Question

if n(AnB) =51,n(A)=20,n(AnB)=13 then n(B)=​

Answer 1

Answer:

This is the answer 44

Step-by-step explanation:

please refer to the attachment

Answer 2

Hoping you mean n(AuB)=51
n(AuB)+n(AnB)=n(A)+n(B)
51+13=20+n(B)
64-20=n(B)
n(B)=44