What books about mathematics did senior two in Anhui Province learn last semester? According to the data query of Grade Three,

1, science: compulsory 2 (elementary analytic geometry and solid geometry), elective 2- 1 (conic curve), elective 2-2 (classification and counting principle), elective 2-3 (permutation and combination);

2. liberal arts: compulsory course 2 (preliminary analytic geometry and solid geometry), elective course 1- 1 (plane geometry), elective course 1-2 (counting principle)