# LOGIC RIDDLES

### Fun Facts (Hints)

Here are a few facts about logical thinking. They may be able to help you in solving a few of these riddles:
• Logic has a few definitions, but is most known as the study of reasoning.
• Logic is used everyday in areas like mathematics, computers, and philosophy.
• The word logic is derived from the Greek word "logos."
• The creation of the study of logic is often attributed to Aristotle.
• Aristotle's study of logic has had a tremendous impact on the history of the world.
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## Fruit Friends Riddle

Hint:
She will always need to give you 5 apples. You both need at least 5 apples to begin with, but apart from that it doesnt matter exactly how many you each have. When she gives you 5 you will have 10 more than her because she will lose 5 and you will gain 5, resulting in a net difference of 10.

For example, if you each have 25 apples and she gives you 5 of hers, she will be left with 20 and you will now have 30, precisely 10 more than she has.
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Solved: 62%

## Throwing A Ball Riddle

Hint:
What is the easiest way to throw a ball, and have it stop, and completely reverse direction after traveling a short distance?
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Solved: 44%

Hint:
They Both Took Of At The Same Time On Different Days
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Solved: 45%

## Opening Doors Riddle

Hint:
His car door
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Solved: 64%

## Switch Or Stick Riddle

Hint:
The answer may surprise you: switch. Due to something called the Monty Hall Paradox, you will statistically have a better chance of making the "correct" choice. The concept is as follows:

Door 1 Door 2 Door 3

All have an equal chance to be correct:

Door 1: 1/3 Door 2: 1/3 Door 3: 1/3

After choosing Door 1, the remaining two have a 2/3 chance of containing the right choice:

Door1: 1/3 Doors 2 3: 2/3

If Door 3 is removed, the probability does not shift to 50:50. Instead, it is:

Door 1: 1/3 Door 2: 2/3

Thus, you should switch.
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Solved: 58%

## Condemned To Death Riddle

Hint: When's the last time you ate?
The 3rd one because the lions should have died after not eating for 3 years.
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## Doorway To Heaven

Hint:
If I asked the other guardian which door leads to heaven, what would he tell me?
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Solved: 55%

## Prohibited Chess Riddle

Hint:
Chess.
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Solved: 58%

## Accepting The Bet Riddle

Hint:
Yes, you should accept the bet. Simply because the odds of picking two relatively prime numbers are 60%. It is a win-win situation for you if you keep playing.
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Solved: 50%

## Grapeland To Applecity

Hint:
Step one: First you want to make 3 trips of 1,000 grapes 333 kilometers. You will be left with 2,001 grapes and 667 kilometers to go.
Step two: Next you want to take 2 trips of 1,000 grapes 500 kilometers. You will be left with 1,000 grapes and 167 kilometers to go (you have to leave a grape behind).
Step three: Finally, you travel the last 167 kilometers with one load of 1,000 grapes and are left with 833 grapes in appleland.
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Solved: 52%

## Boxes Of Balls Riddle

Hint:
Just One!

Because we know all labels are wrong.
So the BW box must be either BB or WW. Selecting one ball from BW will let you know which.
And the other two boxes can then be worked out logically.
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Solved: 49%

## Soldiers On The River

Hint:
First the boys cross the river. One stays ashore while the other brings the boat to the soldiers. A soldier takes the boat back across and the boy that stayed before brings the boat back and picks up the other boy. The boat takes the two boys back and one remains while the other boy returns the boat to the soldiers. This is repeated until all of the soldiers are on the opposite side of the river.
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Solved: 65%

## Stolen Apple Riddle

Hint:
Billy did it. Paige is telling the truth so she didnt do it. Tyler is lying so he reinforces that Paige didnt do it. Billy is lying so he did it.
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Solved: 53%

## 4 Men Camping Riddle

Hint:
It didn't even rain.
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Solved: 89%

## How Many Birth Days Riddle

Hint:
One, he may have many Birthdays, but only one birth day.
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Solved: 77%

## Post Your Logic Riddles Puns Below

Can you come up with a cool, funny or clever Logic Riddles of your own? Post it below (without the answer) to see if you can stump our users.

1. Why did the logician break up with his girlfriend? Because they had too many fallacies in their relationship.

2. How do you catch a squirrel using formal logic? Set up a syllogism with a nut as the conclusion.

3. Why did the philosopher refuse to go to the grocery store? Because he didn't believe in a posteriori knowledge.

4. Why did the mathematician go on a diet? To solve the weight problem.

5. Why did the chicken cross the road using propositional logic? To get to the other side of the truth table.

6. What do you call a logician who takes a long time to reach a conclusion? A syllogism.

7. How many logicians does it take to change a light bulb? None, they prefer to sit in the dark and contemplate the nature of light.

8. Why couldn't the logician sleep? He kept trying to form an adequate negation of "I am sleepy".

9. Why did the logician wear a two-colored hat? To ensure that the Law of Excluded Middle didn't apply.

10. What do you call a fallacious argument from a cow? A mooot point.

11. Why did the logician refuse to play cards with his friends? Because he doesn't believe in chance.

12. What do you call a logical argument from a whale? A cetacean of reason.

13. Why did the chicken refuse to enter the barn? Because the premise of the door's existence was never established.

14. How many philosophers does it take to change a light bulb? None, they would rather question the existence of light.

15. Why did the logical argument cross the road? To prove it was valid.

16. What do you call perfect deductive reasoning? A genius's argument.

17. Why was the logician's car a convertible? So they could put the top down for implication.

18. How many logicians does it take to screw in a light bulb? They would argue about the definition of "screw".

19. Why did the mathematician take a job as a lion tamer? To solve the problem of fear.

20. What do you call a logical argument from a computer? An algorithm of reasoning.

21. Why did the chicken cross the Mobius strip? To get to the same side.

22. How many philosophers does it take to agree on anything? The world may never know.

23. Why did the logician refuse to go to the beach? There were too many ways to take "wave" out of context.

24. What's the difference between an illogical chicken and a logical chicken? The latter crosses the road with a premise and a conclusion.

25. Why did the philosopher quit smoking? Because he realized that causation does not equal correlation.

26. What do you call a logical argument from a bird? A fowl syllogism.

27. Why did the logician refuse to watch movies? They already knew how it was going to end.

28. Why did the mathematician start a garden? To find a square root.

29. What do you call an argument that can talk but not walk? An invalid conclusion.

30. Why did the logician refuse to enter the world of online dating? Because it contradicts the Law of Identity.

31. What do you call a logical argument from a bee? A logical buzz.

32. How does a logician propose to their significant other? With a valid argument and a promise to never commit a fallacy.

33. Why did the philosopher join a gym? To prove that mind and body are not separate entities.

34. What do you call a logical argument from a snake? A reasoned hiss.

35. Why did the chicken refuse to participate in the Monty Hall problem? They had already established their pick as a matter of existential identity.

36. How do you get a logician to take a break? Present them with an unsolvable paradox.

37. Why did the logician refuse to eat the apple? They were suspicious of the causality behind it.

38. What do you call a logical argument from a hippo? A logical exercise.

39. Why did the philosopher refuse to attend the party? They didn't want to commit to the fallacy of generalization.

40. What do you call a logical argument from a donkey? A logical hee-haw.

41. Why did the logician refuse to go on vacation? The premise and conclusion of relaxation were never clearly defined.

42. What do you call a logical argument from a cricket? A logical chirp.

43. Why did the mathematician invest in the stock market? To solve the problem of exponential growth.

44. How can you tell if a logical argument is lost? It starts to formulate a premise and conclusion in circles.

45. Why did the logician refuse to go to the amusement park? They were integral to an ongoing proof.

46. What do you call a logical argument from a fish? A logical swim.

47. Why did the philosopher refuse to eat meat? They were argumentatively against the premise of animal exploitation.

48. What do you call a logical argument from a squirrel? A logical nut.

49. Why did the logician refuse to get a pet? Too many variables in the equation.

50. What do you call a logical argument from an alligator? A logical snap.