A student is asked to answer 8 out of 11 questions on an exam. (a) Classify the problem as a permutation, a combination, or neither. Combination Neither Permutation (b) In how many ways can she select the questions to be answered?

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A student is asked to answer 8 out of 11 questions on an exam. (a) Classify the problem as a permutation, a combination, or neither. Combination Neither Permutation (b) In how many ways can she select the questions to be answered?

Mathematics
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there doesnt seem to be more than one group of options involved and it appears to be selection without repetition... I am guessing since its been awhile, but permutation. Would you happen to know the definitions of the words involved?
permutation is is when the order that is picked matters. Combination tends to refer to without order. So this I think is actually leaning towards combination
premutation is a selection of objects from a given set with regard to the order in which they are selected

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so the order to the questions selected is of no importance right?
i guess so
if you are given 10 answers to fill out and you can choose to do any 5 of them, does it matter what order you do it in?
Id go with combination after reading up on the definitions :)
we can write the rest of it in notation: 11! 9*10*11 ----- = -------- 8! 3! 1*2*3
ok, do you possibly know how to do the second half?
or 3*5*11 = 15*11 = 165
let me check that again :)
I wonder if id be different this way: 11! 4.5.6.7.8.9.10.11 ---- = ------------------ = same :) 3! 8! 1.2.3.4.5.6.7.8
If I did it right, and thats a big if these days, the answers 165 ways
ok, thank you for your help.

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