Question

In a school, all the students play at least one of three indoor games - chess, carrom and table tennis, 60 play chess, 50 play table tennis, 48 play carrom, 12 play chess and carrom, 15 play carrom and table tennis, 20 play table tennis and chess.
What can be the minimum number of students in the school?
A. 111
B. 123
C. 125
D. 135

Answer 1

Correct Answer - B
`n(AuuBuuC)=111+n(AnnBnnC)`
Maximum number of students = 111+12=123