[問題] 問一題機率
若將四位數1234的數字任意重新排列,則每個數字都改變位置的機率為???
答案 : 3/8
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推
06/25 20:10, , 1F
06/25 20:10, 1F
→
06/25 20:11, , 2F
06/25 20:11, 2F
→
06/25 20:11, , 3F
06/25 20:11, 3F
→
06/25 20:16, , 4F
06/25 20:16, 4F
→
06/25 20:17, , 5F
06/25 20:17, 5F
→
06/25 20:18, , 6F
06/25 20:18, 6F
→
06/25 20:20, , 7F
06/25 20:20, 7F
→
06/25 20:24, , 8F
06/25 20:24, 8F
推
06/25 21:08, , 9F
06/25 21:08, 9F