Mathematics
Senior High
Resolved
排列組合期望值
2+1
x 2
3
100.有一複選測驗題,每題有四個選項,其中至少有一個正確的答案,每個選項都答對得八
分(有一個選項答錯本題就算錯),則答錯應扣
分才公平 .
4
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2⁴-1-1是什麼意思ㄚ