Thread: Whats the trick!!?
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Old 06-22-2006, 04:47 PM
djj6835 djj6835 is offline
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Join Date: Nov 2004
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Default Re: Whats the trick!!?
The symbols just change places. Every multiple of 9 is the same symbol. Let your two digit number be XY which is the same as 10*X + Y. This means the result after subtracting(X+Y) will be 9X.
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