It is said that engineers take 3 minutes to resolve this, architects 3 hours and doctors 6 hours. If you guess which the 6th number is, you'll be able to open the excel file. Once you discover it, put your name, save it and send it on
Which is the 6th number?
1, 2, 6, 42, 1806, ___???
I recieved it in an e-mail. I know the answer...took me like 30
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