=1/2-1/3+1/3-1/4+1/4-1/5+1/5-1/6+1/6-1/7+1/7-1/8
=1/2-1/8
=3/8
1/6+1/12+1/20+1/30+1/42+1/56=多少
1个回答
相关问题
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计算1/2-1/6-1/12-1/20-1/30-1/42-1/56等于多少?
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1/6+1/12+1/20+1/30+1/42+1/56+.+1/9900
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6/1+12/1+20/1+30/1+42/1+56/1+72/1=?
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2/1+6/1+12/1+20/1+30/1+42/1+56/1=?
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1/2+1/6+1/12+1/20+1/30+1/42+1/56
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2/1+6/1+12/1+20/1+30/1+42/1+56/1=?
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1/6+1/12+1/20+1/30+1/42+1/56+1/72
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2/1+6/1+12/1+20/1+30/1+42/1+56/1=
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1/2+1/6+1/12+1/20+1/30+1/42+1/56
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2/1+6/1+12/1+20/1+30/1+42/1+56/1+72/1+90/1等于多少