130+ Logic Riddles with Answers to Test Your IQ
Logic riddles are puzzles that make you think and have fun at the same time. They help improve your problem-solving skills and make your brain sharper. This collection has riddles for everyone. You will find easy riddles for beginners, fun puzzles for kids and teens, tricky challenges for adults, and some of the hardest riddles ever.
There are also math riddles, truth and lie puzzles, river crossing puzzles, and difficult choice puzzles. Each riddle comes with an answer so you can check yourself and learn new ways to think. This guide is perfect for anyone who loves puzzles or wants to challenge their mind.
Logic Riddles with Answers
1. What has keys but can’t open any locks?
Answer: A piano
2. What gets wetter the more it dries?
Answer: A towel
3. What can run but never walks?
Answer: A river
4. What has a head and a tail but no body?
Answer: A coin
5. What goes up but never comes down?
Answer: Your age
6. What has many teeth but can’t bite?
Answer: A comb
7. What can fill a room but takes up no space?
Answer: Light
8. What has hands but can’t clap?
Answer: A clock
9. The more you take, the more you leave behind. What is it?
Answer: Footsteps
10. What has one eye but can’t see?
Answer: A needle
11. What comes once in a minute, twice in a moment, but never in a thousand years?
Answer: The letter “M”
12. What can you catch but not throw?
Answer: A cold
13. What has a neck but no head?
Answer: A bottle
14. What has a heart but no other organs?
Answer: An artichoke
15. What breaks but never falls, and what falls but never breaks?
Answer: Day breaks, night falls
Easy Logic Riddles for Kids
16. What has four legs but can’t walk?
Answer: A table
17. What is always in front of you but can’t be seen?
Answer: The future
18. What has a face and two hands but no arms or legs?
Answer: A clock
19. What has one eye but can’t see?
Answer: A needle
20. What goes up when rain comes down?
Answer: An umbrella
21. What has a tail but no body?
Answer: A coin
22. What can you hear but not touch?
Answer: Your voice
23. What has ears but can’t hear?
Answer: Corn
24. What has a ring but no finger?
Answer: A phone
25. What is full of holes but still holds water?
Answer: A sponge
26. What runs around a backyard but never moves?
Answer: A fence
27. What is light as a feather but even the strongest person can’t hold it for long?
Answer: Breath
Logic Riddles for Teens
28. I speak without a mouth and hear without ears. What am I?
Answer: An echo
29. I have branches, but no fruit, trunk, or leaves. What am I?
Answer: A bank
30. What can travel around the world while staying in one place?
Answer: A stamp
31. What has an eye but cannot see?
Answer: A needle
32. What comes down but never goes up?
Answer: Rain
33. What has many keys but can’t open a single lock?
Answer: A keyboard
34. What has a thumb and four fingers but is not alive?
Answer: A glove
35. What gets bigger the more you take away from it?
Answer: A hole
36. What has a neck but no head, and two arms but no hands?
Answer: A shirt
37. What can be broken but never held?
Answer: A promise
38. What has legs but doesn’t walk?
Answer: A table
39. What goes through cities and fields but never moves?
Answer: A road
Logic Riddles for Adults
40. I shave every day, but my beard stays the same. Who am I?
Answer: A barber
41. What has cities, but no houses; rivers, but no water; and forests, but no trees?
Answer: A map
42. Before Mount Everest was discovered, what was the highest mountain?
Answer: Mount Everest
43. What can you hold in your left hand but not in your right?
Answer: Your right elbow
44. The more you take, the more you leave behind. What is it?
Answer: Footsteps
45. What comes once in a year, twice in a week, but never in a day?
Answer: The letter “E”
46. What has an end but no beginning?
Answer: A circle
47. What gets sharper the more you use it?
Answer: Your brain
48. What has words but never speaks?
Answer: A book
49. What can’t talk but will reply when spoken to?
Answer: An echo
50. What has a bed but never sleeps?
Answer: A river
51. What breaks but never falls?
Answer: Day
See also 160+ Confusing Riddles with Answers
Tricky Logic Riddles
52. A man pushes his car to a hotel and tells the owner he’s bankrupt. Why?
Answer: He is playing Monopoly
53. How can a man go eight days without sleep?
Answer: He sleeps at night
54. If you have me, you want to share me. If you share me, you lose me. What am I?
Answer: A secret
55. What can be seen once in a minute, twice in a moment, and never in a thousand years?
Answer: The letter “M”
56. A man looks at a photo and says, “Brothers and sisters I have none, but that man’s father is my father’s son.” Who is in the photo?
Answer: His son
57. What can fly without wings and cry without eyes?
Answer: A cloud
58. You see a boat filled with people, yet there isn’t a single person on board. How?
Answer: All are married
59. What has a heart but no other organs?
Answer: An artichoke
60. What runs but never walks, has a mouth but never talks?
Answer: A river
61. I have no life, but I can die. What am I?
Answer: A battery
62. What comes at the end of everything?
Answer: The letter “G”
63. A man walks in the rain without an umbrella and doesn’t get wet. Why?
Answer: He is bald
Math Logic Riddles
64. I am an odd number. Take away one letter and I become even. What number am I?
Answer: Seven
65. If two’s company and three’s a crowd, what are four and five?
Answer: Nine
66. What is three-sevenths chicken, two-thirds cat, and two-fourths goat?
Answer: Chicago
67. I add five to nine and get two. How?
Answer: On a clock
68. What has more letters than the alphabet?
Answer: The post office
69. If you multiply me by any number, the answer stays the same. What number am I?
Answer: Zero
70. I am a three-digit number. The sum of my digits is 15. The middle digit is 5. What number am I?
Answer: 555
71. Divide 30 by half and add 10. What do you get?
Answer: 70
72. If it takes 5 machines 5 minutes to make 5 items, how long would 100 machines take to make 100 items?
Answer: 5 minutes
73. What number do you get when you multiply all the numbers on a telephone keypad?
Answer: Zero
74. A farmer has 17 sheep and all but 9 die. How many are left?
Answer: 9
75. I am a number that looks the same upside down. What number am I?
Answer: 8
Lying or Telling the Truth Logic Puzzles
76. A man says, “I am lying.” Is he telling the truth or lying?
Answer: It’s a paradox — impossible to determine
77. Two doors: one leads to freedom, one to death. One guard always lies, one always tells the truth. You can ask one question. What do you ask?
Answer: Ask either guard which door the other guard would say leads to freedom, then take the opposite door
78. A boy tells his father, “I will not lie today.” He then lies. What is he doing now?
Answer: Telling the truth
79. A man says, “This statement is false.” Is it true or false?
Answer: Neither — it’s a paradox
80. You meet two people. One always lies, one always tells the truth. One says, “We are both liars.” Who is speaking?
Answer: The liar
81. A woman says, “I always lie.” Is she telling the truth?
Answer: No — it’s a paradox
82. Two guards stand at two doors. One lies on Mondays, the other tells the truth on Mondays only. What day is it if both say the same thing?
Answer: Monday
83. A sign says, “This sign is false.” Is the sign true?
Answer: Neither true nor false
84. One person says, “I am a liar.” What is he?
Answer: A liar
85. You ask a liar, “Is this the truth?” What will he say?
Answer: He will lie
86. A truth-teller says, “I will lie tomorrow.” Is he lying today?
Answer: No
87. Two people say, “Only one of us is telling the truth.” Who is telling the truth?
Answer: The liar
River Crossing Logic Puzzles
88. A farmer must cross a river with a wolf, a goat, and cabbage. How does he do it?
Answer: Take goat first, return alone, take wolf, bring goat back, take cabbage, return alone, take goat
89. A man needs to cross a river with a fox, a chicken, and grain. How does he do it?
Answer: Same method: chicken first, then fox, then grain
90. Three people need to cross a river with a boat that holds two. How many crossings are needed?
Answer: Five
91. Two boys weighing 50 kg each and one man weighing 100 kg need to cross a river. Boat holds 100 kg. How?
Answer: Boys cross, one returns, man crosses alone, other boy returns, boys cross again
92. A man and his son need to cross a river at night with one torch. Who goes first?
Answer: The son
93. A bridge can hold only two people. Four people must cross with one torch. How do they do it fastest?
Answer: Two fast cross, one returns, two slow cross, one fast returns, two fast cross
94. A man needs to cross a river with two bags and a boat that holds one bag at a time. How many trips?
Answer: Three
95. A farmer has a lion, a goat, and grass. How does he cross?
Answer: Same pattern: goat first
96. A family of four must cross a river with a boat that holds two. How many trips?
Answer: Five
97. A man must cross with three friends using a boat that holds two. How many crossings?
Answer: Five
98. A ferryman can take only one passenger at a time. How does he get three people across?
Answer: Multiple back-and-forth trips
99. A man needs to cross a river but the boat leaks. How does he succeed?
Answer: He rows quickly before it sinks
See also 160+ River Riddles with Answers
Deadly Choices Logic Puzzles
100. You must choose one of three doors. One has fire, one has lions that haven’t eaten in years, and one has poison gas. Which do you choose?
Answer: The lions — they would be dead
101. A man must choose between jumping into a pit of snakes or staying in a locked room with no air. What should he choose?
Answer: The snakes — most are harmless
102. You must drink one of two bottles. One is poison, one is safe. Both look the same. How do you survive?
Answer: Don’t drink any
103. A woman must choose between a room full of armed guards or a room on fire. What should she choose?
Answer: The guards — they won’t attack
104. A man is forced to jump from a plane without a parachute. How does he survive?
Answer: The plane is on the ground
105. You must cross a bridge that collapses when walked on. How do you survive?
Answer: Don’t walk — crawl
106. You must choose between drowning or starving. Which do you choose?
Answer: Starving — it takes longer
107. A man must enter one of three rooms: fire, assassins, or a room with no oxygen. Which is safest?
Answer: The assassins’ room — they are asleep
108. You must choose between being frozen or burned. Which is safer?
Answer: Frozen
109. A man must drink from one of three cups. Two are poisoned. How does he survive?
Answer: Knock them all over
110. You must choose between electric shock or falling. Which do you choose?
Answer: Falling
111. A man is trapped and must choose a door quickly. How does he survive?
Answer: He waits — help arrives
Hard Logic Puzzles for Adults
112. A man lives on the 10th floor. He takes the elevator down every day but walks up unless it’s raining. Why?
Answer: He is too short to reach the top button
113. I speak all languages but have no mouth. What am I?
Answer: An echo
114. What disappears the moment you say its name?
Answer: Silence
115. A man is found dead in a field wearing a backpack. Why?
Answer: He was skydiving and the parachute failed
116. You see me once in a year, twice in a week, but never in a day. What am I?
Answer: The letter “E”
117. Two fathers and two sons sit down to eat three eggs. Each person gets one egg. How?
Answer: They are a grandfather, father, and son
118. A man pushes his car and loses all his money. Why?
Answer: He is playing Monopoly
119. What has no beginning, end, or middle?
Answer: A circle
120. A woman shoots her husband, then holds him underwater, then hangs him. Why?
Answer: She is a photographer
121. A man leaves home, turns left three times, and returns home to find two masked men. Who are they?
Answer: The catcher and umpire
122. What gets sharper the more you use it?
Answer: Your mind
123. What can’t be used until it’s broken?
Answer: An egg
Hardest Logic Puzzles Ever
124. A man looks at a portrait and says, “I have no brothers or sisters, but that man’s father is my father’s son.” Who is in the picture?
Answer: His son
125. Two men are found dead in a locked room. There is broken glass and water on the floor. What happened?
Answer: They were fish
126. A prisoner must choose one statement to say that guarantees freedom. What does he say?
Answer: “You will not release me.”
127. A man is pushed out of a plane but survives. How?
Answer: The plane is on the ground
128. Three switches control three bulbs in another room. How do you find which switch controls which bulb?
Answer: Use heat — turn on two switches
129. You meet two guards. One lies, one tells the truth. What single question do you ask?
Answer: Ask what the liar would say
130. A man dies of thirst while surrounded by water. Why?
Answer: The water is saltwater
131. A woman gives a beggar money. The beggar becomes angry. Why?
Answer: She gives him a fake coin
132. A man wakes up and realizes he must die today. How does he know?
Answer: It’s his execution day
133. A man walks into a bar and asks for water. The bartender points a gun. The man says thank you and leaves. Why?
Answer: He had hiccups
134. What comes at the end of time and space?
Answer: The letter “E”
135. A man crosses a desert with no supplies and survives. How?
Answer: He follows a road
See also 180+ Food Riddles with Answers
FAQs
Conclusion
Logic riddles are more than just fun. They help you think clearly, solve problems, and become better at reasoning. From simple puzzles for kids to the hardest riddles for adults, this collection has something for everyone.
By practicing these riddles, you can improve your brain skills while enjoying the challenge. Keep solving them and you will see your thinking become faster, sharper, and more creative.
