Toughest Math Riddle Cracked by Talented NRI

What is the most difficult riddle to solve ever? Well, according to the Massachusetts-based Clay Mathematical Institute the most complex riddle is a mathematical puzzle of P vs NP.

Vinay Deolalikar, California Hewlett Packard employee claims he solved the puzzle of P vs NP. If this is the case, an Indian-origin IT wizard will be rewarded with a $1 million prize.