Find out a multi-digit number that if multiplied by the number 9 or any of its multiplications products (i.e. 18, 27, 36, 45,..) will result in the multiplication factor repeated (n) number of times.

A father's child, a mother's child, yet no one's son.

Who am I?

What comes
Once in a Year
Twice in a Month
4 times in a Week
6 times in a Day

There is a family that live in a round house. The two parents go out for a movie and leave a babysitter to watch their son. They come back and the kid was not there. Some one kidnapped him. The maid said she was cleaning in a corner. The cook said he was making pizza. The babysitter said she was getting a board game. Who kidnapped him.

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

Here is a mathematical expression that also secretly tells a movie name. What movie is that?

When you stop to look, you can always see me. But if you try to touch me, you can never feel me. Although you walk towards me, I remain the same distance from you. What am I?

I sleep during the day and fly at night, but I have no feathers to aid my flight. What am I?

What can run but never walks, has a mouth but never talks, has a head but never weeps, has a bed but never sleeps?

You need to arrange three 7 and mathematical symbols to form number 1?