Multiple choice

A, B, C, D, E, I are sitting in a row. 1. D has only 1 adjacent person. 2. No two people with vowel names sit together. 3. I has only 1 adjacent person, and that is to his left. How many seating arrangements are possible?

  1. 4

  2. 1

  3. 2

  4. 6
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A Correct answer
Explanation

People: A, E, I (vowels); B, C, D (consonants). 6 positions. I is at the far left (pos 1). D is at the far right (pos 6). Remaining: A, E, B, C. Vowels cannot be adjacent. Possible arrangements for A, E, B, C in pos 2, 3, 4, 5: B, A, C, E; B, E, C, A; C, A, B, E; C, E, B, A. Total 4.

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