We have shown you a regular water barrel as below. Without using any measuring device can you check if the barrel is more than half-filled or less than half-filled?

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

It's a test that will check your IQ.

Suppose you have one 11 minute hourglass and one 13 minute hourglass.

Can you measure exactly fifteen minutes using them ?

What can run but never walks, has a mouth but never talks, has a head but never weeps, has a bed but never sleeps?

What is the difference between a jeweller and a jailer?

Find out the number of circles in the given picture having Illusion

Why is the longest human nose just 11 inches?

What does this Rebus Picture means ?

Is the statement valid that it does not matter how much older a sibling is, eventually the younger one will be half as old as the older one?

There are people and strange monkeys on this island, and you can not tell who is who (Edit: until you understand what they said - see below). They speak either only the truth or only lies.
Who are the following two guys?
A: B is a lying monkey. I am human.
B: A is telling the truth.