Question

if A and B are overlapping subset of a universal set U,write the relation between n(U), n(A U B) and (A U B) compliments​

Answer 1

n(U) = n(AUB) + n(AUB)'

Explanation:

The cardinality of the universal set will be to add the cardinalities of both the union of A and B i.e (A U B) and and the compliments of A and B i.e n(AUB)'