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This UDF will generate x unique random numbers between any 2 numbers you specify.
Many thanks to J.E. McGimpsey for modifying this to work on more than 10 numbers.
Function RandLotto(Bottom As Integer, Top As Integer, _ Amount As Integer) As String Dim iArr As Variant Dim i As Integer Dim r As Integer Dim temp As Integer Application.Volatile ReDim iArr(Bottom To Top) For i = Bottom To Top iArr(i) = i Next i For i = Top To Bottom + 1 Step -1 r = Int(Rnd() * (i - Bottom + 1)) + Bottom temp = iArr(r) iArr(r) = iArr(i) iArr(i) = temp Next i For i = Bottom To Bottom + Amount - 1 RandLotto = RandLotto & " " & iArr(i) Next i RandLotto = Trim(RandLotto) End Function
To use this UDF push Alt+F11 and go
Insert>Module and paste in the code. Push
Alt+Q and save. The Function will appear under "User
Defined" in the Paste Function dialog box (Shift+F3).
Use the Function in any cell as shown below.
This would produce 8 unique random numbers between 1 and 20
See Also: Excel Duplication Manager Add-in | Excel Number Manager Add-in | Excel Text Manager Add-in | Excel Named Range Add-in Manager | Excel OzGrid Plus Add-in | Excel Time Sheet | Excel Time Wage and Pay book
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