document.write( "Question 358997: How many four digit numbers begin with odd digit and end with even digit. \n" ); document.write( "
Algebra.Com's Answer #256169 by robertb(5830)\"\" \"About 
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There are 5 ways of filling the thousands place {1,3,5,7,9}.
\n" ); document.write( "There are 10 ways of filling the hundreds place {0,1,2,3,4,5,6,7,8,9}.
\n" ); document.write( "There are 10 ways of filling the tens place {0,1,2,3,4,5,6,7,8,9}.
\n" ); document.write( "There are 5 ways of filling the hundreds place {0,2,4,6,8}.
\n" ); document.write( "Therefore there are \"5%2A10%2A10%2A5+=+2500\"four digit numbers beginning with anodd digit and ending with an even digit.
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