9:06

[0% correct answer rate] I can solve this super difficult question asked in the exam, right? Reve...

19:57

【ガチバトル】理系でんがん VS 積サーキム、暗記も暗算も最強なのはどっちか今日決めます。

9:59

[Unpredictable] Do you know what grade this question was asked in?

33:35

After debating with Mr. Rao, a high school entrance exam expert, the school principals engaged in...

12:33

[Shocking] Do you know what grade of elementary school student could solve this problem?