105+98+102+103+97+100+95+101+91+104+98+106如何解
人气:362 ℃ 时间:2019-11-19 13:33:52
解答
105+98+102+103+97+100+95+101+91+104+98+106
=12x[100+(5-2+2+3-3+0-5+1-9+4-2+6)/12]
=1200+0
=1200
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