Meet Neelkantha Bhanu Prakash - the world’s fastest human calculator. The 21-year-old won India’s first gold medal in the Mental Calculation World Championship at Mind Sports Olympiad (MSO) held in London. He holds 4 world records and 50 Limca records for being the fastest human calculator in the world. TOI asked him some Math questions and this is how fast he solved them. Watch this video.

from Times of India https://timesofindia.indiatimes.com/videos/news/solved-in-3-seconds-the-worlds-fastest-human-calculator/videoshow/78208808.cms