简单：e sum of the squares of the first ten natural
numbers is,12 + 22 + ... + 102 = 385The square of the sum of the first ten
natural numbers is,(1 + 2 ...
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其他好文 时间：
2014-05-07 20:23:43
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338
Problem：The sequence of triangle numbers is
generated by adding the natural numbers. So the 7thtriangle number would be 1 +
2 + 3 + 4 + 5 + 6 + 7 = 28...
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其他好文 时间：
2014-05-07 00:28:01
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Page 6:Natural tendency in problem solving is
to pick the first solution that comes to mind and run with it. The disadvantage
of this approach is you ...
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其他好文 时间：
2014-04-27 21:27:40
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