Question

If n(A)=13, n(AUB)=27,n(AnB)=3 then n(B)=?

Answer 1

Answer:

n(B) = 17

Step-by-step explanation:

n(AuB) = n(A) + n(B) - n(AnB)

27 = 13 + n(B) - 3

27 - 13 = n(B) - 3

14 + 3 = n(B)

17 = n(B)