Difficult. Generally speaking, the math test for six special students in Nanjing is one of the more difficult ones. The following are some factors that make it difficult: Six special students in Nanjing usually adopt multiple-choice questions or open-ended questions, requiring candidates to use what they have learned to solve complex problems in a limited time. Topic design involves many mathematical fields and concepts, and needs to comprehensively use different ways of thinking and problem-solving methods.