how many different combinations of six people can sit in four chairs? assume one person sits in each chair

We want to choose 4 people and we have 6 people to choose from. This is a combination of 6, 4 by 4. Also called six choose four.

The following formula:

Is the combination of objects choosen from a total of . It's choose .

For our problem, we just need to compute the following:

Thus

Therefore the answer is 15 different combinations

72 is the answer to this problem

whole numbers.

step-by-step explanation:

we are given the average monthly rainfall (in millimeters) model r(m) for the years 1900-2009 as a function of the month number m.

as we can see m is taken for the number of months for years 1900-2009.

we know that number of months can't be a negative number or decimal number or a fraction.

so, the number of months could be only positive whole numbers.

therefore, whole numbers is more appropriate for the domain of r.