Can it be possible to build a house that has all its four walls facing towards the South?

What does this mean?

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The below given figure comprises of a pattern through which you can determine the missing letter. Can you push your mind to find the pattern and add the missing letter?

If two's company, and three's a crowd, then whats four and five ?

What time is it when an elephant sits on a fence?

I possess a head

I flaunt a tail

But I don't have mouth or legs

Can you find out who I am?

In the Chess Board picture below white army is arranged. You need to add a black army on the board such that no piece is under any threat.
Note: Army comprised of 1 king, 1 queen, 2 rooks, 2 bishops, 2 knights, and 8 pawns.

The horse jumps over the king.
Strangely there is absolutely no scratch on him.

Can anyone explain, how is this possible?

What four weights can be used to balance from 1 to 30 pounds?

Only one color, but not one size,
Stuck at the bottom, yet easily flies.
Present in sun, but not in rain,
Doing no harm, and feeling no pain.
What is it?