Mathematics
Senior High
(3)が分かりません解説つきの回答お願いします🙏
5個の数字0, 2,3,5,7を重複を許して使ってできる, 次のような整数は何個あるか
めよ。
(1) 3桁の整数
(2) 3桁以下の整数
(3) 各位の数の積が偶数となる3桁の整数
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