"In how many different ways can the letters of the word OPTICAL be arranged in
Channel: Doubtnut
Date: 05/04/2020

"In how many
 different ways can the letters of the word OPTICAL be arranged in such a way
 that the vowels always come together?
(a)
 120 (b) 720 (c) 2160 
 (d) 4320 (e) None of these"