If {x1, x2, .... x7} Z+, show that for some i j, either x1 +

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If {x1, x2, .... x7} ⊂ Z+, show that for some i ≠ j, either x1 + xj or xt - xj is divisible by 10.

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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 08:27 AM

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If {x1, x2, .... x7} Z+, show that for some i j, either x1 +

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If two elements in x 1 x 2 x 7 have the same units digit then their difference is div...View the full answer

Discrete and Combinatorial Mathematics An Applied Introduction

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