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 …
What is the circumference of…
May 5, 2016
GMAT OFFICIAL GUIDE DS Solution: We need to determine the circumference of the circle provided. Let’s sketch the diagram below. We see from our diagram that we have a …
If x < 0…
May 5, 2016
GMAT OFFICIAL GUIDE DS… Solution: We are given that x is less than zero, and we must determine whether y is greater than zero. Statement One Alone: x/y < …
Every member of a certain club volunteers to contribute…
May 5, 2016
GMAT OFFICIAL GUIDE DS Solution: We are given that every member of a club contributes evenly to a $60 gift certificate. We must determine the number of members in …