Question

Let A and B be subsets of a universal set U and suppose n(U) = 400, n(A) = 200, n(B) = 160, and n(A ∩ B) = 80. Compute: n(A ∩ B)

Answer 1

The calculation for n(A ∩ B) is unnecessary as the value has already been provided as 80, indicating the number of elements that subsets A and B have in common.

Step-by-step explanation:

The question asks to compute n(A ∩ B), which represents the number of elements in the intersection of subsets A and B of a universal set U, given n(U) is 400, n(A) is 200, n(B) is 160, and n(A ∩ B) is 80.

n(A ∩ B) has already been given as 80. This represents the count of elements that are in both A and B. Hence, there's no computation needed; n(A ∩ B) is simply 80.