Question

There are 7 seniors on the high school soccer team. Two of them will be

Answer 1

The two co-captians can be chosen in 21 different ways.

How many ways are there to choose the co-captains?

If the two co-capitans are equivalent, then we need to find combinations.

So we want to find how many combinations of 2 elements we can make out of a set of 7 elements.

This is given by:

$C(7, 2) = \frac{7!}{(7 - 2)!*2!} = \frac{7*6}{2} = 21$

So the two co-captians can be chosen in 21 different ways.

If you want to learn more about combinations:

brainly.com/question/11732255

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