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On its banner the other day Yahoo threw bouquets at Alexis Lemaire for a new world record in calculating the 13th root of a 200 digit number in 72 secs. With a computer.
In 1977, Shakuntala Devi extracted the 23rd root of a 201 digit number mentally. In 1980 she mentally multiplied two 13 digit numbers in 28 secs. Her answer was 18, 947, 668, 177, 995, 426, 462, 773, 730.

2007-11-18 20:29:43 · 2 answers · asked by virtrava 3 in Science & Mathematics Mathematics

2 answers

hmm, i see what you mean!! how clever was she??!

2007-11-18 20:38:51 · answer #1 · answered by *Evenstar* 5 · 0 0

what were the 2 thirteen-digit numbers ? I'll do it in 27.5 secs.

2007-11-18 20:41:21 · answer #2 · answered by psychologist_4u 6 · 1 1

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