Lifeless eyes on my smiling face and watch your child's sleeping place. In their dreams they hold me tight. What am I?

Can you circle exactly four of these numbers such that the total is twelve?

1 6 1
6 1 6
1 6 1
6 1 6

Which is heavier: a ton of bricks or a ton of feathers?

You have a three-gallon and a five-gallon measuring device. You wish to measure out four gallons.

There are nine dots in the picture that has been attached with this question. Can you join all the dots by drawing four straight lines without picking up your pen?

I am the beginning of the end, and the end of time and space. I am essential to creation, and I surround every place. What am I?

You need to remove two matchsticks to make the below equation true. Can you do it ?

My friends called me Iron59 because my parents are a chemist and a mathematician. What is my real name?

There were two grandmothers and their two granddaughters.
There were two husbands and their two wives.
There were two fathers and their two daughters.
There were two mothers and their two sons.
There were two maidens and their two mothers.
There were two sisters and their two brothers.
Yet there are only six, who are buried here,
All are born legitimate and relationships clear.
How can this happen?

In the figure that has been attached to this question, each digit represents a digit. The similar letters carry the same integer value. Can you expose the original digits?