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For the Trevor and his 2 brothers and 5 friends question: The idea is Trevor cannot sit at the end seats ie seat no. 1 and 8. Imagine sitting at seat 1, you can only have people sitting to your right. (Assuming the seats are arranged like this: s1, s2, s3,
For the Trevor and his 2 brothers and 5 friends question: The idea is Trevor cannot sit at the end seats ie seat no. 1 and 8. Imagine sitting at seat 1, you can only have people sitting to your right. (Assuming the seats are arranged like this: s1, s2, s3,

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