Lecture 5 Probability and Statistics.pdf
A club consists of four members. How many ways are there of selecting three officers: president, secretary and treasurer? It is evident that the order in which 3 officers are to be chosen, is of significance. Thus there are 4 choices for the first office, 3 choices for the second office, and 2 choices for the third office.
A club consists of four members. How many ways
are there of selecting three officers: president, secretary and
treasurer?
It is evident that the order in which 3 officers are to be
chosen, is of significance.
Thus there are 4 choices for the first office, 3 choices
for the second office, and 2 choices for the third office.
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