1/6+1/12+1/20+1/30+1/42+1/56的规律计算
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![1/6+1/12+1/20+1/30+1/42+1/56的规律计算](/uploads/image/z/37439-71-9.jpg?t=1%2F6%2B1%2F12%2B1%2F20%2B1%2F30%2B1%2F42%2B1%2F56%E7%9A%84%E8%A7%84%E5%BE%8B%E8%AE%A1%E7%AE%97)
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1/6+1/12+1/20+1/30+1/42+1/56的规律计算
1/6+1/12+1/20+1/30+1/42+1/56的规律计算
1/6+1/12+1/20+1/30+1/42+1/56的规律计算
1/6+1/12+1/20+1/30+1/42+1/56
=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