The access code for a cars security system consists of four digits. Each digit can be any

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The access code for a car’s security system consists of four digits. Each digit can be any number from 0 through 9.

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How many access codes are possible when 1. each digit can be used only once and not repeated?
2. each digit can be repeated?
3. each digit can be repeated but the first digit cannot be 0 or 1?

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Elementary Statistics Picturing The World

ISBN: 9781292260464

7th Global Edition

Authors: Betsy Farber, Ron Larson

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