Combin function in excel is used to combine sets of a specified number. This function is categorized in mathematical trigonometry where we need to select two numbers where the first number should be greater than 0 and also it should be greater than the number is chosen and the second number which is Chosen Number it should also be greater than the first number and non-integer.

**Syntax**: =COMBIN(number, number_chosen)

The COMBIN function syntax has the following arguments:

**Number**(required argument) – The number should either be greater than or equal to 0. Also, it should be greater than or equal to the number_chosen. Non-integer values, if entered for this parameter, are truncated.**Number_chosen**(required argument) – This is the number of items in each of the combinations. It must be greater than or equal to 0. Non-integer values are truncated.

**Example**: Let’s look at some Excel COMBIN function examples and explore how to use the COMBIN function as a worksheet function in Microsoft Excel:

**Syntax**: =COMBIN(A17,B17)

**Result**:

Based on the Excel spreadsheet above, the following COMBIN examples would return:

**Syntax**: =COMBIN(A18,B18)**Result**: 45

**Syntax**: =COMBIN(A19,B19)**Result**: 1771

**Syntax**: =COMBIN(A20,B20)**Result**: 270725

**Syntax**: =COMBIN(A21,B21)**Result**: 5461512

**Syntax**: =COMBIN(A22,B22)**Result**: 1192052400

**Syntax**: =COMBIN(A23,B23)**Result**: 59487568920