MathDB
sum of three Egypt fractions less than 1

Source: Croatian NMC 2005, 1st Grade

May 8, 2007
inequalities

Problem Statement

If k,l,mk, l, m are positive integers with 1k+1l+1m<1\frac{1}{k}+\frac{1}{l}+\frac{1}{m}<1, find the maximum possible value of 1k+1l+1m\frac{1}{k}+\frac{1}{l}+\frac{1}{m}.