Using following Information and answer these questions.

A survey conducted on 100 students with regard to their sports activity revealed the following Information:
Every student who participated in the survey plays atleast one of the three games Football(F), Cricket(C) and Volleyball(V); 20 play only F; 30 play only C; 25 play only V while 5 play all the three. Moreover, 8 play both F and V but not C. The number of students who play both F and C only is same as the number of students who play both C and V only.