MathDB
Two Infinite Geometric Series

Source:

December 28, 2006
ratioAMCAIMESupportgeometric series

Problem Statement

Two distinct, real, infinite geometric series each have a sum of 11 and have the same second term. The third term of one of the series is 1/8,1/8, and the second term of both series can be written in the form mnp,\frac{\sqrt{m}-n}{p}, where m,m, n,n, and pp are positive integers and mm is not divisible by the square of any prime. Find 100m+10n+p.100m+10n+p.