Question 202070
n(A u B)' = n(U) - n(A u B)


n(A u B)' = n(U) - [n(A) + n(B) - n(A ∩ B) ]


n(A u B)' = 60 - [26 + 16 - 9]


n(A u B)' = 60 - 33


n(A u B)' = 27


Answer: B) 27