Q.There are three rooms I, II and III in a game. Room I contains 2 boxes containing gift items and 3 empty boxes. Room II contains 3 boxes containing gift items and 2 empty boxes, and room III contains 4 boxes containing gift items and 1 empty box. Each room chosen by a player has equal probability. Mr. John selects one box from a randomly selected room. What is the probability that Mr. John wins a box containing gift items?
Correct answer: 3/5