SOLUTION: Coloso University uses a 5-digit restriction to distribute mails and packages. How many ZIP codes are there if there are no digit restrictions? How many ZIP codes are possible if r

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Question 1175610: Coloso University uses a 5-digit restriction to distribute mails and packages. How many ZIP codes are there if there are no digit restrictions? How many ZIP codes are possible if repetition is not allowed?
Answer by ikleyn(52780)   (Show Source): You can put this solution on YOUR website!
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Coloso University uses a 5-digit ZIP-code to distribute mails and packages.
How many ZIP codes are there if there are no digit restrictions? How many ZIP codes are possible if repetition is not allowed?
~~~~~~~~~~~~~ 


 = 100,000  codes, if repetition is allowed.

                 Because you have 10 opportunities for digits in EACH POSITION, independently.



10*9*8*7*6 =  30,240  codes, if repetition is not allowed.

Solved.


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The posts from you should/must come in ideal form,  every time.   ALWAYS.



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