MathDB

528

Part of 1990 All Soviet Union Mathematical Olympiad

Problems(1)

ASU 528 All Soviet Union MO 1990 1990 piles with 1, 2, 3, ... , 1990 stones

Source:

8/14/2019
Given 19901990 piles of stones, containing 1,2,3,...,19901, 2, 3, ... , 1990 stones. A move is to take an equal number of stones from one or more piles. How many moves are needed to take all the stones?
pilescombinatoricsalgebragamegame strategy