Question

If n() = 85, n(A) = 51, n(B) = 44, n(
AB) = 17, find:
n( a u b )'


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Answer 1

Step-by-step explanation:

n( A U B)' = T -{ n(A) +n(B) -n(A n B)}

= 85 -(51+44-17) = 7