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Calculate combinations with duplication

Calculate combinations with duplication - Microsoft Excel Tutorial

From the course: Learning Excel: Data Analysis

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Calculate combinations with duplication

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- [Instructor] In the previous movie, I described how to calculate the number of possible combinations that are allowed from a set of items when you select a subset. However, we assumed that duplication was not allowed, so you couldn't pick two of the same thing. In this movie, I'll show you how to calculate combinations where duplication is allowed, so you can select two or more of the same item. As an example, if we have a gift basket with three items, instead of having your employee grab three distinct items and making sure they're all different, they could grab anything they wanted so they could have two, or even three of the same thing. However, we're dealing with combinations not permutations, so the order of the items still doesn't matter. They'd probably get moved around in the basket or the gift box anyway. So how are we going to approach this? Well, the idea is that we need to determine how many unique groups are possible when choosing three of five products when repetition…

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