Can you convert the number zero(0) into a positive number using just one mathematical operator ?

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?

Assume the given figure to be a delicious doughnut. Yes, now you can concentrate more on the puzzle. So you have this delicious doughnut in your refrigerator when your friends come knocking at the door. There are eight of them. Now you have to make three cuts in this doughnut so that each one of you nine people can enjoy a piece of it. Neither you nor your friends would mind the size of their piece as long as they are getting it. How will you do it?

With the help clues provided in the image, can you find the 5 digit key?

For this puzzle, you might have to find logic in something illogical. But hey, it's fun and a healthy little break from your strenuous puzzle-solving sessions.

Can you decipher the meaning in the following cluster of letters?

ITIT,NCENTCENT

Next Number in the Series,

5, 16, 49, 104, ?

What jumps when it walks and sits when it stands?

A man embarked on a questionnaire game. He kept asking the same question to whomever he found. The answer each time was different.

Can you guess what the question was?

John leaves home and then he takes three right turns. John wants to return to home but he was scared of Jacob, who is wearing a mask.

What is John Situation ?

As easy as you can get into me, it is as hard to get out of me.

Do you know what I am?