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Re: OT: Unbelievable

From:John Cowan <jcowan@...>
Date:Friday, June 6, 2003, 19:35
BP Jonsson scripsit:

> Is there a mathematical explanation to this? > Not that I would understand such an explanation, > but I'd like to know if there is one.
Sure, it's simple. Two things to notice: the chart of symbols is different every time, and every multiple of 9 (9, 18, 27, 36, etc.) is always the same symbol -- the one which will pop up when you click on the crystal ball. So the page simply has to arrange that the number you are thinking of is a multiple of 9. Consider the two digit number AB, which is equal to A * 10 + B. If we then subtract A + B from this, we get A * 10 + B - A - B, which is 9 * A, which obviously is a multiple of 9. It's done. It took me a while to figure it out, too. -- John Cowan <jcowan@...> Unified Gaelic in Cyrillic script!