Brain Teaser SMS



What is the next number in this series?
1, 2, 6, 42, 1806?
Answer:

To get the next number, multiply the previous number in the series by itself plus one: n * (n+1). For example, to get 6, multiply 2 * 2+1. To get 42 multiply 6 * 6+1.
Thus, 1806 * 1807 = 3263442.


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