Question

Write the formula of n(A union B).

Answer 1

p(A)+ p(B)-p (A intersection B) i hope this answer is correct

Answer 2

Step-by-step explanation:

n(A ∪ B) = n(A) + n(B) – n(A ∩ B) Simply, the number of elements in the union of set A and B is equal to the sum of cardinal numbers of the sets A and B, minus that of their intersection.

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