Question

f n(ξ) =50, n( A)=15, n(B)=13 and n( A∩B)= 10. Then n(A')=_______

Answer 1

Step-by-step explanation:

n(e)= 50,

n(A)=15,

n(A')=n(e)- n(A)

= 50-15= 35