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22.如圖(十一),有三條繩子穿過一片木板,姊妹兩人分別站在木板的左、右兩邊,各選該邊的一條繩子。若每邊每條繩子被選中的機會相等,則兩人選到同一條繩子的機率為何?圖(十一) (A) 1/2(B)1/3
問題詳情
22.如圖(十一),有三條繩子穿過一片木板,姊妹兩人分別站在木板的左、右兩邊,各選該邊的一條繩子。若每邊每條繩子被選中的機會相等,則兩人選到同一條繩子的機率為何?圖(十一)
(A) 1/2
(B)1/3
(C) 1/6
(D)1/9
參考答案
答案:B
難度:適中0.693878
統計:A(1),B(34),C(5),D(9),E(0)
用户評論
【用戶】
郭齡雅
【年級】高一上
【評論內容】左右兩邊選擇可產生的組合如下:1.左一,右一
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