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Number of ways 4 people can sit at a round table:
A4!
B4
C4!/2
D(4-1)! = 3! = 6
Answer & Solution
Correct answer: D. (4-1)! = 3! = 6
Circular arrangements: (n-1)!. Fixing one person to eliminate rotational equivalents, remaining (n-1) arrange linearly. For 4 people: 3! = 6. If reflection also matters (necklaces): (n-1)!/2.
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