數字相乘其值皆為偶數之機率?? - 推理遊戲
By Elvira
at 2007-09-18T22:28
at 2007-09-18T22:28
Table of Contents
二數都是偶數的雙位數x二數都是偶數的雙位數
其值全部為雙位數之機率??
ex:22*22=484
這是別人問我的問題
但我怎麼想也想不出使其值皆為雙位數有什麼規則??
--
其值全部為雙位數之機率??
ex:22*22=484
這是別人問我的問題
但我怎麼想也想不出使其值皆為雙位數有什麼規則??
--
Tags:
推理遊戲
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