The $n^{th}$ term of an $A.P.$ is given by $T_n = 5n - 2$. Then,the $12^{th}$ term of the $A.P.$ is:

Determine whether the following sequence is an $A.P.$ or not. (Assume that the pattern continues.) If it is an $A.P.$,find its $n^{th}$ term: $111, 107, 103, 99, \ldots$

Which term of the $A.P.$ $4, 9, 14, \ldots$ is $224$ (in $^{th}$)?

Can any term of the $A.P.$ $14, 18, 22, \ldots$ be $142$? If yes,which term?

The $20^{th}$ term of the $A.P.$ $1, 11, 21, \ldots$ is........

For the finite $A.P.$ $85, 80, 75, \ldots, -30,$ find the $5^{th}$ term from the end.