The following information is given sets A, B which are subsets of universal set U.
n(U) = 47
n(A) = 18
n(B) = 11, n(A ∩ B) = 10
Then, the number of elements that are neither in A nor in B is ____
If f(x) = (1 + x) (1+x2)(1+x3), then f'(1) =