One thought on “How to Install and Activate Add Ins in Excel 2010

  1. r.munidasa

    i have a problem of marking down data in a column by 25% and again undoing it.i have a costing program in excel 2010 where i have vb coding too done on trial and error basis.(it works well -and learning more from your videos)
    (i have used formula (=cell name* (1-25%)it gives 255 markdown but undone doesn’t give the original price!)


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