HP 12C - Combination

121
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.
10
4
5,040.00
10
P
4
.
KEYSTROKES DISPLAY
CLEAR
00-
0
01- 44 0
02- 34
03- 43 3
04- 43 36
0
05- 45 0
06- 30
07- 43 3
0
08- 45 0
09- 43 3
10- 20
11- 10
00
12-43, 33 00
REGISTERS
n: Unused i: Unused
PV: Unused PMT: Unused
mCn
m!
mn–()!n!
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=