(1+19/105)+(1+19/105×2)+(1+19/105×3)……(1+19/105×20)=?要简便方法 答案我算出来了是58,过程请发来
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![(1+19/105)+(1+19/105×2)+(1+19/105×3)……(1+19/105×20)=?要简便方法 答案我算出来了是58,过程请发来](/uploads/image/z/131828-68-8.jpg?t=%EF%BC%881%2B19%2F105%EF%BC%89%2B%EF%BC%881%2B19%2F105%C3%972%EF%BC%89%2B%EF%BC%881%2B19%2F105%C3%973%29%E2%80%A6%E2%80%A6%EF%BC%881%2B19%2F105%C3%9720%EF%BC%89%3D%3F%E8%A6%81%E7%AE%80%E4%BE%BF%E6%96%B9%E6%B3%95+%E7%AD%94%E6%A1%88%E6%88%91%E7%AE%97%E5%87%BA%E6%9D%A5%E4%BA%86%E6%98%AF58%2C%E8%BF%87%E7%A8%8B%E8%AF%B7%E5%8F%91%E6%9D%A5)
(1+19/105)+(1+19/105×2)+(1+19/105×3)……(1+19/105×20)=?要简便方法 答案我算出来了是58,过程请发来
(1+19/105)+(1+19/105×2)+(1+19/105×3)……(1+19/105×20)=?
要简便方法 答案我算出来了是58,过程请发来
(1+19/105)+(1+19/105×2)+(1+19/105×3)……(1+19/105×20)=?要简便方法 答案我算出来了是58,过程请发来
20+19/105(1+2+3+……+20)=58