100 Hardest and easiest questions for DS as of September 2023 #Announcements
Nov 16, 2022
Ku: 743 ER Re: 19DS Question Directory by Topic and Difficulty #Announcements
Mar 7, 2012
Ku: 1390 ER Re: 0E, F, G, and H are the vertices of a polygon. Is polygon EFGH a square
Sep 24 at 07:09pm
Ku: 56 ER Re: 16Juana mailed at least one letter on each day last week. Was the total
Sep 24 at 06:01pm
Ku: 3 ER Re: 3If c ≠ 1, is ab = a + b? (1) a^2 + b^2 = 0 (2) a = a*c = b
Sep 24 at 05:24pm
Ku: 5 ER Re: 2If M and N are positive integers, then is M an even integer?
Sep 24 at 04:58pm
Ku: 5 ER Re: 5If x is an integer greater than 1 but less than 101, is 1/2*x an integ
Sep 24 at 03:25pm
Ku: 3 ER Re: 7If m is an integer, is m odd? (1) 1 + m^2 is an odd integer. (2) 5m
Sep 24 at 03:14pm
Ku: 2 ER Re: 6If b 0, |a/b| = a/b, is b > 0? (1) a > 0 (2) a + b > 0
Sep 24 at 12:44pm
Ku: 0 ER Re: 1Jane drove at a constant speed from point A to point B
Sep 24 at 10:54am
Ku: 8 ER Re: 3Is y^(-x) negative? (1) y is positive. (2) x is negative.
Sep 24 at 09:36am
Ku: 2 ER Re: 2Is 81^a = 3^(b - 1)? (1) 3a + 1 = b - a (2) a = 3
Sep 24 at 09:27am
Ku: 1 ER Re: 2If a, b, and c are three consecutive integers (in the order given), wh
Sep 24 at 09:21am
Ku: 6 ER Re: 6How many odd numbers are there between m and n?
Sep 24 at 08:24am
Ku: 3 ER Re: 5How many prime numbers are there between the integers 7 and X, not-inc
Sep 24 at 08:24am
Ku: 4 Re: 2How many odd numbers are there between m and n?
Sep 24 at 08:06am
Ku: 9 ER Re: 9How many odd numbers are there between m and n?
Sep 24 at 06:28am
Ku: 6 ER Re: 7A scientist recorded the number of eggs in each of 10 birds' nests. Wh
Sep 24 at 05:39am
Ku: 91 ER Re: 12If x = 0.abcd, where a, b, c, and d each represent a nonzero
Sep 24 at 05:30am
Ku: 114 ER Re: 5Frequencies greater than or equal to 22 kHz are inaudible to the human
Sep 24 at 04:22am
Ku: 10 ER Re: 3Is the positive integer n equal to the square of an integer?
Sep 24 at 04:16am
Ku: 23 ER Re: 6A jar contains only black marbles and white marbles. If two thirds of
Sep 24 at 03:31am
Ku: 51 ER Re: 13What is the value of x? (1) x^(1/2) = x - 2 (2) x ≠ 1.
Sep 24 at 03:31am
Ku: 19 ER Re: 17Sep 24 at 01:58am
Ku: 2 Re: 5Line A passes through point (r, s) on the coordinate plane. Is the
Sep 24 at 12:31am
Ku: 27 ER Re: 6In the sequence of positive numbers x1, x2, x3, ..., what is the value
Sep 24 at 12:06am
Ku: 315 ER Re: 21If n is an integer, is n!/(n - 3)! divisible by 24?
Sep 23 at 10:38pm
Ku: 2 Re: 1If n is a positive integer, is n^3 + 4n^2 – 5n divisible by
Sep 23 at 09:18pm
Ku: 8 ER Re: 5A box contains 10 light bulbs, fewer than half of which are defective.
Sep 23 at 07:52pm
Ku: 359 ER Re: 24Is x^4 - x^3 + x^2 - x > 0? (1) x > 1 (2) |x^3| > |x|
Sep 23 at 02:55pm
Ku: 0 ER Re: 3If x and y are positive integers, is x/y < (x+2)/(y+3)?
Sep 23 at 02:49pm
Ku: 53 ER Re: 14If x is an integer, is (x + p)(x + q) an even integer? (1) q is an eve
Sep 23 at 10:24am
Ku: 9 ER Re: 8Events E and F are independent. Is the probability that both events E
Sep 23 at 10:19am
Ku: 29 ER Re: 4If p and q are integers, is p + q odd? (1) p/3 is not an odd integer.
Sep 23 at 10:11am
Ku: 3 ER Re: 5Sep 23 at 09:55am
Ku: 4 ER Re: 3Warehouse W's revenue from the sale of sofas was what percen
Sep 23 at 09:18am
Ku: 401 ER Re: 19If m, n are positive integers, what is the value of mn?
Sep 23 at 08:35am
Ku: 0 ER Re: 1Is ABCD a Rombus 1 ABCD is a Square 2. ABCD diagonals bisect
Sep 23 at 07:43am
Ku: 46 ER Re: 21One side of a certain triangle has length 7. Is the perimeter of the t
Sep 23 at 07:30am
Ku: 3 ER Re: 3In the figure above, is quadrilateral PQRS a parallelogram?
Sep 23 at 07:25am
Ku: 52 ER Re: 10A certain dealership has two locations. Last month, an average (arithm
Sep 23 at 07:23am
Ku: 1 ER Re: 4If x, y, and n are positive integers, is (x/y)^n greater than 1,000 ?
Sep 23 at 07:06am
Ku: 61 ER Re: 11If x, y and z are Integers and -2< z <2, z is not equal to 0, Is (x+y)
Sep 23 at 03:49am
Ku: 8 ER Re: 3Josh has a big drawer full of 40 packets, each containing a marker
Sep 23 at 03:39am
Ku: 44 ER Re: 12What is the standard deviation of the terms in set N? (1) Every prime
Sep 23 at 02:52am
Ku: 1 ER Re: 2If x^2y^3 = 200, what is xy ? (1) y is an integer (2) x is an integer
Sep 23 at 02:05am
Ku: 34 ER Re: 20Is r/s^2 a terminating decimal?
Sep 23 at 02:02am
Ku: 63 ER Re: 5If p is a positive integer, what is the value of p ?
Sep 23 at 01:56am
Ku: 4 ER Re: 3Abe, Beth, Carl and Duncan are four siblings, among which Abe and Carl
Sep 23 at 01:42am
Ku: 118 ER Re: 19If x and y are positive integers, what is the value of x?
Sep 23 at 01:07am
Ku: 1 ER Re: 3If n is a positive integer, is n the square of an integer?
Sep 23 at 12:53am
Ku: 42 ER Re: 8Is a > |b|? (1) 2^(a - b) > 16 (2) |a b| < b
Sep 23 at 12:50am
Ku: 116 ER Re: 220 user online