Set A contains 6 elements, set B contains 12 elements, and 4 elements are common to sets A and B. How many elements are in A u B?

College Algebra
1st Edition
ISBN:9781938168383
Author:Jay Abramson
Publisher:Jay Abramson
Chapter9: Sequences, Probability And Counting Theory
Section9.5: Counting Principles
Problem 36SE: The number of 5-element subsets from a set containing n elements is equal to the number of 6-element...
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Set A contains 6 elements, set B contains 12 elements, and 4 elements are common to sets A and B. How many elements are in A u B?

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