This is a classy optical illusion puzzle. What more you can find except bricks in the image below?

I am not alive, but I grow; I don't have lungs, but I need air; I don't have a mouth, but water kills me. What am I?

Complete the table series riddle by finding the number that can replace "??".

Remove two matchsticks to make the below equation correct.

An apple seller is hosting a competition. He offers 1000 apples and 10 boxes to the people who pass by. The challenge is to put those 1000 apples in the 10 boxes in such a manner that if he asks for any amount of apples, the person can directly give him the boxes or a combination of boxes. If the person can do it, he promises to give a thousand apples for free.

If you happen to pass by the apple seller, will you be able to win a thousand apples?

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

It walks on 4 when its young, walks on 2 when it's older, and walks on 3 when its very old?

A man was gazing through the window of the 23rd floor of the building. He suddenly opened the window and jumped on the other side of the window. On landing on the floor, there was not a sheer mark of injury on him.

How can that be possible if he did not use any kind of parachute and did not land on a soft surface?

What is the fewest number of coins that would be required in order to make sure each and every coin touches exactly three other coins?

What's a single-digit number with no value?