If the numbers from $5$ to $85$ which are exactly divisible by $5$ are arranged in descending order,which number would be at the eleventh place from the bottom?

How many $8$'s are there in the following number series which are exactly divisible by their immediately preceding and also divisible by their immediately succeeding numbers?
$8, 2, 4, 5, 1, 7, 2, 8, 4, 8, 4, 2, 2, 8, 2, 6, 9, 8, 4, 5, 4, 8, 3, 2, 8, 4, 3, 1, 8, 3$

Rahul ranked ninth from the top and thirty-eighth from the bottom in a class. How many students are there in the class?

If the position of the first and the sixth digits of the sequence of numbers $8, 9, 0, 3, 2, 1, 4, 6, 7, 5$ are interchanged,the second and the seventh and so on,which number would be seventh from the right end?

Among $P, Q, T, A$ and $B$ each having a different height,$T$ is taller than $P$ and $B$ but shorter than $A$ and $Q.$ $P$ is not the shortest. Who among them is the tallest?

$A$ number is greater than $3$ but less than $8$. Also,it is greater than $6$ but less than $10$. The number is