Category:未解決問題
パトムスキー・クレーター
Patomskiy crater
地球科学上の未解決問題
List of unsolved problems in geoscience
医学上の未解決問題
Unsolved problems in medicine
統計学上の未解決問題
List of unsolved problems in statistics
懸賞金問題
Inducement prize contest
Template:未解決問題
Template:Unsolved problems情報理論上の未解決問題
List of unsolved problems in information theory
哲学上の未解決問題
List of philosophical problems
経済学上の未解決問題
List of unsolved problems in economics未解決問題
Lists of unsolved problems
天文学上の未解決問題
List of unsolved problems in astronomy