If you moved the 3 at the end of a certain large number to the beginning, it would be the same as multiplying it by 3. What is the number?

(In reply to re(4): Standard solution by Charlie)

OK, now I understand your method, and it is really effective for getting the digits.  The so-called "standard way" seems to me to be less effective at giving the digits because it gives a repeating decimal and in order to know the repetition period for sure, it appears to me that two whole periods have to be produced by long division, whereas your method only needs to produce one period. And even if we could readily calculate the repetition period, the digits still have to be produced.

Posted by Richard on 2004-03-02 19:34:22