There are nine dots in the picture that has been attached with this question. Can you join all the dots by drawing four straight lines without picking up your pen?

I have lakes with no water, mountains with no stone and cities with no buildings. What am I?

A girl rode into a tourist spot out of the city on Thursday. She loved the place and decided to stay for a few days. She stayed for four days and then she left for back home on Thursday.

How can this be possible?

A train full of passengers goes through a tunnel. When the train comes out from the other end, there is no single person on the train.

How did it happen?

My cousin lives in one story house in Antarctica. His house is made the of-of sandstone. what is the color of stairs?

Alpha is Beta's sister.

Gamma is a Beta mother.

Delta is Gamma's father.

Tango is Delta's mother.

Then,

How is Alpha related to Delta?

If eleven plus two equals one, what does nine plus five equal?

It can't be seen, can't be felt, can't be heard, and can't be smelt.
It lies behind stars and under hills, And empty holes it fills.
It comes first and follows after, Ends life, and kills laughter.
What is it?

You can take four of the five letters out of this word, but the pronunciation never changes. What is the word?

There are five vowels (a, e, i, o, u) in the English language.
Can you tell us a word that contains all these vowels?