Combinations without repetition |

Returns number of combinations without repetition for given number of objects.

Combinations(number_all_objects; number_chosen_objects)

number_all_objects (n) - number of all objects

number_chosen_objects (k) - number objects in combination

integer number >= 0

- fractional number are converted into integer,

- number_all_objects must be greater than number_chosen_objects.

Formula of this function: *n!/(k!*(n-k)!)*

Combinations(10;3) = 120

How much of two-persons groups can be create using 8 persons?

Combinations(8;2) = 28 groups.