Ravi walked $2 \, km$ west of his house and then turned south,covering $4 \, km$. Finally,he moved $3 \, km$ towards east and then again $1 \, km$ west. How far is he from his initial position (in $, km$)?

$A$ man leaves for his office from his house. He walks towards East. After moving a distance of $20 \,m,$ he turns towards South and walks $10 \,m.$ Then he walks $35 \,m$ towards the West and further $5 \,m$ towards the North. He then turns towards East and walks $15 \,m.$ What is the straight distance in metres between his initial and final positions?

$A$ man leaves for his office from his house. He walks towards east. After moving a distance of $20 \, m$,he turns towards south and walks $10 \, m$. Then he walks $35 \, m$ towards west and further $5 \, m$ towards north. He then turns towards east and walks $15 \, m$. What is the straight distance in metres between his initial and final positions?

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 $5:00 \, P.M.$?

Sanjeev walks $10 \, m$ towards the South. Turning to the left,he walks $20 \, m$ and then moves to his right. After moving a distance of $20 \, m,$ he turns to the right and walks $20 \, m.$ Finally,he turns to the right and moves a distance of $10 \, m.$ How far and in which direction is he from the starting point?

Rohit walked $25 \, m$ towards South. Then he turned to his left and walked $20 \, m$. He then turned to his left and walked $25 \, m$. He again turned to his right and walked $15 \, m$. At what distance is he from the starting point and in which direction?