In an $AP$,if $a = 3.5, d = 0, n = 101$,then $a_{n}$ will be

There are $\ldots \ldots \ldots \ldots$ multiples of $3$ lying between $1$ and $50$.

Find four numbers in $A.P.$ such that their sum is $36$ and the product of means ($2^{nd}$ and $3^{rd}$ term) exceeds the product of extremes ($1^{st}$ and $4^{th}$ term) by $32.$

If $2x$,$x+10$,and $3x+2$ are three consecutive terms of an $A.P.$,find the value of $x$.

How many terms of the $A.P.$ $8, 15, 22, \ldots$ add up to $1490$?

For a given $A.P.$,$a=2$ and $d=3$. Then,$S_{30} = \dots$