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?

Why is Saturday stronger than Monday?

There was a minor accident with a doctor's son but the doctor noticed no major injury. After the treatment, the father of that doctors son is sitting with the son of the doctor without the doctor being in the room.

How can this be possible?

You walk into a room and see a bed. On the bed, there are two dogs, five cats, a giraffe, six cows, and a goose. There are also three doves flying above the bed. How many legs are on the floor?

What kind of storm is always in a rush?

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

They came out at night, without being called.
They lost at day, without being stolen.
Who are they?

Take away my first letter, then take away my second letter. Then take away the rest of my letters, yet I remain the same. What am I?

What jumps when it walks and sits when it stands?

In an Art Gallary, When the clock hit 11 am, Artist hung the painting number 30. When it struck 4 pm, he hung painting number 240 and when it struck 7:30 pm, he hung painting number 315.

Can you determine, which painting number will he hang when the time is 9:20 pm?