Question

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?

Answer 1

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?

Answer 2

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

Answer 3

premutation is a selection of objects from a given set with regard to the order in which they are selected

Answer 4

so the order to the questions selected is of no importance right?

Answer 5

i guess so

Answer 6

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?

Answer 7

Id go with combination after reading up on the definitions :)

Answer 8

we can write the rest of it in notation:

11! 9*10*11
----- = --------
8! 3! 1*2*3

Answer 9

ok, do you possibly know how to do the second half?

Answer 10

or 3*5*11 = 15*11 = 165

Answer 11

let me check that again :)

Answer 12

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

Answer 13

If I did it right, and thats a big if these days, the answers 165 ways

Answer 14

ok, thank you for your help.