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?

13 decks of cards have been mixed. What is the minimum number of cards that must be taken out from the above-mixed cards to guarantee at least one 'four of a kind?

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?

When I got four, I have it none.
When I got two, I have it some.
When I got none, I have it all.

What is it?

What demands an answer, but asks no questions

In my garden, I have many trees but only one of them is the mango tree. In these mango trees, there are some mangoes(as expected).

But after a strong wind, there are neither mangoes on the tree nor on the ground. Explain?

What do you see in the given picture?

Can you find out a way through which you can make five squares out of the given figure by moving just six match sticks?

What have one eye but still cannot see?

What has a ring but no finger?