Author: Jeff Miller

GMAT OFFICIAL GUIDE DS Solution: We are given that r and s are both roots of the equation x^2 + bx + c = 0, where b and c …

Is RST… Solution: We need to determine whether RST = 1. Statement One Alone:  RS = 1 Since we don’t know the value of T, knowing only that RS …

GMAT OFFICIAL GUIDE DS Solution: We are given that x and y are integers and must determine whether x > y. Statement One Alone:  x + y > 0 …

GMAT OFFICIAL GUIDE DS Solution: We are given that ⌈x⌉ denotes the least integer greater than or equal to x. We must determine whether ⌈x⌉ = 0. Statement One …

GMAT OFFICIAL GUIDE DS Solution: If we have an evenly spaced set consisting of an odd number of numbers, then the middle number is the average. Since here we …

GMAT OFFICIAL GUIDE DS Solution: We are given that 50 percent of the employees are college graduates and 60 percent of the employees are over 40 years old. If …

GMAT OFFICIAL GUIDE DS Solution: We need to determine whether the number of members of club X is greater than the number of members of club Y. An easy …

GMAT OFFICIAL GUIDE DS Solution: We are given that a, b, c, and d, are positive numbers, and we need to determine: Is a/b < c/d ? Since we …