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At a certain university in the U.S., all phone numbers are 7-digits long and start with either 824 or 825. (a) How many different phone numbers are possible
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At a certain university in the U.S., all phone numbers are 7-digits long and start with either 824 or 825. (a) How many different phone numbers are possible

User Flowryn
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1 Answer

5 votes

Explanation:

there are different many numbers

User Andrey Korolyov
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