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

An octopus has 8 legs. A hippogriff has 6 legs and 2 pairs of wings. A sphinx has 6 legs and one pair of wings. Now we have all 3 kinds and a total of 18 insects in a cage. We have a total of 118 legs and 20 pairs of wings. How many insects do we have of each kind?

It can't be seen, can't be felt, can't be heard, and can't be smelt.
It lies behind stars and under hills, And empty holes it fills.
It comes first and follows after, Ends life, and kills laughter.
What is it?

A mother bought three dress for her triplets daughters(one for each) and put the dresses in the dark. One by one the girls come and pick a dress.
What is the probability that no girl will choose her own dress?

By removing one matchstick and adding one matchstick, can you convert the word "ZOO" to an animal name?

You see a boat filled with people, yet there isn’t a single person on board. How is that possible?

When Jack was six years old he hammered a nail into his favourite tree to mark his height. Ten years later at age sixteen, Jack returned to see how much higher the nail was. If the tree grew by five centimetres each year, how much higher would the nail be?

Find three whole, positive numbers that have the same answer when multiplied together as when added together.

What is the largest amount of money that you can possess in change and still if someone asks you for a dollar, you won't be able to give?

What's the only room from which no one can enter or leave