This function calculates the number of possible combinations for a specified number of items.

Syntax

COMBIN(k,n)

Arguments

This function has these arguments:

Argument	Description
k	Number representing the number of items; if not an integer, the number is truncated; must be positive and greater than or equal to n
n	Number of items in each possible permutation; if not an integer, the number is truncated; must be positive

Remarks

A combination is any set or subset of items, regardless of the internal order of the items. Contrast with permutation (the PERMUT function).

The number of combinations is calculated as follows:

Data Types

Accepts numeric data for both arguments. Returns numeric data.

Examples

COMBIN(C4,B2)

COMBIN(B3,5)

COMBIN(R1C2,2)

COMBIN(8,2) gives the result 28

COMBIN(100,3) gives the result 161700

Version Available

This function is available in product version 1.0 or later.

See Also

PERMUT | Math and Trigonometry Functions