Public Quiz Again

This issue is a historical issue.

The difficulty is the highest difficulty with 5 stars, and 3,000 people challenged it, but only about 3% of the challengers got the correct answer.

That's right! great.!

By solving the highest difficulty problem, you have answered 10 questions in a row so far, so a total of 10 level.

If you get one more correct answer, you will become the world's best, a new world record.

Now, would you like to try?

* What's New?
- Various quizzes with 10 topics and 10 difficulty levels. Thousands of questions, and a huge amount of quizzes added all the time.
- A quiz with various, pretty pictures as hints. Quiz with fun phone hints, statistical hints and detailed commentary.
- A quiz that gives a record of the quiz and various rewards. A quiz that analyzes my brain by providing statistics for each topic.
- If you get the best level, you can buy a castle in each city in Korea. A quiz where you can become the owner of the castle and show off your skills.

* How to play
- You just need to look at the problem and choose the correct answer from the 4 options presented.
- You can also look at the cool picture related to the problem as a hint.
- If it is difficult, you can use phone hints and statistical hints.
- If it is still difficult, you can use short explanation hints and long explanation hints.
- If you get the correct answer, you can see the answer selected by other people together.
- A long description of the problem is really helpful. we are learning
- If you click the link in the commentary, you can see the source and more detailed explanation.

Thank you.