How-To Geek on MSN

How to use the LET function in Microsoft Excel

If you're tired of repeated calculations, hard-to-read formulas, and sluggish Excel worksheets, the LET function is your ...
MUO on MSN

Excel's REDUCE is clever, but this old-school function is what I trust

Excel multiplies the items in the first array (cost price) by the corresponding items in the second array (units sold) and then sums the results to give you the total. It is immediately clear what the ...