Letters of the word DIRECTOR are arranged in such a way that all the vowels come together. Find out the total number of ways for making such arrangement.	Options:
A) 4320 B) 2720 C) 2160 D) 1120 E) None of these
Taking all vowels (IEO) as a single letter (since they come together) there are six letters   Hence no. of arrangements = 6!⁄2! × 3! = 2160   [Three vowels can be arranged 3! ways among themselves, hence multiplied with 3!.]   Answer 2160
<result>C</result>
Letters of the word DIRECTOR are arranged in such a way that all the vowels come together. Find out the total number of ways for making such arrangement.