JLPT N1 Advanced
難問
Difficult problem or hard question
Readings
Noun
A Difficult Problem / A Stumper
Refers to a specific question, riddle, or issue that is notably hard to answer or resolve.
Example
これ は 数学 史上 、 有名 な 難問 の 一つ です 。
This is one of the famous challenging problems in the history of mathematics.
4 more examples in the
mobile app