In a row of children facing north,Manish is fourth to the left of Suresh,who is tenth from the left end. Nisha is second to the right of Suresh and eighth from the right end of the row. Total how many children are there in the row?

Kishore walks $10 \,km$ towards north. Then he walks $6 \,km$ towards south. Then he walks $3 \,km$ towards east. How far and in which direction is he with reference to his starting point?

$A$ child is looking for his father. He went $90 \, m$ in the east before turning to his right. He went $20 \, m$ before turning to his right again to look for his father at his uncle's place $30 \, m$ from this point. His father was not there. From there,he went $100 \, m$ to his north before meeting his father in a street. How far did the son meet his father from the starting point? (in $m$)

$R$ is to the West of $P$. $T$ is to the East of $S$. $P$ is to the North of $S$. $T$ is in which direction with reference to $R$?

$A$ person travelled from a point $X$ straight to $Y$ at a distance of $80 \, m$. He turned right and walked $50 \, m$,then again turned right and walked $70 \, m$. Finally,he turned right and walked $50 \, m$. How far is he from the starting point? (in $m$)

If the digits of a watch are replaced by every alternate letter of the alphabet beginning from $12$ in the reverse order,i.e.,$12$ is replaced by $A$,$11$ is replaced by $C$,and so on,then on which alphabet would the small hand be when the time is $5:00 \, P.M.$?