Q. The number of arrangements of the letters of the word BANANA in which the two N’s do not appear adjacently, is
A) 40
B) 60
C) 80
D) 100
Explanation
(a)
Required number of arrangements
$= \frac{6!}{2!3!} - \frac{5!}{3!} = 60 - 20 = 40$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.