Is Gaokao world's toughest exam? 10 questions from China's school test

Every year in the beginning of June, millions of students take the Gaokao, China’s National College Entrance Examination. This year, more than 10 million students took the exam across China, reports CNBC.

What is Gaokao?

Gaokao is a prerequisite for entrance to almost all higher education institutions at the undergraduate level in China. It is usually taken by students in their last year of senior high school. However, there has been no age restriction since 2001. The exams last about nine hours and are held over a period of two days, depending on the province. Chinese and mathematics are included