You need to move three matchsticks to form three squares. Can you do it?

On a magical land of Mexico , all the animal in the land are rational.

There are 10 tigers and one goat.
Tiger can eat goat but since it's a magical land , the tiger who eats the goat , turns into goat and then can be eaten by the remaining tiger(s).

If we leave them for some time then how many goat and tiger will be there , when we come back ?

There are are five things wrong with this sentence; only geniuses will be able to to spot all of the mitstakes

I have a hole in my back and legs I lack.
I live where I can’t breathe and I eat without teeth.
What am I?

I have cities, but no houses. I have mountains, but no trees. I have water, but no fish. What am I?

In 1990, a person is 15 years old. In 1995, that same person is 10 years old. How can this be?

Find the number of squares in the below-given picture.

You find yourself in a strange place guarded by two guards.One of the guard always say truth while other always lies.You don't know the identity of the two.You can ask only one question to go out from there. What should you ask?

Find the missing number in the sequence below:

What came first, the chicken or the egg?