Arithmetic Mean of a Set of n Numbers
Source:
March 3, 2010
Problem Statement
Given the set of numbers; , of which one is 1 \minus{} \frac {1}{n} and all the others are The arithmetic mean of the numbers is:
(A)\ 1 \qquad (B)\ n \minus{} \frac {1}{n} \qquad (C)\ n \minus{} \frac {1}{n^2} \qquad (D)\ 1 \minus{} \frac {1}{n^2} \qquad (E)\ 1 \minus{} \frac {1}{n} \minus{} \frac {1}{n^2}