...6这六个数字中,任取三个组成无重复数字的三位数,但当三个数字中有...

发布网友发布时间：2024-01-11 02:40

共2个回答

热心网友时间：2024-03-19 12:05

从1，2，3，4，5，6这六个数字中，任取三个组成无重复数字的三位数，共有A36=6×5×4=120（个）；
这三个数中有2与3，且3在2前边（与2在3前边情形相同）的有：C14×A13×A22A22=12（个），
所以，满足题意的三位数有：120-12=108个．
故选：A．

热心网友时间：2024-03-19 11:57

Dim pp As Integer
Dim pp_Num As String
Dim i As Integer, x As Integer, y As Integer, z As Integer
For x = 1 To 6
For y = 1 To 6
For z = 1 To 6
If x <> y Then
If y <> z Then
If x <> z Then
i = 100 * x + 10 * y + z
If i Mod 6 = 0 Then
pp = pp + 1
pp_Num = pp_Num & "," & i
End If
i = 0
End If
End If
End If
Next z, y, x
Debug.Print pp, pp_Num
共24个: 126,132,156,162,216,234,246,264,312,324,342,354,426,432,456,462,516,534,546,564,612,624,642,654