What word begins and ends with an E, but has only one letter?

John’s parents have three sons: Snap, Crackle, and what’s the name of the third son?

If a wheel has 54 spokes, how many spaces are there between the spokes?

How many times can you subtract the number two from the number fifty?

I live in a bowl. I can swim. I have a tail. I also have fins and big eyes. What am I?

I am a type of vehicle that has two wheels and is powered by humans. What am I?
Hint 1: You can ride me for exercise.
Hint 2: I am environment-friendly.

If you say my name, I will no longer exist. What am I?

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?

If I remove one from eleven it becomes Ten and if I remove one from nine also becomes Ten. How?

What have one eye but still cannot see?