What does factorial do to a number, exactly? Does it multiply it by something? I don't know. . . Please answer my question.
N! = N * N-1 * N -2 *...... *3 * 2 * 1
So.....for instance...
4! = 4 * 3 * 2 * 1 = 24
And
5! = 5 * 4 * 3 * 2 * 1 = 120
