Neelakantha Bhanu Prakash, the 22-year-old known as the world's fastest human calculator, almost joined McKinsey before starting his math learning startup Bhanzu. "I started out at IIIT Hyderabad...dropped out...went to Delhi's St Stephen's College and started teaching and doing stage shows at the age of 17," he said. Founded in 2020, Bhanzu investors include CRED's Kunal Shah and comedian Biswa.