Precalculus (6th Edition) Blitzer

Published by Pearson
ISBN 10: 0-13446-914-3
ISBN 13: 978-0-13446-914-0

Chapter 10 - Test - Page 1127: 29



Work Step by Step

We see that for each question there is a $0.25$ probability of guessing the right answer. This implies that we need to have a $0.25$ probability $4$ times in a row to get them all right. That is, $(0.25)^4$ or, $\dfrac{1}{256}$
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