If this is "causing an upheaval" at university, I am very concerned about the quality of students they are giving degrees to! <G> If anyone wants to know the how this little trick works, scroll down and I will tell all. But I'm not a spoilsport, so if you'd rather be mystified or figure it out on your own, don't scroll down. Alan Barnard Salem, MO Answer | | | | V | | | | V | | | | V | | | | V When you add the digits and subtract from the original number, the new number is ALWAYS a multiple of nine. That, alone, is pretty thought provoking ... but I digress. In the chart, all the multiples of nine (9, 18, 27, 36, etc.) have the same symbol so you will always get a match when you click on the crystal ball. Then, so it won't be obvious, it randomly scrambles the symbols every time you run it--but the multiples of nine will all be the same.
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