What is 3/7 chicken, 2/3 cat and 2/4 goat?

Thirty friends were on a hiking trip when they decided to enjoy the bonfire. They assembled for it and agreed to play a game. For that, they divided themselves into five teams with seven members each, forming five rows.

How did they manage to achieve this formation?

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

I am five letter word that is under you.
If you remove my 1st letter, then I am over you.
If you remove my 1st and 2nd letters then I am all around you.

Who am I?

I am white when I am dirty, and black when I am clean. What am I?

Spot 5 differences in two Christmas tree below:

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?

Can you solve the below geography rebus by decoding the below rebus ?

What kind of storm is always in a rush?

What numbers should go on the bottom line?
3 6 9 15
8 2 10 12
11 8 19 27
19 10 29 39
? ? ? ?