What a strange request!
Private Sub Workbook_SheetSelectionChange(ByVal Sh As Object, ByVal Target As Range)
Dim ws As Worksheet
On Error GoTo ws_exit:
Application.EnableEvents = False
If IsNumeric(Right(Sh.Name, 1)) Then
For Each ws In ThisWorkbook.Worksheets
If IsNumeric(Right(ws.Name, 1)) Then
If UCase(Left(ws.Name, Len(ws.Name) - 1)) = _
UCase(Left(Sh.Name, Len(Sh.Name) - 1)) Then
If ws.Name <> Sh.Name Then
ws.Activate
ws.Range(Target.Address).Select
Sh.Activate
End If
End If
End If
Next ws
End If
ws_exit:
Application.EnableEvents = True
End Sub
This is workbook event code. To input this code, right click on the Excel icon on the worksheet (or next to the File menu if you maximise your workbooks), select View Code from the menu, and paste the code