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03-05-2012, 11:02 PM
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#11 |
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Only looks like a disaster tourist
Join Date: Feb 2007
Location: above 7,000 feet
Posts: 7,208
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I find the squares interesting - that the square of a number ending in 1 or 9 always ends in 1, 2 or 8 in 4, 3 or 7 in 9, 4 or 6 in 6, 0 in 0 and 5 in 5.
There are a lot of other cool properties, and, of course, squares are just special cases of multiplication in general. Maybe we should have a math(s)-specific forum. |
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