Let S be a set of non-negative integers with 80 elements. Show that we can find a subset of S such that the sum of its elements ( of this subset) is divisible by 80.
Let S be a set of non-negative integers with 80 elements. Show that we can find a subset of S such that the sum of its elements ( of this subset) is divisible by 80.
Elements Of Modern Algebra
8th Edition
ISBN:9781285463230
Author:Gilbert, Linda, Jimmie
Publisher:Gilbert, Linda, Jimmie
Chapter6: More On Rings
Section6.1: Ideals And Quotient Rings
Problem 19E: 19. Let and be nonzero integers. Prove that if and only if divides .
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