Someone asked me if I knew how many milk shake flavor combinations there are if you can get 5 flavors out of 42...

Someone asked me if I knew how many milk shake flavor combinations there are if you can get 5 flavors out of 42. I don't know anything about math but I guessed it was a combination problem and did 42 choose 5.

He then told me some other guy said it would be 42x41x40x39x38. I don't really give a shit who's right I just need to know, am I the autistic one?

>I guessed it was a combination problem and did 42 choose 5
>He then told me some other guy said it would be 42x41x40x39x38
>I don't really give a shit who's right
WEW LAD
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A
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42 choose 5 = 42*41*40*39*38.

42 choose 5 = (42*41*40*39*38)\5!

Oh fuck, I'm retarded

Is number choose number some dumb ass brit terminology? Never heard that in my life

That's because you're in high school. Fuck off.

Question is phrased badly. Can you pick the same flavor multiple times? Is the combination AAABB the same as BBAAA?

user he wanted your "milkshake"...

To add on to this, even without replacement you have the question of is ABCDE the same as BACDE or any other permutation?