102-101+100+99-98-97+96+95-94-93+92+91-90-89+…+8+7-6-5+4+3-2-1=______.
人气:181 ℃ 时间:2019-08-21 00:35:07
解答
102-101+100+99-98-97+96+95-94-93+92+91-90-89+…+8+7-6-5+4+3-2-1=102-101+(100+99-98-97)+(96+95-94-93)+…+(4+3-2-1),=102-101+4+4+…4,=102-101+100÷4×4,=1+100,=101.故答案为:101....
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