NP Problem

1. Consider the problem given a set of positive integers S = {a, a2, exist a set Ac S such that , an), does there at- Let L denote the language aiEA Does L belong to NP if so prove it, otherwise explain why it is not 1. Consider the problem given a set of positive integers S = {a, a2, exist a set Ac S such that , an), does there at- Let L denote the language aiEA Does L belong to NP if so prove it, otherwise explain why it is not