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

2, 3, 5, 9, 17, _ What is the next number in the sequence?

If "P" means "-", "Q" means "/", "R" means "+", and "S" means "*" then find the value of the following:

21 Q 7 R 9 S 10 P 13

I never stop running even when I standstill. If I am formed by joining two identical bodies together, can you guess who I am?

John said, "If yesterday was tomorrow, today would be Friday."

When did John make this statement?

A fresher was sitting in an interview. The interviewer said, "This is the last question of your interview. Tell me the accurate position of the centre of this table where your resume is kept."

How can he answer this question? What will you have answered to such a question?

John: "Hi Teacher, What is your favourite movie ?".
Chemistry Teacher: "Indium Cerium Platinum Iodine Oxygen Nitrogen".
Ten seconds later... John replied I got it.

Do you?

It belongs to you, but other people use it more than you do. What is it?

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

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

why?