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Combination problem, explanation needed please!

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Junior | Next Rank: 30 Posts
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Combination problem, explanation needed please!

by babachal » Fri Jun 13, 2008 1:38 pm
The president of a country and 4 other dignitaries are scheduled to sit in a row on the 5 chairs. If the president must sit in the center chair, how many different seating arrangements are possible for the 5 people?
(A) 4
(B) 5
(C) 20
(D) 24
(E) 120
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by beeparoo » Fri Jun 13, 2008 1:50 pm
If the president must always sit in the centre seat, then the 4 remaining dignitaries can be arranged around him in 4! ways.

4! = 4x3x2x1 = 24

I choose D
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by chidcguy » Fri Jun 13, 2008 2:54 pm
One position is fixed. 4 people in 4 places in 4! ways
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