Let U be a set with 300 elements. (a) Suppose that we choose three subsets of U such that each of them contains 120 elements, the intersection of any two of them contains 37 elements, and the intersection between all three of them contains 9 elements. How many of the elements of U are in none of the three chosen subsets? (b) How many subsets of cardinality 3 are there in the set U? Justify your answers!
Let U be a set with 300 elements. (a) Suppose that we choose three subsets of U such that each of them contains 120 elements, the intersection of any two of them contains 37 elements, and the intersection between all three of them contains 9 elements. How many of the elements of U are in none of the three chosen subsets? (b) How many subsets of cardinality 3 are there in the set U? Justify your answers!
Algebra and Trigonometry (MindTap Course List)
4th Edition
ISBN:9781305071742
Author:James Stewart, Lothar Redlin, Saleem Watson
Publisher:James Stewart, Lothar Redlin, Saleem Watson
Chapter14: Counting And Probability
Section14.CR: Chapter Review
Problem 2CC
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