In how many ways can the letters of the word JUPITER be arranged in a row so that the vowels appear in alphabetic order?
The correct option is C840
Since the order of vowels will always remain the same despite these occupying different positions → if we assume each vowel as X then our question is same as asking "arrange JPTRXXX" ⇒ in all 7!3! ways. ⇒ Choice (d) is the right answer