We are back with our riddle… Saurashtra, Hyderabad, Mysore, Patiala, Travancore, Indore, Bikanare, Jaipur……it incorporates parts of Northern, Central, Southern, Western India… though it seems that we have missed Eastern part : ( ok then lets start from Calcutta … will it make a difference … not at all… as a matter of fact the answer to our question started from the same city.. Ok here’s the question
—What is the common thing that unites regions/cities mentioned above. Naahh!!! Its not the highways but its an institute and the biggest of its kind in India ….Time for you to answer 
