Count The number of F's in the paragraph below:

"FINISHED FILES ARE THE RESULT OF YEARS OF SCIENTIFIC STUDY COMBINED WITH THE EXPERIENCE OF YEARS"

I am dry when I go inside, but wet when I am pulled outside.
The longer I am inside, the stronger I get
When I am completely out, I am wet and I literally sag
Who am I?

I don't get anymore wetter, no matter how much rain falls on me.

If six children and two dogs were under an umbrella, how come none of them got wet?

Why 1729 is a magic number? Answer Logically.

You may enter, but you may not come in. I have space, but no room. I have keys, but open no lock. What am I?

You enter your friend's room. He is not in his room. Although you see that on the bed there are two dogs, five cats, two giraffes and three pigs. Also, a couple of chickens and ducks are flying in the room.

Calculate the number of legs standing on the floor.

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

I have a hole in my back and legs I lack.
I live where I can’t breathe and I eat without teeth.
What am I?

What you cannot hold but it is yours?