MathDB
Arithmetic Mean of a Set of n Numbers

Source:

March 3, 2010

Problem Statement

Given the set of n n numbers; n>1 n > 1, of which one is 1 \minus{} \frac {1}{n} and all the others are 1. 1. The arithmetic mean of the n n 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}