UCLA
EE131A (KY)
1
EE 131A
Probability
Professor Kung Yao
Electrical Engineering Department
University of California, Los Angeles
M.S. On-Line Engineering Program
Lecture 3 - 1

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UCLA
EE131A (KY)
2
Lecture 3 -1:
More on counting (1)
General Principle of Counting
The most general principle of counting in k
experiments follows:
Suppose the first exp. has:
n
1
possible outcomes;
The second exp. has:
n
2
possible outcomes;
…
The k-th exp. has:
n
k
possible outcomes.
The total number of possible outcomes is given
by
N
k
= n
1
x n
2
x …x n
k .
(1)