Recent content by Lukedawgus

I never would have thought of that, as evidenced by the fact that I turned in my homework with 20% as my answer. Oh well, it's still good to know the right answer, so I can see where i messed up. Thanks a lot.

Yeah, I tried that, it seemed logical. I get 7 choose 5 = 21, and 7 choose 4 = 35. Since 10 choose 5 = 252, this gives about 20%. My book says 50%, so am I just working the numbers the wrong way here?

Ok, I am sort of stuck on this, and was hoping someone could nudge me in the right direction. The question is: An instuctor gives her class a set of 10 problems with the information that the final exam will consist of a random selection of 5 of them. If a student has figured out how to do...