1/2+1/6+1/12+1/20+1/30+.+1/110
=1-1/2+1/2-1/3+1/3-1/4+1/4-1/5+1/5-1/6+……+1/10-1/11
=1-1/11
=10/11
1/2+1/6+1/12+1/20+1/30+.+1/110=?
4个回答
相关问题
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1/2+1/6+1/12+1/20+1/30+1/42+……+1/110=?
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-1*6-1*12-1*20-1*30-...-1*110等于几?
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6/1+12/1+20/1+30/1+42/1+……+90/1+110/1=?
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1/2+1/6+1/12+1/20+.1/110=?
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1/2+1/6+1/12+1/20+1/30+1/42+1/56+1/72+190+1/110=?
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1／2＋1／6＋1／12＋1／20＋1／30＋1／42＋1／56＋1／72＋1／90＋1／110＝?
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计算1/2+1/6+1/12+1/20+1/30+1/42+1/56+1/72+1/90+1/110=?
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计算1/2+1/6+1/12+1/20+1/30+1/42+1/56+1/72+1/90+1/110=?
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1/2+1/6+1/12+1/20+1/30+1/42+1/56+1/72+1/90+1/110 +······1/99
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1/2+1/6+1/12+1/20+……+1/90+1/110+1/132