1,048,576 different ways to choose 2 cakes (1996 Chile NMO P5)
Source:
November 22, 2021
combinatorics
Problem Statement
Some time ago, on a radio program, a baker announced a special promotion in the purchase of two stuffed cakes. Each cake could contain up to five fillings of which had in the pastry. On the show, a lady said there were different possibilities to choose the two stuffed cakes. How many different fillings did the pastry chef have?