I understand that the Combination and Permutation-formula can be used interchangeably as they are essentially the same. However, I stumble repeatedly over one type of question where I am not sure which question I should be using.
Example 1:
If there are 2 empty chairs left in an auditorium but there are 8 people who need to be seated, in how many number of different ways can those 8 people be seated on 2 empty chairs?
Example 2:
How many different ways are there to choose 2 candidates from 8 possible candidates?
Both questions deal with 8 into 2. However, one is done via Permutation and one is Combination! WHY? How can i identify which one to use, without guessing?
Thanks a lot to all the geniuses out there that can answer this sufficiently.
Example 1:
If there are 2 empty chairs left in an auditorium but there are 8 people who need to be seated, in how many number of different ways can those 8 people be seated on 2 empty chairs?
Example 2:
How many different ways are there to choose 2 candidates from 8 possible candidates?
Both questions deal with 8 into 2. However, one is done via Permutation and one is Combination! WHY? How can i identify which one to use, without guessing?
Thanks a lot to all the geniuses out there that can answer this sufficiently.
