document.write( "Question 1113019: A local telephone number in an office is given by a sequence of three digits. How
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document.write( "manydifferent telephone numbers are there if the first digit cannot be 0?
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document.write( "Select one:
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document.write( "a. 27
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document.write( "b. 1000
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document.write( "c. 900
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document.write( "d. 30 \n" );
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Algebra.Com's Answer #728068 by ikleyn(52788)![]() ![]() You can put this solution on YOUR website! . \n" ); document.write( " \r\n" ); document.write( "9*10*10 = 900.\r\n" ); document.write( "\r\n" ); document.write( "\r\n" ); document.write( "Any of 9 digits in the first position;\r\n" ); document.write( "\r\n" ); document.write( "Any of 10 digits in the second position,\r\n" ); document.write( "\r\n" ); document.write( "and any of 10 digits in the third position.\r\n" ); document.write( "\r \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |