Warren Buffett’s Berkshire Hathaway is set to invest in One97, the parent company of Paytm. It is reported that Berkshire Hathway may pick up 3-4 % of One97 Communications Ltd for Rs 2000 – 2500 cr. This is the first direct investment by the ‘Oracle of Omaha’ in India. Todd Combs, the investment manager from Berkshire…