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Fri 17 Sep, 2004 08:17 pm
an evil Doctor protects his computer system from those pesky heros by incorporating a secret code that only he knows how to work out. Two numbers appear on his screen, and he can't log in until he types in a third number, related to the first two.
However, certain spies kept an eye on him as he entered the secret code several times. For instance, when 1 and 2 appeared on the screen, he typed in 9 to log in. When 3 and 4 appeared, he typed in 20. When 5 and 6 appeared, he typed in 12.
Finally, when it was safe to do so, a spy broke in and started up the computer. The numbers 17 and 12 appeared on the screen.
What number should the spy type in to gain access to evil doctors computer?
any one know it its so difficult
I believe it is 54.
Look at the number of letters in the spelling of the numbers.
one(3) two(3) 3x3=9
three(5) four(4) 5x4=20
five(4) six(3) 4x3=12
seventeen(9) twelve(6) 9x6=54
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