TOT 2000 Autumn AJ7 100 cards with integers 1 to 100, +, =
Source:
May 10, 2020
combinatorics
Problem Statement
A student has cards on which the integers to are printed, as well as a sufficiently large number of cards on which the symbols and are printed. What is the maximal number of correct equalities the student can construct, if each card is used at most once? (R Zhenodarov)