A family of 11 (excluding the parents) attend a basketball game. Their seats are numbered 1,2,3,4,5,6,7,8,9,10,11. i) ii) iii) How many different arrangements in the 11 seats for the 11 people? How many arrangements so that the 3 children are together, 5 teen girls are together, and 3 teen boys are together? How many arrangements so that the children are in seats 3,7,9?

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