Exam-Style Problem
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June 2022 p53 q7
2810
A group of 15 friends visit an adventure park. The group consists of four families.
- Mr and Mrs Kenny and their four children
- Mr and Mrs Lizo and their three children
- Mrs Martin and her child
- Mr and Mrs Nantes
The group enter the park by walking through a gate one at a time.
In how many different orders can the 15 friends go through the gate if Mr Lizo goes first and each family stays together?
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