由数字0,1,2,3,4,5组成的奇偶数字相间且无重复数字的六位数的个数是( )
A. 72
B. 60
C. 48
D. 12
人气:444 ℃ 时间:2019-08-21 10:28:14
解答
将这六个数奇偶数字相间的排列共有2(A33)2=72,
其中0排在首位的有A33A22=12,
把不合题意的舍去得到
符合题设的有72-12=60,
故选B
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