A) \[\frac{1}{2}4!\]
B) \[\frac{1}{2}5\,!\]
C) \[4\,!\]
D) \[5\,!\]
Correct Answer: A
Solution :
Required number of ways = \[\frac{1}{2}(5-1)\ !=\frac{4\ !}{2}\]. {Since clockwise and anticlockwise are same in case of ring}.
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