PaytmfounderVijay Shekhar Sharma, 39, is the youngestIndian billionaire, while 92-year-oldSamprada Singh, chairman emeritus ofAlkem Laboratories, is the oldest, according toForbes.Sharma, ranked 1,394th on the list with a fortune of USD 1.7 billion, is the only Indian billionaire in the under-40 league.Sharma founded fast-rising mobile wallet Paytm in 2011. He has also created Paytm Mall, an e-commerce business
& Paytm Payment Bank.
"One of the biggest beneficiaries of India's demonetisation, Paytm has notched up 250 million registered users and 7 million transactions daily. Sharma owns 16 per cent of Paytm, which is now valued at USD 9.4 billion," Forbes said.