Page 105 - Probability Demystified
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6
CHAPTER
The Counting Rules
Introduction
Since probability problems require knowing the total number of ways one or
more events can occur, it is necessary to have a way to compute the number
of outcomes in the sample spaces for a probability experiment. This is
especially true when the number of outcomes is large. For example, when
finding the probability of a specific poker hand, it is necessary to know the
number of different possible ways five cards can be dealt from a 52-card deck.
(This computation will be shown later in this chapter.)
In order to do the computation, we use the fundamental counting rule, the
permutation rules, and the combination rule. The rules then can be used to
compute the probability for events such as winning lotteries, getting a specific
hand in poker, etc.
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