Twenty frogs are sitting on a log floating on the surface of a river. Two of them decide to jump off into the water.

How many frogs are there on the log at this moment?

I am taken from a mine and shut up in a wooden case, from which I am never released, and yet I am used by almost every person. What am I?

Can you name three consecutive days without using the words Monday, Tuesday, Wednesday, Thursday, Friday, Saturday, or Sunday?

John was piloting a plane behind a car but was never able to overtake it. Why?

I’m light as a feather, yet the strongest person can’t hold me for five minutes. 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.

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

John enters a small room. The Door Closes.
When the door opens, John is in a larger room.

Explain?

They do not possess flesh or feathers or scales or bone
But still, they are blessed with fingers and thumbs of their own.

What jumps when it walks and sits when it stands?