Without using any arithmetical symbols (+, -, *, /, or similar; other math symbols; decimal comma or periods; letters; even parentheses) or, in short, anything but the digits, build a number with the digits 1, 3, 5, 7 and 9, that is equal to a number built with the digits 2, 4, 6 and 8 (each digit used once and only once).

Note: This is not a trick. It was extracted from a book edited by Angela Dunn, a mathematician who gathered problems that appeared in many scientific periodical revues!

(In reply to Not a trick? by Richard)

I didnīt say that the solution is right, Richard. All that I said is that owl had the perception to use subscript as notational base.

Posted by pcbouhid on 2005-06-30 23:03:03