Take on the challenge like a puzzle! A collection of logic quizzes that also work as brain teasers.
A set of logic riddles that let you tackle problems with the mindset of a master detective.
Enjoy quizzes that appeal to all ages, from children to adults!
Many of the questions aren’t easy to solve by just reading the text as-is—you’ll often need a flash of insight and creative thinking.
Thinking about the precise meanings of words or jotting things down on paper or a board may lead you to the correct answer.
There are plenty of humorous questions too, so they’re great for brain exercises or recreational activities.
Give them a try—from casual, easy puzzles to more difficult challenges!
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Challenge yourself like a puzzle! A collection of logic riddles that also train your brain (11–20)
It’s said that people who dislike a certain food will smile when they hear its name. What is this food that makes them smile?
See the answer
cheese
There’s a hint hidden in the words people say when a camera is pointed at them for a photo. It’s the problem where you end up making a smile at the cue of “Say cheese.” You can get the right answer by reading the question from a different angle instead of taking it at face value.
The ballpoint pen and eraser cost 110 yen in total, and the ballpoint pen is 100 yen more expensive than the eraser. How much does the eraser cost?
See the answer
5 yen
If you read the problem statement as is, it’s a quiz that makes you want to answer that the eraser costs 10 yen. If the eraser costs 10 yen, then adding the 110 yen for the ballpoint pen gives 120 yen. Since we need prices that add up to 110 yen for the eraser and the ballpoint pen together, the correct answer is that the eraser costs 5 yen and the ballpoint pen costs 105 yen.
While a police officer was on patrol, a truck driver went the wrong way down a one-way street right in front of them. The officer didn’t care at all and simply walked away. Why was that?
See the answer
Because I walked the wrong way down a one-way street
A one-way sign applies only to vehicles. There’s no problem if a person walks in the opposite direction, right? The key is to approach it flexibly instead of assuming the truck driver drove the wrong way.
I went to a sushi restaurant, drank only tea, and left, but the staff didn’t get angry. Why do you think that is?
See the answer
I bought some takeout sushi to bring home.
At sushi restaurants, they not only serve food to eat on the spot but also make sushi for takeout. Even if it looks like someone only had tea and left, the staff won’t be upset if that person bought sushi to take home. Many elementary school students today might arrive at this answer based on their own experiences using takeout or delivery services. This is a quiz where you can find the answer by carefully thinking through the situation, using familiar everyday scenes as hints.
When Mr. A, who works at an advertising company, arrived at the office, he found a sheet of paper pinned to the company bulletin board with drawings of a pudding, an octopus, and a bottle of shochu. Was Mr. A able to carry out his work smoothly that day?
See the answer
did not progress
Combining pudding (purin), octopus (tako), and the word “out of order” (koshō-chū) gives you “printer out of order” (purinta koshō-chū). Since you need a printer to print advertisements, the task won’t go smoothly. The trick to solving the puzzle is noticing the pun-like word connections.