一道观察与计算1 1 1 1 1 1 1 1 1— = — 减 — —— = — 减 — —— = — 减 —2乘3 2 3 3乘4 3 4 4乘5 4 5计算:1 1 1 1 1— + — + — + — + … + —————— =几?6 12 20 30 2005乘2006
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![一道观察与计算1 1 1 1 1 1 1 1 1— = — 减 — —— = — 减 — —— = — 减 —2乘3 2 3 3乘4 3 4 4乘5 4 5计算:1 1 1 1 1— + — + — + — + … + —————— =几?6 12 20 30 2005乘2006](/uploads/image/z/13933225-1-5.jpg?t=%E4%B8%80%E9%81%93%E8%A7%82%E5%AF%9F%E4%B8%8E%E8%AE%A1%E7%AE%971+1+1+1+1+1+1+1+1%E2%80%94+%3D+%E2%80%94+%E5%87%8F+%E2%80%94+%E2%80%94%E2%80%94+%3D+%E2%80%94+%E5%87%8F+%E2%80%94+%E2%80%94%E2%80%94+%3D+%E2%80%94+%E5%87%8F+%E2%80%942%E4%B9%983+2+3+3%E4%B9%984+3+4+4%E4%B9%985+4+5%E8%AE%A1%E7%AE%97%EF%BC%9A1+1+1+1+1%E2%80%94+%2B+%E2%80%94+%2B+%E2%80%94+%2B+%E2%80%94+%2B+%E2%80%A6+%2B+%E2%80%94%E2%80%94%E2%80%94%E2%80%94%E2%80%94%E2%80%94+%3D%E5%87%A0%3F6+12+20+30+2005%E4%B9%982006)
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