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（1+3+5+7+9+.+101）-（2+4+6+8+.+100）用简便方法计算...
简便的哦
人气：490 ℃ 时间：2019-09-29 00:09:08
解答
=1-2+3-4+5-6...+99-100+101 =-50+101=51
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