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In a race with six runners, gold, silver and bronze medals are awarded in order. If no positions are tied, in how many ways can the medals be awarded?

Answer and explanation

Correct answer: 120

There are 6 choices for gold, then 5 for silver and 4 for bronze. Thus, the total is \(6\times5\times4=120\). \(\binom{6}{3}=20\) is incorrect because medal order matters. Exam tip: use permutations when positions or ranks are distinct.

Related tags

PermutationsArrangementsOrdered SelectionMedal RankingClass 11 MathematicsPermutations And CombinationsMathematicsClass 11 Mcq

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