What has a ring but no finger?

I am a five-letter word under you,
Remove the first letter and I am above you,
Remove the second as well and I am around you.

Who am I?

How many words can a quill made with the feather of a pigeon write with a 100ml bottle of black ink?

If,
29 - 1 = 30
9 - 1 = 10
14 - 1 = 15

Based on similar logic, Can you prove that the below algebraic equation is true?
11 - 1 = 10 ?

Look at this sequence from top to bottom. What is the next number in the sequence?
1
11
21
1211
111221
312211

Solve the riddle below:

If a Chicken says, 'All chickens are liars" is the chicken telling the truth?

I have no life, but I can die. What am I?

You have a square. What you have to do is cut and reassemble the square such that you create a Red Cross sign that has the same volume as that of the square.

Do you know of a place where the wind blows south and then suddenly shifts direction towards the north?

Can you calculate the probability of getting a sum of six when a dice is thrown twice?