Question

If n(u) =50 , n (A) = 30 n(A intersection B) =15 , n (AUB)' = 10 Find (1) n (B) ii) n( B-A) = 10​

Answer 1

Answer:

1)25

2)10

Step-by-step explanation:

1)n(AUB)=40 as n(AUB)'=10

hence n(B)=n(AUB)+n(AintersectionB)-n(A)