Question

I solve the following
. If n(A) = 20, n(B) = 28 and in CA UB)=
36, then nCAUB) = ?​

Answer 1

Since you might be asking for the intersection of A and B. The answer of the above set statement is ...

36 = 20 + 28 - n(AnB)

n(AnB) = 48 - 36

n(AnB) = 12