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

I am the beginning of everything, the end of everywhere. I'm the beginning of eternity, the end of time and space. What am I?

A shepherd had 18 sheep, out of which, all but ten died.

Can you tell us how many sheep was he left with?

We have four gears with below features=> Both Gear A and D has 60 teeth=> Gear B has 40 teeth=> Gear C has 20 teeth=> Every two minutes, Gear B makes 25 full turns.What is the relative speed of Gear A and Gear B?

How can you write nineteen in a manner that if we take out one, it becomes twenty?

An express train takes 3 seconds to enter the tunnel which is 1 km long.
If it is travelling at 120 km an hour, how long will it take to pass completely through the tunnel?

I know a country, If you remove the last alphabet of its name, it will become a part of your body. Do you name it?

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

Can you make four (4) nines (9) equal 100?

Three friends named Mr. Black, Mr. Yellow and Mr. Green enter a pub on a weekend night. They are wearing either a Black, Yellow or Green shirt.

Mr. Yellow says to them, 'Did you notice that we all are wearing different color shirts than our names?'

To this, the man who was wearing the Green shirt said. 'Wow, thats right.'

Can you identify who is wearing which colour shirt ?