Find out the missing number in the picture attached:

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

There was a greenhouse.
Inside the greenhouse, there is a white house.
Inside the white house, there is a red house.
Inside the red house, there are lots of babies.

What is It?

Can you find the missing piece of the Porsche?

There's one "sport" in which neither the spectators nor the participants know the score or the leader until the contest ends.

What is it?

I am the one who remains awake when you sleep. But I need to rest when you awake. Who Am I?

What mathematical symbol can be put between 5 and 9, to get a number bigger than 5 and smaller than 9?

You have an empty wine bottle with a cork that has been secured at the top in a normal way. There is a metal ring inside the bottle that is suspended by a string.

How can you make the metal ring drop to the bottom if you are not allowed to touch anything - not the bottle, not the cork, not the thread and not the ring?

A wooden log balances equally on the scales when weighed with three-quarters of a pound and three-quarters of a wooden log.

Can you calculate the weight of the entire wooden log?

There are 2 cops parked along a one-way street looking for traffic violations. They spot a taxi driver going in the wrong direction, yet they do nothing.

Why?