If the person has same neighbor to the left and right , Seating is considered same. By using circular permutation, the answer is 2.
What do you mean by permutation?
A conceivable order or arrangement for a group of items, especially one among several alternatives.
What is the formula to calculate permutation?
The formula for permutation is:
[tex]P(n,r)= \frac {n!}{(n-r)!}[/tex] (Permutation)
[tex]P(n)=(n-1)![/tex] (Circular permutation)
Total number of people=5
Since the orientation with same neighbor to left and right is considered same. We consider 3 people as 1 which represent a person with neighbors.
Total people used in circular permutation=3
P(3)= (3-1)!
=2!
=2.
To learn more about circular permutations visit:
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