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How many distinct words can be formed using all the letters of the word BAHUBALI such that every word begins and ends with a vowel?
- 2160
- 900
- 1560
- 780
Correct answer: 2160
Solution
BAHUBALI has 8 letters: vowels A(x2), U, I and consonants B(x2), H, L. Place vowels at first and last positions (chosen from A, A, U, I) then arrange the remaining 6 letters in the middle, accounting for repetitions.
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