Multiple choice

How many words can be made from the letters of the word "LUCKNOW" when all vowels always come together?

  1. 1256

  2. 1440

  3. 1820

  4. 1930

  5. None of these
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The word LUCKNOW has 7 letters with 2 vowels (U, O) and 5 consonants (L, C, K, N, W). Treat the 2 vowels as one unit. Arrangements of 6 units = 6! = 720. Vowels can be arranged within their unit in 2! = 2 ways. Total = 720 × 2 = 1440. Option B is correct.

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