There are three bags and . Bag contains 5 one-rupee coins and 4 five-rupee coins; Bag contains 4 one-rupee coins and 5 five-rupee coins and Bag contains 3 one-rupee coins and 6 five-rupee coins. A bag is selected at random and a coin drawn from it at random is found to be a one-rupee coin. Then the probability, that it came from bag , is :