document.write( "Question 97762: Chapter 5: A Survey of Probability ConceptsISBN : 0072868244 Author : Douglas A. Lind, William G. Marchal, Samuel A. Wathen
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document.write( "copyright © 2004 The McGraw-Hill Companies \r
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document.write( "exercise 42;
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document.write( "A telephone number consists of seven digits, the first three representing the exchange. How many different telephone numbers are possible within the 537 exchange. \n" );
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Algebra.Com's Answer #71134 by ManMan(1)![]() ![]() ![]() You can put this solution on YOUR website! How many different telephone numbers are possible within the 537 exchange. \r \n" ); document.write( "\n" ); document.write( "537 _ _ _ _\r \n" ); document.write( "\n" ); document.write( "The blanks can be the numbers: 0 1 2 3 4 5 6 7 8 OR 9.\r \n" ); document.write( "\n" ); document.write( "There are 10 choices in total; Multiply the numbers to get your answer: \n" ); document.write( "10*9*8*7*6*5*4*3*2*1 \n" ); document.write( "10*9=90 \n" ); document.write( "90*8=720 \n" ); document.write( "720*7=5040 \n" ); document.write( "5040*6=30240 \n" ); document.write( "30240*5=151200 \n" ); document.write( "151200*4=604800 \n" ); document.write( "604800*3=1814400 \n" ); document.write( "1814400*2=3628800 \n" ); document.write( "3628800*1=3628800\r \n" ); document.write( "\n" ); document.write( "The final answer is: 3,628,800 \n" ); document.write( " |