Shakuntala Devi, an Indian mental calculator,was asked to give the 23rd root of a 201-digit number; she answered in 50 seconds. Her answer was confirmed by calculations done at the US Bureau of Standards for which a special program had to be written to perform such a large calculation.
Born on 4 November in 1939 at the city of Bangalore in Karnataka state, Shakuntala Devi is an outstanding calculating prodigy of India. Belonging from a very humble family, Shakuntala Devi's father was employed as a trapeze and tightrope performer and later on, as a human cannonball in a circus. It was once while she was playing cards with her father at the age of three that it was discovered that she is a calculating genius. Read her eBooks at www.antrik.com