Find the number of squares in the below picture

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?

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

If,
29 - 1 = 30
9 - 1 = 10
14 - 1 = 15

Based on similar logic, Can you prove that the below algebraic equation is true?
11 - 1 = 10 ?

I came first on earth but second on the heaven.
I also came twice in a week but found just once in a year.
I stay away from months but you can find me in February.

What am I?

I am a normal creature, but I have five hands. I can even have more but even then I will be considered normal.

Who am I?

I am sure no one can have two things for dinner. what are they?

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

John has eleven friends. He has a bowl containing eleven apples. Now He wants to divide the eleven apples among his friends, in such a way that an apple should remain in his bowl.
How can He do it?

This is a classy optical illusion puzzle. What more you can find except bricks in the image below?