[計量] 問一提
How many five-digit number composed of distinct
digits begin and end with odd numbers?
講義答案是6720 怎麼算都不對~
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推
02/27 12:46, , 1F
02/27 12:46, 1F
推
02/27 17:36, , 2F
02/27 17:36, 2F
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