ASU 495 All Soviet Union MO 1989 1998 normal coins, 1 heavy coin, 1 light
Source:
August 13, 2019
weighingscombinatorics
Problem Statement
We are given normal coins, heavy coin and light coin, which all look the same. We wish to determine whether the average weight of the two abnormal coins is less than, equal to, or greater than the weight of a normal coin. Show how to do this using a balance times or less.