# COMBINA function: Description, Usage, Syntax, Examples and Explanation

## What is COMBINA function in Excel?

COMBINA function is one of the Math and Trig functions in Microsoft Excel that returns the number of combinations (with repetitions) for a given number of items.

## Syntax of COMBINA function

COMBINA(number, number_chosen)

The COMBINA function syntax has the following arguments.

**Number:**Must be greater than or equal to 0, and greater than or equal to Number_chosen. Non-integer values are truncated.**Number_chosen:**Must be greater than or equal to 0. Non-integer values are truncated.

## COMBINA formula explanation

- If the value of either argument is outside of its constraints, COMBINA returns the #NUM! error value.
- If either argument is a non-numeric value, COMBINA returns the #VALUE! error value.
- The following equation is used:
- In the equation above, N is Number and M is Number_chosen.

## Example of COMBINA function

Steps to follow:

1. Open a new Excel worksheet.

2. Copy data in the following table below and paste it in cell A1

Note: For formulas to show results, select them, press F2 key on your keyboard and then press Enter.

You can adjust the column widths to see all the data, if need be.

Formula |
Description |
Result |

=COMBINA(4,3) | Returns the number of combinations (with repetitions) for 4 and 3. | 20 |

=COMBINA(10,3) | Returns the number of combinations (with repetitions) for 10 and 3. | 220 |