问题
填空题
用0,1,2,3,4这五个数字,可以组成没有重复的5位奇数的个数为 .
答案
36
题目分析:最后一位数字为1或3,第一位数字剩下3种情况,其余的数全排列,即.
用0,1,2,3,4这五个数字,可以组成没有重复的5位奇数的个数为 .
36
题目分析:最后一位数字为1或3,第一位数字剩下3种情况,其余的数全排列,即.
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