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OpenStudy (anonymous):
can somebody please help A phone number contains 7 digits. How many different numbers can be made using the digits 0–9 if the first digit is not 0 and none of the digits can be repeated? 10 × 9^6 9 × 10^7 9 × 10^6 10^7
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OpenStudy (anonymous):
@Thesmarterone
OpenStudy (anonymous):
@TheSmartOne
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