To do Alt + M U C on Mac in Excel, download and install Accelerator Keys, then press Option, followed by M, U, C.
Command: Count Numbers
This is how to do Alt + M U C on Mac in Excel with Accelerator Keys, the native ribbon and alt key shortcut solution for Mac users who get more done with Excel.
Alt + M U C inserts a COUNT formula in the selected cell. This function counts the number of cells in a range that contain numeric values, ignoring empty cells and text. It’s useful for quickly determining how many numerical entries exist in a dataset.