A spoken math exam was the following: There were printed tickets that contains different question (typically 3) from all math coursed tough in school. A perso

A spoken math exam was the following: There were printed tickets that contains different question (typically 3) from all math coursed tough in school. A person randomly picks the ticket (that were present, and questions unknow before you pick it) and was given time to answer the questions. After that he sit face to face with person who take the exam (typically if was the professor form university) and explain him your answer, while examiner can ask you additional questions related to your answer, etc. Based on your answer he grades you. In this system you cannot cheat the exam, since examiner will quickly realize if your answer were from cheat or you knew the subject.