80個黃金 1個較輕 用天秤 秤4次 如何找出輕者? - 拼圖

By Dinah
at 2008-04-07T18:53
at 2008-04-07T18:53
Table of Contents
"80"塊黃金,其中有一塊黃金的重量較"輕"
如何使用天秤秤"四次"找出較輕的那塊黃金呢?
大家想想看吧
爬文是有找到12個或13個的情況
那些是限制秤3次
不同的是他們沒事先說不同者是較輕或較重
這題有說不同的那個是較輕的
可以省個好幾次的工夫
可是一口氣從12變80...
求解
科科
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拼圖
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