If x, y, and z are positive integers such that x is a factor of y, and…
May 5, 2016
GMAT OFFICIAL GUIDE DS Solution: We are given that x, y, and z are positive integers, and we need to determine whether x – y is odd. We must …
Tag: GMAT Solutions
If n is an integer…
May 5, 2016
GMAT OFFICIAL GUIDE DS Solution: We need to determine whether n is an integer. Statement One Alone: n^2 is an integer. If n^2 is an integer, n could be …
What is the value of (2t + t – x)/(t – x)?
May 5, 2016
GMAT OFFICIAL GUIDE DS Solution: We need to determine the value of (2t + t – x)/(t – x). Using the distributive property we can rewrite this expression as: …
If n is a positive integer, then (√3+1)^2n – (√3-1)^2n is…
May 5, 2016
GMAT OFFICIAL GUIDE DS Solution: We are given that n is a positive integer, and we must determine the tens digit of n. Statement One Alone: The hundreds digit …
If n is a positive integer, is (1/10)^n < 0.01?
May 5, 2016
GMAT OFFICIAL GUIDE DS Solution: We are given that n is a positive integer and need to determine whether (1/10)^n < 0.01. We can convert 0.01 to a fraction …
In a certain business, production index p is directly
May 5, 2016
GMAT OFFICIAL GUIDE DS Solution: We are given that production index p is directly proportional to efficiency index e, which is in turn directly proportional to investment index i. …
If n and k are positive integers, is n divisible by 6?
May 5, 2016
GMAT OFFICIAL GUIDE DS Solution: We are given that n and k are positive integers, and we must determine whether √(n + k)> 2√n. We first square both sides …
What is the value of x – y
May 5, 2016
GMAT OFFICIAL GUIDE DS Solution: We need to determine the value of x + y in the given figure. Let’s start by sketching the figure. In analyzing the angles …