Q. In how many ways $n$ books can be arranged in a row so that two specified books are not together?
A) $n! - (n - 2)!$
B) $(n - 1)!(n - 2)$
C) $n! - 2(n - 1)$
D) $(n - 2)n!$
Explanation
The correct answer is Option B: $(n - 1)!(n - 2)$.
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.