What if you had the chance to ask three questions to an alien? The logic behind this kind of riddle forces you to think critically, taking into account the unknown answers and the strategic way you would approach this limited opportunity. This riddle explores the complexities of asking the right questions in a high-stakes scenario.
In this post, we’ll dive into a challenging logic riddle that involves asking three questions to aliens. Alongside it, we’ll explore 33 other fun and tricky riddles that will push your brain to its limits. Ready to test your wits?

All Riddle
1. Riddle:
A hard logic riddle about asking three questions to aliens: You are trapped on an alien planet, and the aliens are either always truthful or always lie. You don’t know which alien is which, but you can ask only three questions to the aliens. What three questions should you ask to figure out who is the liar and who is the truth-teller?
Answer and Explanation:
- Answer:
- “If I asked you whether you are a truth-teller, would you say yes?”
- “If I asked the other alien if you are a truth-teller, what would they say?”
- “If I asked you whether the other alien is a liar, would you say yes?”
- Explanation:
- First question: The idea behind the first question is that regardless of whether the alien is a truth-teller or a liar, their answer to the question will reveal whether they are the truth-teller. If you ask them if they are a truth-teller, they will say yes (if they are truthful) or no (if they are lying).
- Second question: The second question ensures you’re getting the answer from the right perspective. A truth-teller will truthfully tell you the liar’s identity, while the liar will lie about what the truth-teller would say.
- Third question: The final question helps you cross-check your findings. If both aliens give you consistent answers to questions about each other, you can determine who is the truth-teller and who is the liar. By asking these strategic questions, you can uncover the identities of both aliens.
2. Riddle:
What has keys but can’t open locks?
Answer and Explanation
- Answer: A piano.
- Explanation: A piano has many “keys,” but none of them are used for opening locks, making it a clever wordplay riddle.
3. Riddle:
What can be cracked, made, told, and played?
Answer and Explanation
- Answer: A joke.
- Explanation: A joke can be cracked, made up, told to others, or played on someone, making it a versatile riddle.
4. Riddle:
What is always in front of you but can’t be seen?
Answer and Explanation
- Answer: The future.
- Explanation: The future is always ahead of us, but it remains invisible until it arrives.
5. Riddle:
I have many keys but can’t open a lock. What am I?
Answer and Explanation
- Answer: A piano.
- Explanation: A piano has many “keys,” but they are used for making music, not for opening locks.
6. Riddle:
I have a head, a tail, but no body. What am I?
Answer and Explanation
- Answer: A coin.
- Explanation: A coin has a “head” side and a “tail” side, but no body, making it a classic riddle.
7. Riddle:
The more you take, the more you leave behind. What am I?
Answer and Explanation
- Answer: Footsteps.
- Explanation: Footsteps are left behind as you walk, and the more steps you take, the more you leave behind.
8. Riddle:
I speak without a mouth and hear without ears. I have no body, but I come alive with the wind. What am I?
Answer and Explanation
- Answer: An echo.
- Explanation: An echo speaks without a mouth and hears without ears, and it comes alive when sound waves travel through air.
9. Riddle:
What can travel around the world while staying in the corner?
Answer and Explanation
- Answer: A stamp.
- Explanation: A stamp is placed in the corner of an envelope, which can then travel all over the world, making it a clever riddle.
10. Riddle:
I have a neck but no head. What am I?
Answer and Explanation
- Answer: A bottle.
- Explanation: A bottle has a neck, but it doesn’t have a head, making it a simple yet effective riddle.
11. Riddle:
What gets wetter as it dries?
Answer and Explanation
- Answer: A towel.
- Explanation: A towel gets wetter as it dries something else, such as your body.
12. Riddle:
What is black when you buy it, red when you use it, and gray when you throw it away?
Answer and Explanation
- Answer: Charcoal.
- Explanation: Charcoal is black when purchased, turns red when burning, and becomes gray when it is used up.
13. Riddle:
What is always coming but never arrives?
Answer and Explanation
- Answer: Tomorrow.
- Explanation: Tomorrow is always coming, but it never actually arrives, making it an interesting riddle.
14. Riddle:
What has one eye but cannot see?
Answer and Explanation
- Answer: A needle.
- Explanation: A needle has an “eye” (the hole through which the thread passes), but it cannot see, which makes this a fun riddle.
15. Riddle:
What has teeth but doesn’t bite?
Answer and Explanation
- Answer: A comb.
- Explanation: A comb has teeth, but they are not for biting, providing an interesting twist on the riddle.
16. Riddle:
What can be written, but never seen?
Answer and Explanation
- Answer: A thought.
- Explanation: A thought can be written down but is never physically seen by others.
17. Riddle:
What is always in front of you but can’t be seen?
Answer and Explanation
- Answer: The future.
- Explanation: The future is always ahead of us, but it remains invisible until it arrives.
18. Riddle:
What is full of holes but still holds a lot of weight?
Answer and Explanation
- Answer: A net.
- Explanation: A net is full of holes but can still hold weight, such as when used to catch fish or carry items.
19. Riddle:
I have a spine but no bones. What am I?
Answer and Explanation
- Answer: A book.
- Explanation: A book has a “spine” that holds the pages together, but it doesn’t have bones, making it a clever riddle.
20. Riddle:
What comes down but never goes up?
Answer and Explanation
- Answer: Rain.
- Explanation: Rain falls from the sky but doesn’t go back up, making it a simple yet tricky riddle.
21. Riddle:
What can be cracked, made, told, and played?
Answer and Explanation
- Answer: A joke.
- Explanation: A joke can be cracked, made, told to others, or played on someone, making it a fun and versatile riddle.
22. Riddle:
What has a heart that doesn’t beat?
Answer and Explanation
- Answer: An artichoke.
- Explanation: An artichoke has a “heart,” but it doesn’t actually beat like a human heart.
23. Riddle:
What flies without wings and can sometimes make a sound?
Answer and Explanation
- Answer: Time.
- Explanation: Time “flies” as it passes quickly, and it can also “make a sound,” such as the ticking of a clock.
24. Riddle:
What has a thumb and four fingers but isn’t alive?
Answer and Explanation
- Answer: A glove.
- Explanation: A glove has a thumb and four fingers, but it’s not a living thing, making it a fun riddle for kids.
25. Riddle:
What is always in front of you but can’t be seen?
Answer and Explanation
- Answer: The future.
- Explanation: The future is always ahead of us, but it remains invisible until it arrives.
26. Riddle:
What has a spine but no bones?
Answer and Explanation
- Answer: A book.
- Explanation: A book has a spine (the part that holds the pages together), but it doesn’t have any bones.
27. Riddle:
What has many keys but can’t open a single lock?
Answer and Explanation
- Answer: A piano.
- Explanation: A piano has many “keys,” but they don’t open locks, making this a great wordplay riddle.
28. Riddle:
What has one eye but cannot see?
Answer and Explanation
- Answer: A needle.
- Explanation: A needle has an “eye” where the thread passes through, but it cannot see.
29. Riddle:
What can you break but never touch?
Answer and Explanation
- Answer: A promise.
- Explanation: A promise can be broken through actions or words, but it’s not something that can be physically touched.
30. Riddle:
What is lighter than air but weighs nothing?
Answer and Explanation
- Answer: A bubble.
- Explanation: A bubble is lighter than air and seems weightless, making this a fun and easy riddle to solve.
31. Riddle:
What can be written but never seen?
Answer and Explanation
- Answer: A thought.
- Explanation: A thought can be written down but is never physically visible to others.
32. Riddle:
What has one head, one foot, and four legs?
Answer and Explanation
- Answer: A bed.
- Explanation: A bed has a headboard (head), a footboard (foot), and four legs to support it.
33. Riddle:
What always comes but never goes up?
Answer and Explanation
- Answer: Tomorrow.
- Explanation: Tomorrow always comes, but never goes up, adding a philosophical twist to the riddle.
Conclusion: Solving the Alien Logic Riddle and More
The logic riddle about asking aliens three questions encourages us to think strategically and creatively. Whether it’s about navigating tricky situations or finding clever solutions, riddles like these challenge us to look beyond the surface and discover the hidden logic.
Do you have any favorite riddles or twists on these ideas? Share them in the comments below! We’d love to hear your thoughts and add more creative riddles to the collection.