#### Answer

$1$

#### Work Step by Step

We know that $probability=\frac{number \ of \ good \ outcomes}{number\ of\ all\ outcomes}$. The probability of "death is a certainty" is 1, which means that every person will die once.

Published by
Pearson

ISBN 10:
0-32192-459-2

ISBN 13:
978-0-32192-459-9

$1$

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