A woman lives in a Tall building thirty-six floors high and served by several elevators which stop at each floor going up and down. Each morning she leaves her apartment and goes to one of the elevators. Whichever one she takes is three times more likely to be going up than down. Why?

I have no doors but I have keys, I have no rooms but I have space, you can enter but you can’t leave! What am I?

In a science lab, a petri dish hosts a healthy colony of yeast for an experiment. Now every minute, all the yeast cells divide into two. At noon, there was just a single cell of yeast and at 1:22, the Petri dish was half full. Can you calculate when the dish will be full of yeast?

It has a long neck, A name of a bird, Feeds on cargo of ships, It's not alive,

What is it?

Your mother’s brother’s only brother-in-law is asleep on your couch. Who is asleep on your couch?

Find the next number in the series below.

6 18 270 72090 ?

A man was gazing through the window of the 23rd floor of the building. He suddenly opened the window and jumped on the other side of the window. On landing on the floor, there was not a sheer mark of injury on him.

How can that be possible if he did not use any kind of parachute and did not land on a soft surface?

How can you make a TV, a bed, a dog, and a car liquid?

Yesterday I fell from 30 feet high ladder but I don't get hurt. Why?

The ages of a father and son add up to 66.
The father's age is the son's age reversed.
How old could they be?
(3 possible solutions).