Question: 13 options: The universal set, U, contains 60 elements. If X c U and n(X)=21, then the value of n(X!) is?, The universal set, U,

13 options: The universal set, U, contains 60 elements. If X c U and n(X)=21, then the value of n(X!) is?, The universal set, U, contains 60 total elements X is a subset of the universal set, U.This is what is meant by the statement X c U.The number of elements in X is 60. This is what is meant by the statement n(X)=21. n(X!) is asking for the number of elements in the compliment of X Another way to look at it is... how many OTHER elements are there? n(X)+n(X!)=n(U)

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