Is there something related to order? For one of them, order matters–but for the other, order does not matter.
What exactly is “order”? Can you give me some examples of when a question is worded as a combination and that same question tweaked so it’s a permutation question?
Oh, isn’t there a formula related to these? Do I have to memorize them? What’s the difference between the two formulas?
Will it be enough to memorize this formula? If there’s something else I need to know regarding combinations and permutations as they relate to GMAT math, what is it?
How would you answer this question?
Well, you got it! We have a GMATPill video explanation for that as well. Check it out!