One quarter of the five-element subsets of {1, 2, 3, . . . , n] contain the

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One quarter of the five-element subsets of {1, 2, 3, . . . , n] contain the element 7. Determine n (> 5).

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Discrete and Combinatorial Mathematics An Applied Introduction

ISBN: 978-0201726343

5th edition

Authors: Ralph P. Grimaldi

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Question Posted: Jun 21, 2016 08:12 AM

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One quarter of the five-element subsets of {1, 2, 3, . . . , n] contain the

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14n5n5 nl4n5l n ...View the full answer

Discrete and Combinatorial Mathematics An Applied Introduction

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