excel: check for duplicate rows based on 3 columns and keep one row

Question

This might be a bit much to ask but I\'m wondering if the following is possible. this is all based on my initial question on How do I copy a range of formula values and past

Answer 1

This code works for me (lastrow based on this asnwer by @SiddharthRout):

Sub test()

    Dim lastrow As Long

    With ThisWorkbook.Worksheets("Sheet1")
        If Application.WorksheetFunction.CountA(.Cells) <> 0 Then
            lastrow = .Cells.Find(What:="*", _
                          After:=.Range("A1"), _
                          Lookat:=xlPart, _
                          LookIn:=xlFormulas, _
                          SearchOrder:=xlByRows, _
                          SearchDirection:=xlPrevious, _
                          MatchCase:=False).Row
        Else
            lastrow = 1
        End If

        'Array(1, 2, 16) means 1 - for A, 2 for B and 16 for P columns
        .Range("A1:P" & lastrow).RemoveDuplicates Columns:=Array(1, 2, 16), _
            Header:=xlYes
    End With
End Sub