Try it if u can........

milindasenarath

Well-known member
  • Mar 23, 2007
    18,428
    2,232
    113
    Sri Lanka
    It is said that designers take 10 seconds to resolve this, engineers take 3 minutes, architects 3 hours and doctors 6 hours.


    Which is the 6th number?

    1, 2, 6, 42, 1806, ___???