Answer:
Made of ten but two we make, When assembled others quake, Five apart and we are weak, Five together havoc wreak. What are we?
Once you know it exists, it no longer exists. What is it?
What comes one time in today, three times in tomorrow and never in the future?
What can you never get rid of when you lose it?
What is so delicate that even mentioning it breaks it?
When is it bad luck to see a black cat?
Easy
Animal
Difficult
Food
Funny
Kids
Logic
What am I?