I have an eye but still cannot see.

Who am I?

It comprises roots which nobody sees,
Much taller than those trees,
Up and up it goes,
Still it never grows?

What word begins and ends with an E, but has only one letter?

What has many keys but can’t open a single lock?

What can run but never walk, have a mouth that never speaks, have a head that never weeps, and have a bed but never sleeps?

The Puzzle: A girl, a boy, and a dog start walking down a road.

They start at the same time, from the same point, in the same direction.

The boy walks at 5 km/h, the girl at 6 km/h.

The dog runs from boy to girl and back again with a constant speed of 10 km/h. The dog does not slow down on the turn.
How far does the dog travel in 1 hour?

Samuel was out for a walk when it started to rain. He did not have an umbrella and he wasn't wearing a hat. His clothes were soaked, yet not a single hair on his head got wet. How could this happen?

John’s parents have three sons: Snap, Crackle, and what’s the name of the third son?

I am white when I am dirty, and black when I am clean. What am I?

How can you take 2 from 5 and leave 4?