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Chapter 1: Q. 1.17 (page 16)
Seven different gifts are to be distributed among children. How many distinct results are possible if no child is to receive more than one gift?
The possible number of distinct results are.
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An elevator starts at the basement with people (not including the elevator operator) and discharges them all by the time it reaches the top floor, number. In how many ways could the operator have perceived the people leaving the elevator if all people look alike to him? What if the people consisted of men and women and the operator could tell a man from a woman?
How many outcome sequences are possible when a die is rolled four times, where we say, for instance, that the outcome is 3, 4, 3, 1 if the first roll landed on 3, the second on 4, the third on 3, and the fourth on 1?
The game of bridge is played by players, each of who is dealt cards. How many bridge deals are possible?
A person has friends, of whom will be invited to a party.
(a) How many choices are there if of the friends are feuding and will not attend together?
(b) How many choices if of the friends will only attend together?
If people are to be divided into committees of respective sizes and how many divisions are possible?
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