A man who was outside in the rain without an umbrella or hat didn’t get a single hair on his head wet. Why?

Astrology starts with the alphabet A, Biology starts with B, Psychology with P and Limnology with L.

Can you find an "ology" that begins with a P?

What can go through glass without breaking it?

Give it food and it will live; give it water and it will die.

The person who makes it has no need for it. He who purchases it does not use it. The person who does use it does not know they are. What is it?

A word I know,
Six letters contain,
Subtract just one,
And twelve is what remains.

If we add four times the age of John four years from now to five times his age five years from now we get ten times his current age.

How old will John be two years from now?

Can you complete the sequence?

192, 021, 222, 324, 252, 627, 2__, 9__?

There are forty elephants and they have forty-fore heads. How can this be possible?

You need to complete the maze by entering from the entrance marked below in the figure near the yellow circle, bottom left and leaving from the exit point near the green circle, bottom middle.

Rule of Game: You can move only by exchanging green and yellow circles.