MathDB
Comb problem from IZHO 2019

Source: IZHO 2019 P1

January 11, 2019
izhocombinatoricsfactorial

Problem Statement

Prove that there exist at least 100!100! ways to write 100!100! as sum of elements of set {1!,2!,3!...99!1!,2!,3!...99!} (each number in sum can be two or more times)
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