What's the only room from which no one can enter or leave

What mathematical symbol can be put between 5 and 9, to get a number bigger than 5 and smaller than 9?

On a bus, there is a 26-year-old pregnant lady.
A 30-year-old policeman.
A 52-year-old random woman.
And the 65-year-old driver.

Who is the youngest?

Can you name some countries which do not have the alphabet 'A' in them?

I want to fill my bucket using both cold and hot water.
I have two taps for both cold and hot water. The hot water tap fills the bucket in exact 6 hours and the cold water tap fills the bucket in exact 4 hours.
I turn both of them simultaneously but I forgot to turn off another tap which removes the water out of the bucket. This tap can empty the bucket in 12 hours.

How Long will it take to fill the bucket?

After undergoing a successful eye operation, A blind girl has just boarded a train to her home. The doctor asked her to open the bandages after 3 hours. On her train journey, she opened the bandages and within a fraction of the time she commits suicide by jumping off the train.

Though her operation was successful, Why did she commit suicide?

In this image, you can see three almost identical Doraemon images. Can you spot the odd one out from them?

What is the coolest letter in the alphabet?

A plane crashed between the border of Mexico and America. Where do you bury the survivors?

Replace the letters of words with a number so that the below equation holds true

BASE +
BALL
---------
GAMES
----------