Physics for Scientists and Engineers: A Strategic Approach with Modern Physics (3rd Edition)

Published by Pearson
ISBN 10: 0321740904
ISBN 13: 978-0-32174-090-8

Chapter 39 - Wave Functions and Uncertainty - Exercises and Problems - Page 1174: 4

Answer

$\bf 231$

Work Step by Step

A regular deck of cards with 52 cards has 12 picture cards (4 Jacks, 4 Queens, and 4 Kings). So the probability of drawing one picture card is $$P_{\rm picture }=\dfrac{12}{52}\times 100\%=\color{red}{\bf 23.08}\%\approx 23.1\%$$ We have here 1000 decks of cards, so the expected number of drawing a picture card out of 1000 decks of cards is $$N= \dfrac{12}{52}\times 1000 \approx \color{red}{\bf 231} \;\rm card$$
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