This post will guide you how to use** Excel COMBIN function** with syntax and examples in Microsoft excel.

### Description

The Excel COMBIN function returns the number of combinations for a given number of items. And you can use the COMBIN function to determine the total possible number of groups for a given number of items.

**For example,** assuming that you have 6 objects(a,b,c,d,e,f) and you can get 15 different combinations of 2 objects , the combinations are as follows:

ab ac ad ae af bc bd be bf cd ce cf de df ef

The COMBIN function is a build-in function in Microsoft Excel and it is categorized as a Math and Trigonometry Function.

The COMBIN function in Excel 2016, Excel 2013, Excel 2010, Excel 2007, Excel 2003, Excel XP, Excel 2000, Excel 2011 for Mac.

### Syntax

The syntax of the COMBIN function is as below:

=COMBIN (number, number_chosen)

Where the COMBIN function arguments are:

**number**– This is a required argument. . The number of items. It must be greater than 0, and it also must be greater than number_chosen argument.**number_chosen**– This is a required argument. The number of combinations that you want to.

**Note:**

- If either the number argument or the number_chosen argument is less than 0, then the COMBINA function will return the #NUM! Error.
- If any arguments are non-numeric, this function will return #VALUE! Error.
- If any arguments are integer values and will be truncated.
- if you want to calculate the number of combinations for a given number of items (with repetitions), you can use the COMBINA function.

**Excel COMBIN Function Examples**

The below examples will show you how to use Excel COMBIN Function to get the number of combinations for a given number objects from a set (in any order).

**1#** to get the number of combinations for 6 and 2(in any order), enter the following formula in Cell B1.

=COMBIN(6,2)

**2#** to get the number of combinations for 20 and 4(in any order), enter the following formula in Cell B2.

=COMBIN(20,4)

### Related Functions

- Excel COMBINA Function

The Excel COMBINA function returns the number of combinations for a given number of items and it includes repetitions. The syntax of the COMBINA function is as below**:**=COMBINA(number, number_chosen)…