document.write( "Question 840576: Five persons, A, B, C, D, E, are going to speak at a meeting. In how many orders can they take their turns if B must speak after A? \n" ); document.write( "

Algebra.Com's Answer #506289 by ewatrrr(24785) $\"\"$ $\"About$

You can put this solution on YOUR website!

 
\n" );
document.write( "Hi,
\n" );
document.write( "Re reply: thanks for clarifying that Bill does not have to speak directly after A
\n" );
document.write( "A first: 24 ways (4!)
\n" );
document.write( "B first: N/A
\n" );
document.write( "C first: 12 ways 
\n" );
document.write( "CA 3!, CB N/A, CD: CDA 2!, CDB N/A, CDEAB 1, CE: CEA 2!, CEB N/A, CEDAB 1 
\n" );
document.write( "D first: 12 ways
\n" );
document.write( "E first: 12 ways 
\n" );
document.write( "Five persons, A, B, C, D, E, are going to speak at a meeting. 
\n" );
document.write( "In how many orders can they take their turns if B must speak after A? 4!
\n" );
document.write( "Think of AB as one Unit:   \n" );
document.write( "

\n" );