Question

At a competition with 5 runners, medals are awarded for first, second, and

Answer 1

Answer:

B: Permutation;  Number of ways are 60

Step-by-step explanation:

At a competition with 5 runners, medals are awarded for first, second, and third places.

Each of the 3 medals is different.

This is a case of Permutation and the Number of ways are 60.

We have to award 3 medals among 5 runners.

This can be done in 5P3 ways.

= $\frac{5!}{(5-3)!}$

= $\frac{5\times4\times3\times2\times1}{2\times1}$

= $5\times4\times3=60$

Therefore, the answer is option A.

Answer 2

Answer:

a

Step-by-step explanation:

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