Oldest Indian billionaire, champion of education: Who was Keshub Mahindra?

Keshub Mahindra, former chairman of Mahindra & Mahindra, passed away at the age of 99 on Wednesday. He served as the chairman of the flagship company of the Mahindra Group for 48 years between 1963 and 2012. After that, he was the chairman emeritus of the firm. Recently, Forbes revealed that he was India's oldest billionaire, with a net worth of $1.2 billion.