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

John went to meet his friend Jacob, but when he was about to reach the main gate, John notices that Jacob had a mighty dog who was fastened to the tree. The chain is long enough that it allows the dog to reach the main gate.

How can the John reach the main gate?

The below given figure comprises of a pattern through which you can determine the missing letter. Can you push your mind to find the pattern and add the missing letter?

How can you drop a raw egg from a height onto a concrete floor without cracking it?

If,

20 % 5 = 24

21 % 7 = 33

42 % 6 = 67

Then;

66 % 6 = ?

If,
9 * 8 * 7 = 65
8 * 7 * 6 = 50
7 * 6 * 5 = 37

Find
6 * 5 * 4 = ?

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

Yesterday I fell from 30 feet high ladder but I don't get hurt. Why?

Can you think of a smallest +ve number such that if we shuffle the digits of the number, the new number becomes double the original number?

As a whole I am both
safe and secure.

Behead me and I become
a place of meeting.

Behead me again and I am
the partner of ready.

Restore me, and I become
the domain of beasts.

What am I?