Permutations with Restrictions Q1

Permutations with Restrictions Q1

John and 5 other boys are to form a queue with 3 girls. Find the number of possible arrangements if

  1. John is the first in the queue,
  2. the first and the last are of the same sex.

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Answer:(i) \(40\,320\) (ii) \(181\,440\)

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