Question: Inclusion Exclusion Principle Counting by complement is a technique for counting the number of elements in a set S that have a property by counting

Inclusion Exclusion Principle

Counting by complementis a technique for counting the number of elements in a set S that have a property by counting the total number of elements in S and subtracting the number of elements in S that do not have the property

Theprinciple of inclusion-exclusionis a technique for determining the cardinality of the union of sets that uses the cardinality of each individual set as well as the cardinality of their intersections.

1.Counting Strings

How many 4-Bit Strings have an ODD number of 1s?

is it? 3, 4, 5, 6, 7, 8, 9, or 10

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