2022 ASRJC P2 Q5
2022 ASRJC P2 Q5
5 marks
Prelims
Two families, each consisting of an adult couple and three children visited a carnival together. The \(10\) people went to queue for a ride randomly in one straight line.
- Find the probability that members of the \(2\) families stand in alternate positions in that queue.[2]
If the ride is made up of two identical circular carriages of five identical seats each.
- Find the number of ways the \(10\) people can be seated if not all the family members are seated together in the same carriage.[3]
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Answer:(i) \(\frac{1}{126}\) (ii) \(72\,000\)
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