When written as a decimal, the fraction m/n (with m < n, both positive integers) contains the consecutive digits 2, 5, 1 (in this order). Find the smallest possible n.

(In reply to re: upper bound by Sing4TheDay)

Uh? Excuse me, but why do you say "Excel only goes out to nine decimal digits"?  Because it is what you see at default after you expand the column width?

Please try this. 

Select any cell you please and enter '=x/y' eg, 3/107.  Go back to that cell, select it and choose "Format Cells", then Number and run "Decimal Places" out to '30'.  Go Ok.

Seems like Excel will give you 16 digit precision.

Given this, how does your Excel, with Gamer's challenge which we've just stepped over, compare with Charlie's result?

Please!  This is an attempt to truth from some other format.

So?  Whaz 2daz song?

Posted by brianjn on 2009-01-07 05:41:50