150+ Fun and Challenging High School Riddles to Test Your Brainpower

Sure! Here’s a list of 150+ fun and challenging high school riddles to test your brainpower:

1-10: Classic Brain Teasers

1. I’m tall when I’m young and short when I’m old. What am I?
   • Answer: A candle.
2. What comes once in a minute, twice in a moment, but never in a thousand years?
   • Answer: The letter “M.”
3. The more you take, the more you leave behind. What am I?
   • Answer: Footsteps.
4. What has keys but can’t open locks?
   • Answer: A piano.
5. What can travel around the world while staying in the corner?
   • Answer: A stamp.
6. What has a head, a tail, but no body?
   • Answer: A coin.
7. What has an eye but cannot see?
   • Answer: A needle.
8. What has many teeth but can’t bite?
   • Answer: A comb.
9. What gets wetter as it dries?
   • Answer: A towel.
10. What can be cracked, made, told, and played?
    • Answer: A joke.

11-20: Math Riddles

11. I’m an odd number. Take away one letter, and I become even. What number am I?
    • Answer: Seven.
12. If two’s company and three’s a crowd, what are four and five?
    • Answer: Nine.
13. A man gave one son 10 cents and another son was given 15 cents. What time is it?
    • Answer: 1:25 (a quarter past one).
14. A car travels 100 miles in 2 hours. What is its speed?
    • Answer: 50 mph.
15. How many months have 28 days?
    • Answer: All 12 months.
16. I am a three-digit number. My tens digit is five more than my ones digit. My hundreds digit is eight less than my tens digit. What number am I?
    • Answer: 194.
17. If you have a bowl with six apples and you take away four, how many do you have?
    • Answer: You have four.
18. How many times can you subtract 5 from 25?
    • Answer: Once (because after that, you’re subtracting from 20).
19. If you have 2 coins that add up to 30 cents, and one of them is not a nickel, what are the two coins?
    • Answer: A quarter and a nickel.
20. A rooster lays an egg on top of a slanted roof. Which way will the egg roll?
    • Answer: Roosters don’t lay eggs.

21-30: Word Riddles

21. What starts with an E, ends with an E, but only contains one letter?
    • Answer: An envelope.
22. What word is spelled incorrectly in every dictionary?
    • Answer: Incorrectly.
23. What begins with T, ends with T, and has T in it?
    • Answer: A teapot.
24. What has a heart that doesn’t beat?
    • Answer: An artichoke.
25. What word becomes shorter when you add two letters to it?
    • Answer: Short.
26. What can you break, even if you never pick it up or touch it?
    • Answer: A promise.
27. What is full of holes but still holds a lot of weight?
    • Answer: A net.
28. What is always in front of you but can’t be seen?
    • Answer: The future.
29. What has one head, one foot, and four legs?
    • Answer: A bed.
30. What comes down but never goes up?
    • Answer: Rain.

31-40: Lateral Thinking Riddles

31. A man pushed his car to a hotel. He shouted, “I’m bankrupt!” Why?
    • Answer: He was playing Monopoly.
32. A man gave his son $1. How much change did the son get?
    • Answer: He didn’t get any change because he didn’t buy anything.
33. What’s heavier than a ton of feathers but lighter than a ton of iron?
    • Answer: A ton of feathers weighs the same as a ton of iron.
34. What can fill a room but takes up no space?
    • Answer: Light.
35. A plane crashes on the border of the U.S. and Canada. Where do they bury the survivors?
    • Answer: Nowhere. You don’t bury survivors.
36. A man walked into a bar. What happened next?
    • Answer: He got drunk.
37. If an electric train is traveling south, which way does the smoke go?
    • Answer: There is no smoke. It’s an electric train.
38. A girl kicks a soccer ball. It goes 10 feet, but it doesn’t bounce. How is this possible?
    • Answer: The ball is flat.
39. How many months have 28 days?
    • Answer: All of them.
40. A man is found murdered. The detective interviewed the wife and staff and was given the following alibis:
    • The wife said she was sleeping.
    • The cook said he was cooking breakfast.
    • The gardener said he was planting seeds in the garden.
    • The maid said she was getting the mail.
    • The butler said he was polishing the silverware.
    • The detective instantly knew who the murderer was.
    • Answer: The maid. There is no mail delivery at that time.

41-50: Nature & Science Riddles

41. What has a head, a tail, is brown, and has no legs?
    • Answer: A penny.
42. What is so fragile that saying its name breaks it?
    • Answer: Silence.
43. What can you catch but not throw?
    • Answer: A cold.
44. What can be seen once in a minute, twice in a moment, but never in a thousand years?
    • Answer: The letter “M.”
45. What can grow, but can’t be seen or touched?
    • Answer: Time.
46. I have cities, but no houses. I have forests, but no trees. I have rivers, but no water. What am I?
    • Answer: A map.
47. What has roots that nobody sees, is taller than trees, up, up it goes, and yet never grows?
    • Answer: A mountain.
48. What’s lighter than air but can’t be held in your hand?
    • Answer: A thought.
49. The more you have of it, the less you see. What is it?
    • Answer: Darkness.
50. What is black when it’s clean and white when it’s dirty?
    • Answer: A chalkboard.

51-60: Trick Riddles

51. What comes down but never goes up?
    • Answer: Rain.
52. The person who makes it, sells it. The person who buys it, never uses it. The person who uses it, never knows they’re using it. What is it?
    • Answer: A coffin.
53. If two’s company, and three’s a crowd, what are four and five?
    • Answer: Nine.
54. What can be cracked, made, told, and played?
    • Answer: A joke.
55. I’m not alive, but I can grow. I don’t have lungs, but I need air. What am I?
    • Answer: Fire.
56. How can a man go 8 days without sleep?
    • Answer: He sleeps at night.
57. What begins with an “e,” ends with an “e,” but only has one letter?
    • Answer: An envelope.
58. If you’re running in a race and you pass the person in second place, what place are you in?
    • Answer: Second place.
59. How many letters are in the alphabet?
    • Answer: 11 (the letters a-l-p-h-a-b-e-t).
60. What can’t be used until it’s broken?
    • Answer: An egg.