The Finale week of 'Saptakoti Mahadhani' Kaun Banega Crorepati begins on a Musical note. Megastar Amitabh Bachchan welcomes the roll over Contestant Devika from Goa. How much will Devika win? Watch this fulfilled episode of Kaun Banega Crorepati to find out. Amitabh Bachchan plays the best of top 10 with the 10 new Contestants in the finale week of Kaun Banega Mahacrorepati. A Computer Operator from Ajmer, Rajasthan Arun Mangal joins AB on the Hot Seat. Arun Mangal has won the title of 'Human Calendar' in the Limca Book Of World Records. So how much will Arun Mangal win?