From the original position given in the above figure,$A$ and $B$ move one arm length clockwise and then cross over to the corner diagonally opposite. $C$ and $D$ move one arm length anticlockwise and cross over to the corner diagonally opposite. The original configuration $ADBC$ has now changed to:

$A, B, C$ and $D$ are playing cards. $A$ and $B$ are partners. $D$ faces towards North. If $A$ faces towards West,then who faces towards South?

$A$ postman was returning to the post office which was in front of him to the north. When the post office was $100 \, m$ away from him,he turned to the left and moved $50 \, m$ to deliver the last letter at Shantivilla. He then moved in the same direction for $40 \, m$,turned to his right and moved $100 \, m$. How many metres was he away from the post office? (in $m$)

Two buses start from the opposite points of a main road,$150 \, km$ apart. The first bus runs for $25 \, km$ and takes a right turn and then runs for $15 \, km$. It then turns left and runs for another $25 \, km$ and takes the direction back to reach the main road. In the meantime,due to a minor breakdown,the other bus has run only $35 \, km$ along the main road. What would be the distance between the two buses at this point? (in $km$)

$A$ is $40 \, m$ South-west of $B.$ $C$ is $40 \, m$ South-east of $B.$ Then,$C$ is in which direction of $A$?

Lokesh's school bus is facing North when it reaches his school. After starting from Lokesh's house,it turns right twice and then left before reaching the school. What direction was the bus facing when it left the bus stop in front of Lokesh's house?