Which Burger Is Different in below image?

Count The number of F's in the paragraph below:

"FINISHED FILES ARE THE RESULT OF YEARS OF SCIENTIFIC STUDY COMBINED WITH THE EXPERIENCE OF YEARS"

The more you take me, the more you leave me behind.
Who Am I?

You Throw The Outside, Cook The Inside
Eat The Outside, Throw The Inside.

What Is It?

What has to be broken before you can use it?

I possess a head

I flaunt a tail

But I don't have mouth or legs

Can you find out who I am?

A man and a dog were going down the street. The man rode, yet walked. What was the dog’s name?

What has many keys but can’t open a single lock?

I hide my treasure in the ground, my tail is big and fluffy. If you spot me in a tree, please don’t call me scruffy. What am I?

Before Mount Everest was discovered, what was the highest mountain in the world?