i know the answers already, i need explanation on how to get the answer. Can someone give some tips on how to find them?

1. a) For the algorithms "computing the sum of n numbers", indicate (i) a natural size metric for its inputs. i) its basic operation, (iii) whether the basic operation count can be different for inputs of the same size 2. b) For the algorithms "finding the largest element in a list of n numbers", indicate (i)a natural size metric for its inputs, (ii) its basic operation, (iii) whether the basic operation count can be different for inputs of the same size