4. Combinatorics (5/15) - 33%
This was a real bloodbath.
I'm having trouble figuring out when the internal order of a chosen group matters and when it does not.
I think it goes like that - let's say there's eight people but only four seats in a car so when you are asked to find the number of possible combinations of people who get in the car the internal order does not matter - just who's in and who's not. However if you are asked the find the number of possible seating arrangements of the people who get in the car then the internal order matters. That's how I understand it. Still, I'm having trouble applying this to the exercises.
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