In a school, all students play either football or cricket or both. If 250 play football, 300 play cricket and 120 play both the games, then the number of students who play cricket only are
180
n(F) = 250, n(C) =300, n(F∩C) =120
n(only cricket) = n(C) -n(F∩C)
= 300 – 120
= 180