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ÔÚC »·¾³ÏÂÎһᣡPrivate Sub Command1_Click()
Dim n As Integer
Dim sum As Double
Dim p As Single
Dim i As Integer
Dim j As Integer
Dim s As Double
p = 1
sum = 1
For i = 0 To n Step 1
    j = i
    While (j >= 1) ¡® ²»ÖªµÀ
      p = 1
      p = p * j
      j = j - 1
    Wend
    s = 1 / p
    sum = sum + s
   
   
Next i
   
   
Label1.Caption = sum

End Sub

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VB code:

<script language='vbs'>
dim a()
m=4
redim a(m-2)
function recursion(n)
if n=1 then
a(0)=m
for i=1 to m-2
a(i)=(m-i)*a(i-1)
'msgbox "a=" & a(i) & ",i=" & i
next
recursion=a(0)
exit function
end if
b=recursion(n-1)


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Private Sub Check1_Click()
If Check1.Value = 1 Then
DTP1.Enabled = True
Else
DTP1.Enabled = False
End If
End Sub
Private Sub Check2_Click()
If Check2.Value = 1 Then
DTP2.Enabled = True
Else ......

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