Q.There are three rooms I, II and III in a game. Room I has 2 boxes containing gift items and 3 empty boxes. Room II contains 3 boxes containing gift items and 2 empty boxes. Room III containers 4 boxes containing gift items and 1 empty box. Each room choosen by a player has the same probability. Mr. John Selects a box from a room choosen at random. What is the probability that Mr. John wins a box of goodies?
Correct answer: 3/5