Fun Riddles

Question: You have two books. One of them is upside-down and the other is rotated so the top of the book is facing you.

What is the sum of the first page in each book?

Question: A man is found murdered on the ground with 53 bicycles scattered around the room.

How did he die?

Question: I grow from trees and your home,
once I am grown I fall to my doom.

What am I?

Question: You can call me a home, but I have no doors.
Someone lives inside me, but leaves when there's no more.

What am I?

Question: I'm not a pool, a tree, a slave, a website, or a shirt.

What am I?