Enjoy these detailed instructions of all Logical functions in Microsoft Excel 2013 that no one should be without. These instructions are accompanied by descriptive screen shots. Intended to be reference material for beginners and intermediate users. Make Excel work harder for you so that you can become a greater asset to yourself and to your employer. Some of these functions will leave you accidentally impressive to many of your peers. So let's get started Functions Covered: And False If IfError IfNA Not Or True XOR