Physics: Principles with Applications (7th Edition)

Published by Pearson
ISBN 10: 0-32162-592-7
ISBN 13: 978-0-32162-592-2

Chapter 17 - Electric Potential - Problems - Page 498: 64

Answer

They have two fingers on each hand for a total of 4 fingers.

Work Step by Step

The aliens used a base 4 counting system, because they expressed 5 as "11". This is a “1” in the ones place and a “1” in the fours place. If their number system evolved like ours, they use base 4 because they have 4 fingers in all.
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