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Set A consists of all of the positive five-digit even integers that can each be formed by using all of the digits 1, 2, 3, 4, and 5. What is the number of integers in set A?
48 显示答案
· 相关考点
6.3.4 排列
6.3.4 排列
以上解析由 考满分老师提供。
