I have a clock(12-hour format) and both the needles of the clock overlap at 12:00.
After how much time, they will overlap again?

In a competitive exam, each correct answer could win you 10 points and each wrong answer could lose you 5 points. You sat in the exam and answered all the 20 questions, which were given in the exam.
When you checked the result, you scored 125 marks on the test.

Can you calculate how many answers given by you were wrong?

It walks on 4 when its young, walks on 2 when it's older, and walks on 3 when its very old?

In which direction should the missing arrow point?

My friends called me Iron59 because my parents are a chemist and a mathematician. What is my real name?

what's the probability of getting a king or a queen from a pack of 52 cards?

If Japan and Panama decided to merge into a single country, probably people will name it Japanama.

Can you think of two more such country's unions that could produce similar names like Japanama by overlapping their three letters?

You have an empty wine bottle with a cork that has been secured at the top in a normal way. There is a metal ring inside the bottle that is suspended by a string.

How can you make the metal ring drop to the bottom if you are not allowed to touch anything - not the bottle, not the cork, not the thread and not the ring?

There was an aeroplane crash, every single person died, but two people survived. How is this possible?

Railroad Crossing, look out for the cars. Can you spell that, without any R's ?