Combination - HP 12c Solutions Handbook

10
4

Combination

A combination is a selection of one or more of a set of distinct objects
without regard to order. The number of possible combinations, each
containing n objects, that can be formed from a collection of m distinct
objects is given by:
Where m, n are integers and 69 m n 0.
Use the following HP-12C to calculate the number of possible
combinations.
KEYSTROKES
CLEAR
0
0
0
n: Unused
PV: Unused
5,040.00
mCn =
00
REGISTERS
P .
10 4
m!
------------------------ -
m n – !n!
DISPLAY
00-
01- 44
02-
03- 43
04- 43
05- 45
06-
07- 43
08- 45
09- 43
10-
11-
12-43, 33
i: Unused
PMT: Unused
121
0
34
3
36
0
30
3
0
3
20
10
00