In how many different ways can the letters of the word 'LEADING' be arranged so that the vowels always come together?

Difficulty: Medium

Correct Answer: 720

Explanation:

Problem restatementCount arrangements of 'LEADING' where the vowels form one adjacent block.

Given data

  • Word: L, E, A, D, I, N, G (7 distinct letters).
  • Vowels: E, A, I (3 vowels).
  • Consonants: L, D, N, G (4 consonants).

Concept/ApproachBlock the vowels as [V]; arrange [V] with the 4 consonants (5 items), then permute vowels inside [V].

Step-by-step calculation Arrange 5 items: 5! = 120 Permute vowels (E, A, I): 3! = 6 Total arrangements = 120 × 6 = 720

Verification/AlternativeAll letters are distinct; no division by factorials for repeats is needed.

Final Answer720

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