Christina has four daughters, and each of her daughters has a brother. How many children does Christina have?

My location can be determined by the below rebus.
So where am i ?

The first two letters signify a male, the first three letters signify a female, the first four letters signify a great, while the entire world signifies a great woman. What is the word?

What demands an answer, but asks no questions

A beggar on the street can make one cigarette out of every 6 cigarette butts he finds. After one whole day of searching and checking public ashtrays the beggar finds a total of 72 cigarette butts. How many cigarettes can he make and smoke from the butts he found?

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?

In the figure, you can see nine stars. What you have to do is connect all of them by using just four line and without lifting your hand i.e. in a continuous flow.

Which point will the car reach to go out?

When I got four, I have it none.
When I got two, I have it some.
When I got none, I have it all.

What is it?

What word is represented by this rebus?