Binomial Coefficient Combinations Formula
Choosing k items from a set of n items without regard to order:
STEP 01
Factorials
Compute n! (product of all integers from 1 up to n).
STEP 02
Denominator Factorials
Calculate k! and (n - k)!.
STEP 03
Divide
Divide n! by (k! · (n - k)!).
STEP 04
Pascal's Triangle
Matches the entry at row n, column k of Pascal's triangle.