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10 votes
10 votes
In a running competition, a bronze, silver and gold medal must be given to the top three girls and top three boys. If 8 boys and 6 girls are competing, how many different ways could the six medals possibly be given out?

User Ajin
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1 Answer

24 votes
24 votes

As given by the question

There are given that the total number of boys is 8 and total numbers of girls is 6.

Now,

Since there are two competitions, one for boys and one for girls and we want all the possible results we will calculate the possible combination for the boys and multiply them by the possible combination for the girls.

Then,

For the boys:


\begin{gathered} \text{Boys}=(8!)/((8-3!)) \\ \text{Boys}=(8!)/((8-3)!) \\ \text{Boys}=(8!)/((5)!) \\ \text{Boys}=(8*7*6*5!)/((5)!) \end{gathered}

Then,


\begin{gathered} \text{Boys}=(8*7*6*5!)/((5)!) \\ \text{Boys}=8*7*6 \\ \text{Boys}=336 \end{gathered}

Now,

For the girl:


\begin{gathered} Girl\text{s}=(6!)/((6-3)!) \\ Girls\text{s}=(6!)/((3)!) \\ Girls\text{s}=(6*5*4*3!)/((3)!) \end{gathered}

Then,


\begin{gathered} Girls\text{s}=(6*5*4*3!)/((3)!) \\ Girls=6*5*4 \\ Girls=120 \end{gathered}

Now,

A total number of possible results:


\begin{gathered} \text{result}=120*336 \\ \text{result}=40320 \end{gathered}

Hence, the ways are 40320.

User John Lewis
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3.1k points