Answer: Five
Notes: The head of Reliance Industries Ltd, Mukesh Ambani has moved up to become the fifth richest man in the world, as per the Hurun Research. Last month, the billionaire was at eighth position in the list. Now, he surpassed Warren Buffet and shares 5th rank with Tesla founder Elon Musk and Former Microsoft CEO Steve Ballmer. His net-worth rose to USD 78 billion. Earlier, Jio platforms had raised Rs 117,588 crore from global investors.
