Question

4. If n(A) = 7, n(B) = 13, n(A n B) = 4 then find
n( AU B). (Non-anonymous question ) (2 Points)​

Answer 1

Answer:

n(A U B ) = n(A) + n(B) - n(A n B)

n(A U B ) =7+13-4

n(A U B )=16