document.write( "Question 1080905: How many three-digit counting numbers less than 500 have digits that are all odd? \n" ); document.write( "

Algebra.Com's Answer #694994 by ikleyn(52818) $\"\"$ $\"About$

You can put this solution on YOUR website!
.
\n" ); document.write( "

\r\n" );
document.write( "In the 1-st (leftmost) position the digits are 1 or 3 (2 options).\r\n" );
document.write( "\r\n" );
document.write( "In the next, 2-nd position, the digits are 1, or 3, or 5, or 7, or 9 (5 options).\r\n" );
document.write( "\r\n" );
document.write( "In the last, 3-rd position, the digits are 1, or 3, or 5, or 7, or 9 (5 options).\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "In all, there are 2*5*5 = 50 such numbers.\r\n" );
document.write( "

\r
\n" ); document.write( "\n" ); document.write( " \n" ); document.write( "

\n" );