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April 7th, 2017, 09:20 PM   #1
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Combinations in Algebra

A bank requires its customers to use a 4-digit pin number for their ATM passwords. Distinguish how many different passwords that customers can choose from. Show and explain all of your work.

Could anyone tell me how you would set up this problem?
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April 7th, 2017, 09:35 PM   #2
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think of the pin as a 4 digit base 10 number
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