RE: Excel
Hello Hakan
Thank you for your question and welcome to the forum.
The 'common' Excel functions usually refers to the SUM, AVERAGE, MIN, MAX and COUNT functions.
To view a full list of Excel's functions, go to the Insert Function button (to the left of the formula bar), and change the Category dropdown to all.
When you select a particular function from the list, a description of what the function is designed to do will appear at the bottom of the Insert Function dialogue box.
Kind regards
Amanda