MULTINOMIAL

MULTINOMIAL(number1 [,number2] [..])

Returns the number of permutations for a given number of items (with duplicates).

number1	The first number.
number2	(Optional) The second number.

REMARKS

* This is called the Multinomial Coefficient.
* There is no Excel function for a multinomial distribution.
* The multinomial coefficient is an extension of the Binomial Coefficient.
* The multinomial coefficient is used to find the "correct" number of permutations when you have duplicate values.
* The multinomial is the ratio of the factorial of a sum of values to the product of the factorials.
* If any argument is less than one, then #NUM! is returned.
* If any argument is not numeric, then #VALUE! is returned.
* You can have a maximum of 255 arguments.
* You can use the COMBIN function to return the number of combinations for a given number of items (without repetition).
* You can use the FACT function to return the factorial of a positive whole number.
* link - statisticshowto.com/multinomial-coefficient
* For the Microsoft documentation refer to support.microsoft.com

	A
1	=MULTINOMIAL(2, 3, 4) = 1260
2	=MULTINOMIAL(1, 2, 3) = 60
3	=MULTINOMIAL(3, 2, 1) = 60
4	=MULTINOMIAL("3", "2", 1) = 60
5	=FACT(3+2+1)/(FACT(3)*FACT(2)*FACT(1)) = 60
6	=FACT(SUM(3, 2, 1))/(FACT(3)*FACT(2)*FACT(1)) = 60
7	=MULTINOMIAL(3, -2, 1) = #NUM!
8	=MULTINOMIAL(3, 2, "some text") = #VALUE!