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In which of the following situations should permutations be used because the order matters?

Answer and explanation

Correct answer: Awarding gold, silver and bronze medals among 8 finalists

Gold, silver and bronze are distinct positions, so changing the order of the same 3 finalists changes the outcome. Hence the count is \(^{8}P_{3}\). A committee or a group of representatives has no order. Exam tip: use permutations when ranks or positions are assigned.

Related tags

PermutationsOrder MattersRankingClass 11 MathematicsCounting PrinciplesPermutations And CombinationsMathematicsClass 11 Mcq

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