Q. In how many ways can 5 keys be put in a ring?
A) $\frac{1}{2}4!$
B) $\frac{1}{2}5!$
C) $4!$
D) $5!$
Explanation
The correct answer is Option A: $\frac{1}{2}4!$.
A detailed explanation for this question is being prepared.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.