document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1133838>Question 1133838</A>: <I><SPAN STYLE=\"word-break: break-all;\"> three-digit numbers are formed using the digits 2, 4, 5, and 7, with repetition of digits allowed. how many such numbers can be formed if <BR>\n" );
document.write( "(a) the numbers are less than 700<BR>\n" );
document.write( "(b) the numbers are even<BR>\n" );
document.write( "(c) the numbers are divisible by 5 </SPAN>\n" );
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document.write( "(a) the numbers are less than 700<br><BR>\n" );
document.write( "3 choices for the hundreds digit; 4 choices each for the other two: 3*4*4 = 48<br><BR>\n" );
document.write( "(b) the numbers are even<br><BR>\n" );
document.write( "2 choices for the units digit; 4 choices each for the other two: 2*4*4 = 32<br><BR>\n" );
document.write( "(c) the numbers are divisible by 5<br><BR>\n" );
document.write( "1 choice for the units digit; 4 choices each for the other two: 1*4*4 = 16<br><BR>\n" );
document.write( "Total 48+32+16 = 96 </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );