COMB Function

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

Category: Combinatorial

Syntax

COMB(n,r)

Required Arguments

n

is a nonnegative integer that represents the total number of elements from which the sample is chosen.

r

is a nonnegative 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:
equation
In the preceding equation, n ≥ 0, r ≥ 0, and n≥ r.
If the expression cannot be computed, a missing value is returned. For moderately large values, it is sometimes not possible to compute the COMB function.

Example

The following statement produces this result.
SAS Statement
Result 
x=comb(5,1);
 
5

See Also

Functions:
FACT Function
PERM Function
LCOMB Function
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