80 | Difficulty: Sub-600 Level, Algebra, Source: GMAT Paper Tests |

98 | Is the triangle above equilateral? | Difficulty: Sub-600 Level, Geometry, Source: GMAT Paper Tests, Source: OG 11, Source: OG 10 |

99 | What is the value of ab + bc ? (1) b = 5 (2) a + c = 8 | Difficulty: Sub-600 Level, Algebra, Source: Grockit |

100 | There are 2 groups of students who took a history test. Was the averag | Difficulty: Sub-600 Level, Overlapping Sets, Source: Official Guide, Source: OG 2021 |

_________________

Posting Rules: QUANTITATIVE | VERBAL. Guides and Resources: QUANTITATIVE | VERBAL | Ultimate GMAT Quantitative Megathread | All You Need for Quant

Questions' Banks and Collection:

PS: Standard deviation | Tough Problem Solving Questions With Solutions | Probability and Combinations Questions With Solutions | Tough and tricky exponents and roots questions | 12 Easy Pieces (or not?) | Bakers' Dozen | Algebra set | Mixed Questions | Fresh Meat

DS: DS Standard deviation | Inequalities | 700+ GMAT Data Sufficiency Questions With Explanations | Tough and tricky exponents and roots questions | The Discreet Charm of the DS | Devil's Dozen!!! | Number Properties set | New DS set

MIXED: GMAT Club's Complete Questions' Bank | SEVEN SAMURAI OF 2012 | Tricky questions from previous years. | Special Questions' Directory | Best Of The Best Of 2017 | The Best Of Quant of 2016 | 20 hardest and 20 best questions of 2015 | 15 best topics of 2015 | Seven Samurai of 2012 | GMAT Probability Questions

What are GMAT Club Tests?

Extra-hard Quant Tests with Brilliant Analytics

Re: 100 Hardest and easiest questions for DS
[#permalink]
21 Aug 2015, 04:20

5

Kudos

5

Bookmarks

Expert Reply

Older version of this topic with 100 hardest questions is HERE.

_________________

New to the GMAT CLUB Forum?

Posting Rules: QUANTITATIVE | VERBAL. Guides and Resources: QUANTITATIVE | VERBAL | Ultimate GMAT Quantitative Megathread | All You Need for Quant

Questions' Banks and Collection:

PS: Standard deviation | Tough Problem Solving Questions With Solutions | Probability and Combinations Questions With Solutions | Tough and tricky exponents and roots questions | 12 Easy Pieces (or not?) | Bakers' Dozen | Algebra set | Mixed Questions | Fresh Meat

DS: DS Standard deviation | Inequalities | 700+ GMAT Data Sufficiency Questions With Explanations | Tough and tricky exponents and roots questions | The Discreet Charm of the DS | Devil's Dozen!!! | Number Properties set | New DS set

MIXED: GMAT Club's Complete Questions' Bank | SEVEN SAMURAI OF 2012 | Tricky questions from previous years. | Special Questions' Directory | Best Of The Best Of 2017 | The Best Of Quant of 2016 | 20 hardest and 20 best questions of 2015 | 15 best topics of 2015 | Seven Samurai of 2012 | GMAT Probability Questions

What are GMAT Club Tests?

Extra-hard Quant Tests with Brilliant Analytics

_________________

Posting Rules: QUANTITATIVE | VERBAL. Guides and Resources: QUANTITATIVE | VERBAL | Ultimate GMAT Quantitative Megathread | All You Need for Quant

Questions' Banks and Collection:

PS: Standard deviation | Tough Problem Solving Questions With Solutions | Probability and Combinations Questions With Solutions | Tough and tricky exponents and roots questions | 12 Easy Pieces (or not?) | Bakers' Dozen | Algebra set | Mixed Questions | Fresh Meat

DS: DS Standard deviation | Inequalities | 700+ GMAT Data Sufficiency Questions With Explanations | Tough and tricky exponents and roots questions | The Discreet Charm of the DS | Devil's Dozen!!! | Number Properties set | New DS set

MIXED: GMAT Club's Complete Questions' Bank | SEVEN SAMURAI OF 2012 | Tricky questions from previous years. | Special Questions' Directory | Best Of The Best Of 2017 | The Best Of Quant of 2016 | 20 hardest and 20 best questions of 2015 | 15 best topics of 2015 | Seven Samurai of 2012 | GMAT Probability Questions

What are GMAT Club Tests?

Extra-hard Quant Tests with Brilliant Analytics

Intern

Joined: **29 Aug 2015 **

Posts: **8**

Concentration: **Strategy, Technology**

Schools: **Tuck '18, Tepper '18, NUS '18, CBS '16**

Re: 100 Hardest and easiest questions for DS
[#permalink]
07 Dec 2015, 08:09

1

Kudos

1

Bookmarks

is there a dump of all these questions rather than click each link?

Re: 100 Hardest and easiest questions for DS
[#permalink]
09 Jun 2017, 06:33

2

Kudos

is there a dump of all these questions rather than click each link?

Bunuel IF not can you please make one as Its very time consuming due to technical problem

thanks!!

Bunuel IF not can you please make one as Its very time consuming due to technical problem

thanks!!

Re: 100 Hardest and easiest questions for DS
[#permalink]
29 Jun 2017, 20:33

2

Kudos

This is very helpful. Thank you very much for your efforts. You are doing a great service to those who aspire to ace GMAT. Keep up the good work.

Posted from my mobile device

Posted from my mobile device

Re: 100 Hardest and easiest questions for DS
[#permalink]
29 Jun 2017, 20:57

Thanks BuĂ±uel for your efforts.[WHITE SMILING FACE]

Sent from my Moto G Play using GMAT Club Forum mobile app

Sent from my Moto G Play using GMAT Club Forum mobile app

100 Hardest and easiest questions for DS
[#permalink]
24 Aug 2017, 20:55

Hi Bunuel ,

Thanks for the sharing the list of questions.

Do we anywhere have the option to download all the questions in one go or we have to access them separately only.

Thanks!

Thanks for the sharing the list of questions.

Do we anywhere have the option to download all the questions in one go or we have to access them separately only.

Thanks!

Re: 100 Hardest and easiest questions for DS
[#permalink]
24 Aug 2017, 20:58

3

Kudos

Expert Reply

2201neha wrote:

Hi Bunuel ,

Thanks for the sharing the list of questions.

Do we anywhere have the option to download all the questions in one go or we have to access them separately only.

Thanks!

Thanks for the sharing the list of questions.

Do we anywhere have the option to download all the questions in one go or we have to access them separately only.

Thanks!

The list is regularly updated so there is no downloadable file.

_________________

Posting Rules: QUANTITATIVE | VERBAL. Guides and Resources: QUANTITATIVE | VERBAL | Ultimate GMAT Quantitative Megathread | All You Need for Quant

Questions' Banks and Collection:

PS: Standard deviation | Tough Problem Solving Questions With Solutions | Probability and Combinations Questions With Solutions | Tough and tricky exponents and roots questions | 12 Easy Pieces (or not?) | Bakers' Dozen | Algebra set | Mixed Questions | Fresh Meat

DS: DS Standard deviation | Inequalities | 700+ GMAT Data Sufficiency Questions With Explanations | Tough and tricky exponents and roots questions | The Discreet Charm of the DS | Devil's Dozen!!! | Number Properties set | New DS set

MIXED: GMAT Club's Complete Questions' Bank | SEVEN SAMURAI OF 2012 | Tricky questions from previous years. | Special Questions' Directory | Best Of The Best Of 2017 | The Best Of Quant of 2016 | 20 hardest and 20 best questions of 2015 | 15 best topics of 2015 | Seven Samurai of 2012 | GMAT Probability Questions

What are GMAT Club Tests?

Extra-hard Quant Tests with Brilliant Analytics

Re: 100 Hardest and easiest questions for DS
[#permalink]
29 Jan 2018, 22:02

Hi Bunuel

This is extremely helpful, many thanks

This is extremely helpful, many thanks

Re: 100 Hardest and easiest questions for DS
[#permalink]
30 May 2018, 08:57

answer choices are not showing. Could anyone let me know to view the answers.

Re: 100 Hardest and easiest questions for DS
[#permalink]
30 May 2018, 21:47

1

Kudos

Expert Reply

SoloKOW wrote:

answer choices are not showing. Could anyone let me know to view the answers.

Click Spoiler: OA in the first post of a topic to check the official answer.

2018-05-31_0946.png [ 96.56 KiB | Viewed 74531 times ]

_________________

Posting Rules: QUANTITATIVE | VERBAL. Guides and Resources: QUANTITATIVE | VERBAL | Ultimate GMAT Quantitative Megathread | All You Need for Quant

Questions' Banks and Collection:

PS: Standard deviation | Tough Problem Solving Questions With Solutions | Probability and Combinations Questions With Solutions | Tough and tricky exponents and roots questions | 12 Easy Pieces (or not?) | Bakers' Dozen | Algebra set | Mixed Questions | Fresh Meat

DS: DS Standard deviation | Inequalities | 700+ GMAT Data Sufficiency Questions With Explanations | Tough and tricky exponents and roots questions | The Discreet Charm of the DS | Devil's Dozen!!! | Number Properties set | New DS set

MIXED: GMAT Club's Complete Questions' Bank | SEVEN SAMURAI OF 2012 | Tricky questions from previous years. | Special Questions' Directory | Best Of The Best Of 2017 | The Best Of Quant of 2016 | 20 hardest and 20 best questions of 2015 | 15 best topics of 2015 | Seven Samurai of 2012 | GMAT Probability Questions

What are GMAT Club Tests?

Extra-hard Quant Tests with Brilliant Analytics

Re: 100 Hardest and easiest questions for DS as of August 2019
[#permalink]
02 Sep 2019, 19:59

Expert Reply

chondro48 wrote:

Bunuel,

Can any question in the Hardest Data Sufficiency Questions as of August 2019 appear in the same list as of July 2019, or earlier month and year?

Thanks for clarifying.

Posted from my mobile device

Can any question in the Hardest Data Sufficiency Questions as of August 2019 appear in the same list as of July 2019, or earlier month and year?

Thanks for clarifying.

Posted from my mobile device

Yes. Even though the list is updated once a month, many questions in top remain the same.

_________________

Posting Rules: QUANTITATIVE | VERBAL. Guides and Resources: QUANTITATIVE | VERBAL | Ultimate GMAT Quantitative Megathread | All You Need for Quant

Questions' Banks and Collection:

PS: Standard deviation | Tough Problem Solving Questions With Solutions | Probability and Combinations Questions With Solutions | Tough and tricky exponents and roots questions | 12 Easy Pieces (or not?) | Bakers' Dozen | Algebra set | Mixed Questions | Fresh Meat

DS: DS Standard deviation | Inequalities | 700+ GMAT Data Sufficiency Questions With Explanations | Tough and tricky exponents and roots questions | The Discreet Charm of the DS | Devil's Dozen!!! | Number Properties set | New DS set

MIXED: GMAT Club's Complete Questions' Bank | SEVEN SAMURAI OF 2012 | Tricky questions from previous years. | Special Questions' Directory | Best Of The Best Of 2017 | The Best Of Quant of 2016 | 20 hardest and 20 best questions of 2015 | 15 best topics of 2015 | Seven Samurai of 2012 | GMAT Probability Questions

What are GMAT Club Tests?

Extra-hard Quant Tests with Brilliant Analytics

100 Hardest and easiest questions for DS as of August 2019
[#permalink]
04 Sep 2019, 16:59

Hi bb

Is there any way for a user to search questions by the level of difficulty (e.g. 85% above) in this forum? I know the difficulty level is generated by an unofficial algorithm, but I feel that the computed level is pretty much reliable indicator.

Is there any way for a user to search questions by the level of difficulty (e.g. 85% above) in this forum? I know the difficulty level is generated by an unofficial algorithm, but I feel that the computed level is pretty much reliable indicator.

Founder

Joined: **04 Dec 2002 **

Posts: **22017**

Location: **United States (WA)**

GMAT 1: **750 Q49 V42**

GPA: **3.5**

Re: 100 Hardest and easiest questions for DS as of August 2019
[#permalink]
05 Sep 2019, 02:06

Expert Reply

chondro48 wrote:

Hi bb

Is there any way for a user to search questions by the level of difficulty (e.g. 85% above) in this forum? I know the difficulty level is generated by an unofficial algorithm, but I feel that the computed level is pretty much reliable indicator.

Is there any way for a user to search questions by the level of difficulty (e.g. 85% above) in this forum? I know the difficulty level is generated by an unofficial algorithm, but I feel that the computed level is pretty much reliable indicator.

There are 3 difficulties that are available for search. Thatâ€™s how the system works - hard, medium, and easy.

https://gmatclub.com/forum/search.php?view=search_tags

Posted from my mobile device

_________________

Founder of GMAT Club

Just starting out with GMAT? Start here...

WAMC! - What Are My Chances - Automated Profile Evaluation Tool is Here!

Everything we know about GMAT ONLINE Info is Here!

Just starting out with GMAT? Start here...

WAMC! - What Are My Chances - Automated Profile Evaluation Tool is Here!

Everything we know about GMAT ONLINE Info is Here!

Re: 100 Hardest and easiest questions for DS as of December 2020
[#permalink]
10 Jan 2021, 22:50

Hello from the GMAT Club BumpBot!

Thanks to another GMAT Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).

Want to see all other topics I dig out? Follow me (click follow button on profile). You will receive a summary of all topics I bump in your profile area as well as via email.

_________________

Thanks to another GMAT Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).

Want to see all other topics I dig out? Follow me (click follow button on profile). You will receive a summary of all topics I bump in your profile area as well as via email.

_________________

gmatclubot

Moderators: