Question

If n (A) =2 , n (B) =28 and n(AuB)=36 then n(AnB)=?​

Answer 1

Answer:

we have,

n(a) = 20,n(b) = 28 and n (A u B) = 36

Since,n (A u B) =n (A)+n(B)-n (A u B)=20+28-36

therefore,n (A u B) = 12