2018 pieces by cutting 2017 times a square, numbers 0,1,2 (HOMC 2017 S Q9)
Source:
September 8, 2019
combinatoricscombinatorial geometry
Problem Statement
Cut off a square carton by a straight line into two pieces, then cut one of two pieces into two small pieces by a straight line, ect. By cutting times we obtain pieces. We write number in every triangle, number 1 in every quadrilateral, and in the polygons. Is the sum of all inserted numbers always greater than ?