Can you arrange four 9's and use at most 2 math symbols, to make the total 100?

I have cities, but no houses. I have mountains, but no trees. I have water, but no fish. What am I?

If I put in one canary per cage, I have one bird too many. If I put in two canaries per cage, I have one cage too many. How many cages and canaries do I have?

I have no life, but I can die. What am I?

You see a mathematical expression in the picture. Can you think of a movie that this expression refers to?

There is a place where if I stand up straight, I will still be considered sideways.

A man hijacks an aeroplane transporting both passengers(8 of them) and valuable cargo. After taking the cargo, the man demands nine parachutes, puts one of them on, and jumps, leaving the other eight behind. Why did he want eight?

My grandson is about as many days as my son in weeks, and my grandson is as many months as I am in years. My grandson, my son and I together are 120 years. Can you tell me my age in years ?

An apple seller is hosting a competition. He offers 1000 apples and 10 boxes to the people who pass by. The challenge is to put those 1000 apples in the 10 boxes in such a manner that if he asks for any amount of apples, the person can directly give him the boxes or a combination of boxes. If the person can do it, he promises to give a thousand apples for free.

If you happen to pass by the apple seller, will you be able to win a thousand apples?

What has six faces, but does not wear makeup, has twenty-one eyes, but cannot see? What is it?