Mathematics, 05.12.2019 02:31 coxb234
In a certain country telephone numbers have 9 digits. the first two digits are the area code (03) and are the same withina given area. the last 7 digiys are the local numner and cannot begin with 0.how many different telephone numbers are possible within a given area code in this country?
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In a certain country telephone numbers have 9 digits. the first two digits are the area code (03) an...
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