document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1117733>Question 1117733</A>: <I><SPAN STYLE=\"word-break: break-all;\"> How many ways can 5 people A, B, C, D, E sit in a row if A must be to the left of B but not necessarily next to each other? </SPAN>\n" );
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document.write( "60.<br><BR>\n" );
document.write( "Consider the 5!=120 ways the 5 people can sit in a row.<br><BR>\n" );
document.write( "For every arrangement in which A is to the left of B, there is an arrangement with all the other people in the same places but with A and B switched, so that B is to the left of A.<br><BR>\n" );
document.write( "So exactly half of the 120 arrangements have A to the left of B. </SPAN>\n" );
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