What is in seasons, seconds, centuries and minutes but not in decades, years or days?

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

Solve this tricky question. You are trapped in a forest. With you, you have a gun preloaded with two bullets in it. In front of you, there is a tiger, a leopard and a jaguar.

How do you survive?

Find a 9-digit number, which you will gradually round off starting with units, then tenth, hundred etc., until you get to the last numeral, which you do not round off. The rounding alternates (up, down, up ...). After rounding off 8 times, the final number is 500000000. The original number is commensurable by 6 and 7, all the numbers from 1 to 9 are used, and after rounding four times the sum of the not-rounded numerals equals 24.

Buy me, smell me or deliver me, I do not change.

Who am I?

When monkey rotate the gear, which mark will be hit 1 or 2 ?

If six children and two dogs were under an umbrella, how come none of them got wet?

There was a blind man. He had four socks in his drawer either black or white. He opened it and took out two socks. Now the probability that it was a pair of white socks is 1/2.

Can you find out the probability that he had taken out a pair of black socks ?

If you had a pizza with crust thickness 'a' and radius 'z', what's the volume of the pizza?

The more you take me, the more you leave me behind.
Who Am I?