Mohan correctly remembers that his father's birthday is before $20^{th}$ January but after $16^{th}$ January,whereas his sister correctly remembers that their father's birthday is after $18^{th}$ January but before $23^{rd}$ January. On which date in January is their father's birthday?

Five boys are standing in a row facing East. Deepak is to the left of Sameer,Tushar and Shailendra. Sameer,Tushar and Shailendra are to the left of Sushil. Shailendra is between Sameer and Tushar. If Tushar is fourth from the left,how far is Sameer from the right?

Ram is facing South. Ramesh,walking towards him,stops,and turns to his right. He sees Umesh standing before him facing him. Which direction is Umesh facing?

Six flats on a floor in two rows facing North and South are allotted to $P, Q, R, S, T$ and $U$.
$(i)$ $Q$ gets a North facing flat and is not next to $S$.
(ii) $S$ and $U$ get diagonally opposite flats.
(iii) $R$,next to $U$,gets a South facing flat and $T$ gets a North facing flat.
Which of the following combinations get South facing flats?

$A$ man walks $30 \,m$ towards South. Then,turning to his right,he walks $30 \,m.$ Then,turning to his left,he walks $20 \,m.$ Again,he turns to his left and walks $30 \,m.$ How far is he from his initial position (in $m$)?

Raman starts from point $P$ and walks towards South and stops at point $Q.$ He now takes a right turn followed by a left turn and stops at point $R.$ He finally takes a left turn and stops at point $S.$ If he walks $5 \, km$ before taking each turn,towards which direction will Raman have to walk from point $S$ to reach point $Q$?