Answer:
What number has all letters in alphabetical order when spelled out?
What turns everything around but does not move?
What is as big as you are and yet does not weight anything?
Of these things - I have two. One for me - and one for you. And when you ask about the price, I simply smile and nod twice.
Iron on a mammal. Mammal on your feet.
I have two eyes in the front and a lot of eyes on my tail
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?