quick test
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It is said that designers take 10 seconds to resolve this, engineers take 3 minutes, architects 3 hours and doctors 6 hours (any longer than this and you must be either a female, or a surveyor) 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, ___???
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