Excel and Google Sheets have three functions to calculate the internal rate of return: IRR, XIRR, and MIRR. Learn how these functions can calculate investment returns.

Credit: BlackJack3D/E+ via To many, AI is just a horrible Steven Spielberg movie. To others, it's the next generation of learning computers. But what is artificial intelligence, exactly?

If Excel filter is not working after certain row, for merged cells, on large files or on protected sheet, then see this post.