The MOD function in Microsoft Excel lets you work out whether one number is divisible by another. If it's not, it tells you what's left over. For example, if you divide 3 by 2, the MOD function will ...

An optimization problem is one where you have to make the best decision (choose the best investments, minimize your company’s costs, find the class schedule with the fewest morning classes, or so on).

What if you could solve intricate Excel problems with a single, elegant formula? Imagine replacing a web of complex, error-prone calculations with one streamlined function that handles it all. Enter ...