Use our Combination without Repetition Calculator to quickly determine the number of possible selections from a larger set where the order of selection does not matter and items cannot be chosen more than once. Ideal for solving problems in probability, statistics, and various mathematical scenarios. Simply input your total number of items and the number of items to choose, and get instant results.
Formula:
The formula for combinations without repetition is:
C(n, r) = n! / (r! * (n-r)!)
Where:
n = Total number of items in the set
r = Number of items to choose from the set