Question

If n(A union B)=70, n(A)=37, n(B)=52, Find A integer B

Answer 1

Answer:

19

Step-by-step explanation:

n(A union B)= n(A)+n(B)-n(A inter B)

n(A inter B)=n(A)+n(B)- n(A union B)

= 37+52-70

=89-70

n(A inter B)= 19