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oh alright then. gotcha. thanks a tonne riviet.

oh. ok. i think i understand. but when you are calculating the total amount of possible combinations, you don't flip the necklace over and count those as well do you? because the way i see it, we shouldn't have to divide by two if you aren't counting those anyway. right? im really confused...

hey um, this is my first post. so um.. not quite sure if im doing this right. but anyway.. i need some help with my prelim permutations + combinations revision im doing right now. i've got a test coming up and i havent done permutations and combinations in class cos i was on a holiday...