A maths symbol is hidden in the below Bar Graph. Can you decipher it?

Can you find the odd number in the following?

2716, 4135, 5321 and 7145

How can you tell a raw egg from a hard-boiled egg?

I am taken from a mine and shut up in a wooden case, from which I am never released, and yet I am used by almost every person. What am I?

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?

What are the next two letters in the following series and why?
W A T N T L I T F S _ _

*Hint: Check Puzzle Title

Can you identify the famous TV character from the rebus below?

10 people came into a hotel with 9 rooms and each guest wanted his own room. The bellboy solved this problem.
He asked the tenth guest to wait for a little with the first guest in room number 1. So in the first room, there were two people. The bellboy took the third guest to room number 2, the fourth to number 3, ..., and the ninth guest to room number 8. Then he returned to room number 1 and took the tenth guest to room number 9, still vacant.
How can everybody have his own room?

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?

I was speeding and ran through a stop sign, yet two traffic officers who were there do nothing about it.

why?