What has six faces, but does not wear makeup, has twenty-one eyes, but cannot see? What is it?

How many sides does a circle have?

Alex is stranded on an island covered in forest.
One day, when the wind is blowing from the west, lightning strikes the west end of the island and sets fire to the forest. The fire is very violent, burning everything in its path, and without intervention the fire will burn the whole island, killing the man in the process.

There are cliffs around the island, so he cannot jump off.

How can the Alex survive the fire? (There are no buckets or any other means to put out the fire)

Make eight squares by moving only two matchsticks.
Note- Square can be of different sizes.

A man looks at a painting in a museum and says, “Brothers and sisters I have none, but that man’s father is my father’s son.” Who is in the painting?

How is a fly different from a mosquito?

Solve the mathematical equation in the picture below.

If two's company, and three's a crowd, then whats four and five ?

Below the four parts have been reorganised. The four partitions are exactly the same in both arrangements. Why is there a hole?

I live in a bowl. I can swim. I have a tail. I also have fins and big eyes. What am I?