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arne,bobbette,chuck,deirdre,Bobbitt and Ed and fran have reserved six seats in a row at the theater starting at an aisle seat. in how many ways can they arrange themselves? (hint: divide the task into the series of six parts shown below performed in that order)a) if A us seated first how many seats are available for him?b) now how many are available for B

Sagot :

[tex]\begin{gathered} 6\text{ people on 6 seats}\Rightarrow6\times5\times4\times3\times2\times1=720 \\ a)\text{ }6\text{ seats available} \\ b)\text{ for B}\Rightarrow5 \end{gathered}[/tex]