12. Five mark example problems V

A survey was conducted among $200$ magazine subscribers of three different magazines $A$, $B$ and $C$. It was found that $75$ members do not subscribe magazine $A$, $100$ members do not subscribe magazine $B$, $50$ members do not subscribe magazine $C$, and $125$ subscribe atleast two of the three magazines. Then,

 

(i) The number of members who subscribe exactly two magazines $=$

 

(ii) The number of members who subscribe only one magazine $=$