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Updated on: 01 Jan 2021, 04:45
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.
Updated on: 01 Jan 2021, 04:45
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^(−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 x−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 knz≠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 ΔJKL 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 |
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