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math ,correction
consider determining how many possible phone numbers are in an area code (repeated numbers allowed) is this a combination, permutation or neither.... my answer neither combination. combination. wouldn't it be neither because we
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a phone company wants to create some new area codes. Each new area code will have 3 numbers. Using the digits 1, 5, and 7 only once in each code, how many new codes can the phone company create?
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a phone company wants to create some new area codes. each area code will be 3 numbers . using the digits 1,5,and 7 only once in each code, how many codes can the phone company create?
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