Read the following passage and solve the questions based on it.
Mohan went to the market and bought a few oranges, mangoes and bananas. He bought a total of 42 fruits. The details of the fruits purchased is as follows:
(i) The number of bananas is less than half the number of oranges.
(ii) The number of mangoes is more than 1/3rd the number of oranges.
(iii) The number of mangoes is less than 3/4th the number of bananas.
How many oranges did Mohan buy?