COMB Function

Computes the number of combinations of n elements taken r at a time

Category: Mathematical

Syntax

COMB ( n, r )

Arguments

n

• is an integer that represents the total number of elements from which the sample is chosen .

r

• is an integer that represents the number of chosen elements.

• Restriction: r ‰ n

Details

The mathematical representation of the COMB function is given by the following equation:

with n ‰ 0, r ‰ 0, and n ‰ r .

If the expression cannot be computed, a missing value is returned.

Examples

SAS Statements	Results
x=comb(5,1);	5

See Also

Functions:

• 'FACT Function' on page 517

• 'PERM Function' on page 714