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Tuesday, August 12, 2008

tricky 9's

How many 9's are from 0-100?

Answer: 20 here lets count:
9,19,29,39,49,59,69,79,89,90,91,92,93,94,95,96,97,98,99. each 9 counts as 1... don't forget 99 counts for 2. tricky!!!

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