Replace the question mark with the correct number.

If an electric train is travelling south, then which way is the smoke going?

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?

I have a five and a three-gallon jar. Assuming there is an infinite supply of water, how can I measure one-gallon water?

"That Restaurant always remains crowded. This is the reason why nobody goes there".

Can you find a flaw in this statement?

Find out which of the given views in the picture is accurately the top view of the given pyramid.

What does this rebus riddle mean?

While sitting in the Car, John suddenly finds that one of the wheels was missing. John noticed that a killer is approaching towards him. John cannot get out of the car.

How will John escape?

Buy me, smell me or deliver me, I do not change.

Who am I?

Can you place six matchsticks in a manner that each of the matchsticks is in touch with the other five matchsticks?