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JAMB - Mathematics (2005 - No. 40)

How many possible ways are there of seating seven people P,Q,R,S,T,U and V at a circular table
360
720
2520
5040

설명

(n - 1)! = (7 - 1)!
= 6!
= 6*5*4*3*2*1
= 720 ways

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