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Yahoo!奇摩知識+ - 分類問答 - 科學常識 - 發問中
Yahoo!奇摩知識+ - 分類問答 - 科學常識 - 發問中
數字排列機率問題
Jul 9th 2013, 16:08

Q1：請問用0.1.2.3 4個數字排成4位數，若數字不可重複，共可排成幾個四位
數，不用真的一個一個排出來，請告訴我計算方式。

Q2：擲一個公平骰子2次，T為MAX(X,Y) U為MIN(X,Y)，T 和U為同一個數字
的機率為何，共有幾種情形？

麻煩各位大大幫忙

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