The given is { 1, 2, 3, 4, 5 }.
To check for the validity of the given inequality, we have to substitute each members of the given set to confirm.
Thus, we have:
[tex]\begin{gathered} \text{when n=1} \\ n+2<6 \\ 1+2<6 \\ 3<6 \\ \text{This holds for n=1} \end{gathered}[/tex][tex]undefined[/tex]