MathDB
2018 preRMO p28, 8 chocolates of different brands among 3 kids

Source:

August 8, 2019
sum of digitscombinatorics

Problem Statement

Let NN be the number of ways of distributing 88 chocolates of different brands among 33 children such that each child gets at least one chocolate, and no two children get the same number of chocolates. Find the sum of the digits of NN.
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