document.write( "Question 900873: In a certain office building, the first 4 digits of all of the 7 digit telephone numbers are 3,7,0 and 5, in that order. How many different 7 digit telephone numbers can begin 370-5_ _ _? \n" ); document.write( "

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In a certain office building, the first 4 digits of all of the 7 digit telephone numbers are 3,7,0 and 5, in that order. How many different 7 digit telephone numbers can begin 370-5_ _ _?
\n" ); document.write( "1000 numbers from 370-5000 to 370-5999
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