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Regional Olympiad - FBH 2014 Grade 10 Problem 4

Source: Regional Olympiad - Federation of Bosnia and Herzegovina 2014

September 24, 2018
combinatoricsDivisibility

Problem Statement

How namy subsets with 33 elements of set S={1,2,3,...,19,20}S=\{1,2,3,...,19,20\} exist, such that their product is divisible by 44.
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