How many elements are in the union of four sets if the sets have 50, 60, 70,

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How many elements are in the union of four sets if the sets have 50, 60, 70, and 80 elements, respectively, each pair of the sets has 5 elements in common, each triple of the sets has 1 common element, and no element is in all four sets?

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Discrete Mathematics and Its Applications

ISBN: 978-0073383095

7th edition

Authors: Kenneth H. Rosen

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Question Posted: May 03, 2016 01:47 AM

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How many elements are in the union of four sets if the sets have 50, 60, 70,

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By inclusionexclusion the answer is 50 60 ...View the full answer

Discrete Mathematics and Its Applications

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