Answer:
how many words are in those books
Thousands of these come together to make a digital image. What is it?
Large as a mountain, small as a pea, Endlessly swimming in a water-less sea.
Though easy to spot, when allowed to plume, It is hard to see, when held in a room.
Who is he that runs without a leg. And his house on his back?
What covers its face with its hands, speaks no language, yet most known what it's saying?
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?