document.write( "Question 281887: How many 7-digit telephone numbers can be put on the 318 area code if no number can begin with 0, the 2nd digit must be odd, the 3rd digit must be even, and there are no other restrictions? \n" ); document.write( "

Algebra.Com's Answer #204739 by josmiceli(19441) $\"\"$ $\"About$

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The 1st digit can be 1-9 or 9 possible numbers
\n" ); document.write( "The 2nd digit can be 1,3,5,or 9 or 4 possible numbers
\n" ); document.write( "The 3rd digit can be 0,2,4,or 8 or 4 possible numbers
\n" ); document.write( "The remaining digits can be 0-9 or 10 possible numbers
\n" ); document.write( "There are $\"9%2A4%2A4%2A10%2A10%2A10%2A10+\"$ = 1,440,000 7-digit phone numbers
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