Oct 27 2009

Brain Teaser

Published by Peter at 7:26 pm under Front Page News

What’s the next number in this series

1, 2, 6, 42, 1806……

And the answer is 3,263,442

Here is the formula (n * n+1)

1*2 = 2
2*3 = 6
6*7 = 42
42*43 = 1806
1806*1807 = 3263442

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