__________ comparisons required to sort the list 1, 2, 3…….n using insertion sort.(a) (n^2 + n + 2) / 2(b) (n^3 + n – 2) / 2(c) (n^2 + n – 2) / 2(d) (n^2 – n – 2) / 2This question was posed to me in an internship interview.The doubt is from Algorithms topic in portion Algorithms of Discrete Mathematics

__________ comparisons required to sort the list 1, 2, 3…….n using

1.	__________ comparisons required to sort the list 1, 2, 3…….n using insertion sort.(a) (n^2 + n + 2) / 2(b) (n^3 + n – 2) / 2(c) (n^2 + n – 2) / 2(d) (n^2 – n – 2) / 2This question was posed to me in an internship interview.The doubt is from Algorithms topic in portion Algorithms of Discrete Mathematics
Answer» Right option is (c) (n^2 + n – 2) / 2 To explain I WOULD SAY: 2+3+4+….6n = (n^2 + n – 2) / 2.

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