Is the statement valid that it does not matter how much older a sibling is, eventually the younger one will be half as old as the older one?

Solve the following series:
AZ, GT, MN, __, YB

There is a square piece of paper with a hole that is denoted by the circle on the top right side in the given picture. You have to cut the paper in a manner that it forms two and only two separate pieces of paper and then rearrange the pieces in a manner that the holes come in the centre of the paper.

Make eight squares by moving only two matchsticks.
Note- Square can be of different sizes.

I never was there, I am always to be.
You have never ever seen me, not ever you will.
Yet I am the confidence of everyone.

Who Am I?

As a whole I am both
safe and secure.

Behead me and I become
a place of meeting.

Behead me again and I am
the partner of ready.

Restore me, and I become
the domain of beasts.

What am I?

Which is the rope you never skip with?

The more it dries, the wetter it becomes. Can you tell what it is?

In a jungle where there are no street lights or any other artificial source of lights, I notice a black snake crossing the road.
How did I get sight of the snake?

Can you identify the direction in which this bus is moving; left or right?

Hint: The bus is moving on the roads of London.