To Find The Number Of Changes That May Be Rung On Twelve Bells
Multiply the numbers from 1 to 12 continually into each other, as
follow: and the last product will give the number required.
1
2
--
2
3
--
6
4
--
24
5
----
120
6
----
720
7
-----
5,040
8
------
40,320
9
-------
362,880
10
---------
3,628,800
11
----------
39,916,800
12
-----------
479,001,600