Returns the factorial of the sum of values divided by the product of the values' factorials.
MULTINOMIAL(value1, [value2, ...])
value1- The first value or range to consider.
value2, ...- Additional values or ranges to consider.
MULTINOMIALis specified as taking a maximum of 30 arguments, Google Sheets supports an arbitrary number of arguments for this function.
FACTDOUBLE: Returns the "double factorial" of a number.
FACT: The FACT function returns the factorial of a number.
COMBIN: The COMBIN function returns the number of ways to choose some number of objects from a pool of a given size of objects.