# COMBIN

The COMBIN function is used to calculate the number of combinations for a given number of items selected from a set without considering the order. It is commonly used in statistics, probability, and combinatorics to calculate combinations of elements in a set.

## Syntax

=COMBIN(`n`

, `k`

)

`n` | The total number of items in the set. | |

`k` | The number of items to be chosen for each combination. | |

`n` | The total number of items in the set. | |

`k` | The number of items to be chosen for each combination. | |

`short_description` | A brief description of the function. | |

`syntax` | The syntax of the function | including the function name and its arguments. |

`arguments` | The parameters or inputs required by the function | along with their descriptions. |

## About COMBIN

When dealing with various combinations of elements from a set, COMBIN in Excel comes to the rescue. It's a handy tool for calculating the number of ways to choose a certain number of items from a larger set, without concern for the order in which they are chosen. Whether you're exploring possibilities in statistics, working on probability scenarios, or investigating combinatorial aspects, the COMBIN function supports your endeavors by swiftly generating these crucial numeric values. By providing the total number of items in the set and the number of items to be chosen for each combination, COMBIN delivers the count of unique ways the items can be combined, disregarding their arrangement order. Dive into the world of sets, combinations, and permutations with confidence, knowing that COMBIN simplifies your computational requirements and yields precise results.

## Examples

If you have 10 different books on a shelf and want to choose 3 to read, you can use the COMBIN function to calculate the number of different combinations of books you could choose from the shelf. The formula would be: =COMBIN(10, 3). This will give you the total number of unique combinations of 3 books from the set of 10.

Suppose you have 8 different colors of paint, and you want to choose 2 to mix for a new color. You can employ the COMBIN function to calculate the number of unique combinations of 2 colors from the set of 8. The formula would be: =COMBIN(8, 2). This will provide you with the total count of distinct combinations of 2 paint colors from the available palette.

## Questions

**What does the COMBIN function actually calculate?**

The COMBIN function calculates the number of combinations of `k`

items that can be selected from a set of `n`

items.

**Can the COMBIN function be used to calculate permutations?**

No, the COMBIN function is specific to calculating combinations, where the order of selection is not considered. For calculating permutations, which involve the arrangement of items in a specific order, the PERMUT function should be used.

**What is the maximum value that**

`n`

and `k`

can take in the COMBIN function?The maximum values for `n`

and `k`

in the COMBIN function depend on the computational capabilities of Excel, but theoretically, they can be any non-negative integers. However, it's essential to consider the practical significance and computational feasibility when choosing the values for `n`

and `k`

.

## Related functions

PERMUT

FACT

BINOM.DIST

BINOM.INV