Out of 30 students in a class, 4 play cricket and
hockey, 5 play cricket and football and 10 play
hockey and football. 4 play cricket only, 8 play
hockey only and 5 play football only.
Each student plays one or more of the three games.
\( 10 . \)
How many students play all the three games?
(1) 1
(2) 2
(3) 3
(4) 4
