Question: Counting: Cellphone Passcodes The Viewpoint in this section, on page 172, describes the topic of cellphone passcodes used to prevent unwanted individuals from accessing your

Counting: Cellphone Passcodes The Viewpoint in this section, on page 172, describes the topic of cellphone passcodes used to prevent unwanted individuals from accessing your information. Each digit of the passcode must be a number from 0 to 9 where each digit can be repeated. Use the appropriate counting rule to determine the possible number of 4-digit passcodes.

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