A man has a barrel filled with oil that weighs 100 pounds, and then he puts something into it. Now the barrel weighs less than 100 pounds. What did he put in the barrel?

John said, "If yesterday was tomorrow, today would be Friday."

When did John make this statement?

What runs around the whole yard without moving?

Pronounced as one letter,
And written with three,
Two letters there are,
And two only in me.
I am double, I am single,
I am black blue and grey,
I am read from both ends,
And the same either way.

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

A man is found dead with a knife in his back When the investigation is done. A chair lays beside him and the forensic team finds moisture around the body.

If he committed suicide, how did he do it?

Can you replace the question mark with the correct number in the below table sequence?

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?

Why do people go to bed?

What can you hold in your right hand, but never in your left hand?