It is used in the formula for (*) permutations and combinations, and the number of ways to arrange n elements is given by this function of n.
Stirling's approximation is used to calculate very large terms of this operation. The reciprocals of its terms converge to e, and this operation is defined at zero as one. It is used in the formula for (*) permutations and combinations, and the number of ways to arrange n elements is given by this function of n. For 10 points, name this operation where consecutive numbers are multiplied together, symbolized by an exclamation point.
Stirling's approximation is used to calculate very large terms of this operation.
factorial (prompt on exclamation point before mentioned)