Hainan normal university mathematics 18 subjects enter oneself for an examination. Hainan Normal University is basically dissatisfied with other disciplines except some popular ones. The subject mathematics major plans to enroll 18 students in 22 years, with a certain expansion. The actual number of students enrolled is 20, and the actual number of students enrolled over the years is more than the planned number. The retest score line is 34 1 ..