Combinations without repetition

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

syntax

Combinations(number_all_objects; number_chosen_objects)

number_all_objects (n) - number of all objects

number_chosen_objects (k) - number objects in combination

returns

integer number >= 0

info

- fractional number are converted into integer,

- number_all_objects must be greater than number_chosen_objects.

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

example

Combinations(10;3) = 120

example 2

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

Combinations(8;2) = 28 groups.