Count the squares in the matchstick puzzle below?

There is a square piece of paper with a hole that is denoted by the circle on the top right side in the given picture. You have to cut the paper in a manner that it forms two and only two separate pieces of paper and then rearrange the pieces in a manner that the holes come in the centre of the paper.

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

Find the combined weight of the Cat, Dog and Rabbit in the given picture.

I never was there, I am always to be.
You have never ever seen me, not ever you will.
Yet I am the confidence of everyone.

Who Am I?

Identify the 10 differences between the two given pictures.

A father's child, a mother's child, yet no one's son.

Who am I?

I sleep during the day and fly at night, but I have no feathers to aid my flight. What am I?

Find out the missing number in the picture attached:

Can you find the ages of a son, father and grandfather based on the following facts?
The sum of the ages of grandfather, father and son is 140 years.
The age of the son in months is the same as the grandfather in years.
The age of the son in days is the same as the father in weeks.