1/24+1/120+1/360+1/840的解法,

学习 时间:2026-09-26 16:28:40 阅读:6725
1/24+1/120+1/360+1/840的解法,请哪位哥哥,

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怕孤单的猎豹

爱笑的白羊

2026-09-26 16:28:40

1/24+1/120+1/360+1/840=(1/24)(1+1/5+1/15+1/35)=(1/24)*(105+21+7+3)/105=(1/24)*(136/105)=17/315