๐Ÿ“ข Too many exams? Donโ€™t know which one suits you best? Book Your Free Expert ๐Ÿ‘‰ call Now!

  • google app store apple app store
  • โœ–

      Question

      How many unique arrangements can be made using all the

      letters of the word "DELUSION", ensuring that the vowels do not appear together?
      A 32580 Correct Answer Incorrect Answer
      B 42420 Correct Answer Incorrect Answer
      C 37440 Correct Answer Incorrect Answer
      D 36240 Correct Answer Incorrect Answer
      E 38560 Correct Answer Incorrect Answer

      Solution

      If we take all the vowels to be a single letter, then

      Total number of letters = 5 [EUIO is taken as a single letter]

      Number of ways of arranging with all the vowels together = 5! ร— 4! = 120 ร— 24 = 2880

      Number of ways of arranging without any condition = 8! = 40320

      So, number of ways the word can be arranged so that all the vowels never occur together = 40320 โ€“ 2880 = 37440

      Practice Next
      ask-question