Sharp W Series manual Permutations, Combinations, Ppl Ic At Io N S

Permutations, Combinations

T his 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 , AC B, BAC , BC A, C AB, and C BA.

The calculation equation is 3P3 = 3 x 2 x 1 = 6 (ways).

T his 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 C B.

T he calculation equation is 3C 2.

<Example>

O per ation

6 4

6 4

D isplay

DEG

DEG

A PPL IC AT IO N S:

Used in statistics (probability calculations) and in simulation hypoth- eses in fields such as medicine, pharmaceutics, and physics. Also, can be used to determine the chances of winning in lotteries.

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