SOLUTION: Determine how many different computer passwords are possible if (a) digits and letters can be repeated , (b) digits and letters cannot be repeated. 3 digits followed by 4 lette

SOLUTION: Determine how many different computer passwords are possible if (a) digits and letters can be repeated , (b) digits and letters cannot be repeated. 3 digits followed by 4 lette

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Question 836270: Determine how many different computer passwords are possible if (a) digits and letters can be repeated , (b) digits and letters cannot be repeated.
3 digits followed by 4 letters?
Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!
DDDLLLL
a)
b)
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