What has one letter and starts with an E?

One day, John and his friends were playing around. Jacob hit something with a Pin and it popped. John's dad came into the room that very moment, but he wasn't mad. In fact, he was smiling. What did Jacob hit?

The more of this there is, the less you see. What is it?

How can you take 2 from 5 and leave 4?

I have no life, but I can die. What am I?

Which Burger Is Different in below image?

Seven Robbers robbed a bank and hide the coins in a lonely place.
They decide to divide the money equally the next morning. Two greedy robbers decided to cheat the others and reach the place at night. They equally divided the coins between them, one coin left. So they called another robber and then they decided to divide equally among the three. Sadly again one coin left. The same thing happened to the 4th 5th and the 6th robber.
However, when the 7th robber reached in the morning, they can divide the coins equally.

How many coins were there in total?

What has to be broken before you can use it?

During which month do people sleep the least?

It comprises roots which nobody sees,
Much taller than those trees,
Up and up it goes,
Still it never grows?