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Question

In how many ways can the letters of the word JUPITER be arranged in a row so that the vowels appear in alphabetic order?
  1. 736
  2. 768
  3. 840
  4. 792


Solution

The correct option is C 840

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

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