24
<Example 1>
Operation Display
6 4
6 4
Permutations, Combinations
This function finds the number of different possible orderings in selecting
r objects from a set of n objects. For example, there are six different
ways of ordering the letters ABC in groups of three letters—ABC, ACB,
BAC, BCA, CAB, and CBA.
The calculation equation is
3
P
3
= 3 x 2 x 1 = 6 (ways).
This function finds the number of ways of selecting r objects from a set of
n objects. For example, from the three letters ABC, there are three ways
we can extract groups of two different letters—AB, AC, and CB.
The calculation equation is
3
C
2
.
APPLICATIONS:
Used in statistics (probability calculations) and in simulation hypotheses
in fields such as medicine, pharmaceutics, and physics. Also, can be used
to determine the chances of winning in lotteries.
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