Sanal's position in a row is $12^{th}$ from the front side and $47^{th}$ from the back side. How many persons are standing in that row?

Akshay is $16^{th}$ from the left end in a row of boys and Vijay is $18^{th}$ from the right end. Avinash is $11^{th}$ from Akshay towards the right end and $3^{rd}$ from Vijay towards the right end. How many boys are there in the row?

Sachin is sitting to the immediate left of Meena but not next to Bharti. Parveen is sitting to the right of Bharti. If the four friends are sitting in a circle,who is sitting to the immediate right of Meena?

Among six members $P, Q, R, G, S$ and $M$ sitting around a circle facing the centre,$(i)$ $R$ is between $G$ and $P$,$(ii)$ $M$ is between $P$ and $S$. What is the position of $Q$?

If $18^{th}$ February,$1997$ falls on Tuesday,then what will be the day on $18^{th}$ February,$1999$?

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?