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

My first is in chocolate but not in ham. My second is in cake and also in jam. My third at tea time is easily found. Altogether, this is a friend who is often around. What is it?

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?

I shave every day, but my beard stays the same. What am I?

I am green and found in the forest and have needles instead of leaves. What am I?
Hint 1: It can be used for Christmas decorations.
Hint 2: I have a strong, scent that is used in air fresheners.

Complete the series by replacing "?" with the correct number.

ST ND RD TH '?'

What Does this text mean:

important=important

Look at the below sequence of letters and tell us what the next letter should be:

O T T F F S S ?

Can you complete the sequence?

192, 021, 222, 324, 252, 627, 2__, 9__?

The centre of the third figure is empty. What digit should fit inside?