从1到23,23个数字中选出5个组成一个五位数,一共有多少个 像12345和54321和21453这算一种

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从1到23,23个数字中选出5个组成一个五位数,一共有多少个 像12345和54321和21453这算一种

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kaka197547859 共回答了26个问题 | 采纳率92.3%
23*22*21*20*19=4037880
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one two three four five six seven eight nine ten
eleven twelve thirteen fourteen fifteen sixteen seventeen eighteen nineteen
twenty twenty-one twenty-two twenty-three twenty-four twenty-five twenty-six twenty-seven twenty-eight twenty-nine
thirty thirty-one thirty-two thirty-three thirty-four thirty-five thirty-six thirty-seven thirty-eight thirty-nine
forty forty-one forty-two forty-three forty-four forty-five forty-six forty-seven forty-eight forty-nine
fifty fifty-one fifty-two fifty-three fifty-four fifty-five fifty-six fifty-seven fifty-eight fifty-nine
sixty sixty-one sixty-two sixty-three sixty-four sixty-five sixty-six sixty-seven sixty-eight sixty-nine
seventy seventy-one seventy-two seventy-three seventy-four seventy-five seventy-six seventy-seven seventy-eight seventy-nine
eighty eighty-one eighty-two eighty-three eighty-four eighty-five eighty-six eighty-seven eighty-eight eighty-nine
ninety ninety-one ninety-two ninety-three ninety-four ninety-five ninety-six ninety-seven ninety-eight ninety-nine
a hundred
用VB程序编写 和数能表示1到23的5个正整数
解救kk苦难kk1年前1
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Private Sub Command1_Click()
Dim c() As Variant
Dim e As Boolean
'预设五个最小的正整数为1、2、3、4、5
For i = 3 To 11 '由题意可得第一第二个正整数必然等于1和2,第三个数最小为3,最大为23-1-2-4-5=11
For j = i + 1 To 12 '假如第三个数为3,最小的第四个数为4,最大值为23-1-2-3-5=12
For n = j + 1 To 13 '假如第四个数为4,最小的第五个数为5,最大值为23-1-2-3-4=13
If 1 + 2 + i + j + n = 23 Then
c = Array(1, 2, i, j, n, 1 + 2, 1 + i, 1 + j, 1 + n, 1 + i + j, 1 + i + n, 1 + j + n, 1 + i + j + n, 2 + i, 2 + j, 2 + n, 2 + i + j, 2 + i + n, 2 + j + n, 2 + i + j + n, 3 + i, 3 + j, 3 + n, 3 + i + j, 3 + i + n, 3 + j + n, 3 + i + j + n, i + j, i + n, i + j + n, j + n)
For l = 1 To 23
For k = 0 To UBound(c)
e = False
If c(k) = l Then e = True: Exit For
Next
If e = False Then Exit For
Next
If e = True Then Print "符合条件的有:1+2+" & i & "+" & j & "+" & n
End If
Next
Next
Next
End Sub希望没错