10 play kabadi, 40 play kho kho only, 5 play both gmaes. Then how many in total?  Choose one:
A) 30
B) 35
C) 38
D) 40
E) 50

Rationale: "10 play kabadi = > n ( a ) = 10 , 5 play both gmaes . = > n ( anb ) = 5 40 play kho kho only , = > n ( b ) = n ( b only ) + n ( anb ) = 40 + 5 = 45 total = > n ( aub ) = n ( a ) + n ( b ) - n ( anb ) = 10 + 45 - 5 = 50 answer : e"
Answer: E