Riddle: If eleven plus two equals one, what does nine plus five equal?
Answer: 11 o'clock plus 2 hours = 1 o'clock 9 o'clock plus 5 hours = 2 o'clock
Riddle: How do you make the number 7 even without addition, subtraction, multiplication, or division?
Answer: Drop the "S" and "seven" becomes "even".
Riddle: Before Mount Everest was discovered, what was the highest mountain on Earth?
Answer: Mount Everest.
Best Riddles
Riddle: What's at least 6 inches long, goes in your mouth, and is more fun if it vibrates?
Answer: A toothbrush. Come on.
Riddle: The more you take away, the more I become. What am I?
Answer: A hole.
Best Riddles
Riddle: I have two hands, but I can not scratch myself. What am I?
Answer: A clock.
Riddle: There are 10 people in an empty, square room. Each person has full sight of the entire room and everyone in it without turning his head or body or moving in any way (other than the eyes). Where can you place an apple so that all but one person can see it?
Answer: Place the apple on one person's head.
Best Riddles
Riddle: How do you spell candy in 2 letters?
Answer: C and y c(and)y.
Riddle: Always in you, Sometimes on you; If I surround you, I can kill you. What am I?
Answer: Water.
Riddle: A pet shop owner had a parrot with a sign on its cage that said "Parrot repeats everything it hears". Davey bought the parrot and for two weeks he spoke to it and it didn't say a word. He returned the parrot but the shopkeeper said he never lied about the parrot. How can this be?
Answer: The parrot was deaf.
Riddle: Why did Tigger go to the bathroom?
Answer: He wanted to find his friend, Pooh!
Riddle: I can be cracked, I can be made. I can be told, I can be played. What am I?
Answer: A Joke!
Riddle: I am the beginning of the end, and the end of time and space. I am essential to creation, and I surround every place. What am I?
Answer: The letter E. End, timE, spacE, Every placE
Riddle: Poor people have it. Rich people need it. If you eat it you die. What is it? 
Answer: Nothing.
Riddle: How can you write down eight eights so that they add up to one thousand?
Answer: 888 + 88 + 8 + 8 + 8 = 1000.
Riddle: What do you call two witches who live together?
Answer: Broommates!
Riddle: What did the baseball glove say to the ball?
Answer: Catch you later.
Riddle: What 4-letter word can be written forward, backward or upside down, and can still be read from left to right?
Answer: NOON.
Riddle: How can you take 2 from 5 and leave 4?
Answer: F  I V  E Remove the 2 letters F and E from five and you have IV which is the Roman numeral for four.
Riddle: There are 30 cows in a field, and 28 chickens. How many didn't?
Answer: 10. Listen closely: 30 cows and twenty-eight chickens. Say EIGHT and ATE. They sound the same. Therefore, it means 20 ATE chickens. 30-20=10, so 10 cows didn't eat any chickens.