1/6+1/12+1/20+1/30+1/42+……+1/132等于多少
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![1/6+1/12+1/20+1/30+1/42+……+1/132等于多少](/uploads/image/z/217754-26-4.jpg?t=1%2F6%2B1%2F12%2B1%2F20%2B1%2F30%2B1%2F42%2B%E2%80%A6%E2%80%A6%2B1%2F132%E7%AD%89%E4%BA%8E%E5%A4%9A%E5%B0%91)
1/6+1/12+1/20+1/30+1/42+……+1/132等于多少
1/6+1/12+1/20+1/30+1/42+……+1/132等于多少
1/6+1/12+1/20+1/30+1/42+……+1/132等于多少
1/6+1/12+1/20+1/30+1/42+……+1/132=1/2-1/3+1/3-1/4+1/4-1/5+1/5-1/6+1/6-1/7..+1/11-1/12=1/2-1/12=5/12