通常一个数学问题是由题设条件、解题依据、解题方法、问题的结论四个要素构成的.在这四个要素中,至少有一个要素是解题必须知道的,否则就不能成为数学题,也无法解题.如果题目中的四个要素都是已知的,或者结论虽未明确指明,但它是被完全确定的,也就是说答案是固定的,这类数学问题称为封闭性数学问题.近年来,随着素质教育的展开,人们认识问 Usually a mathematics problem consists of four elements: the condition of the question, the basis for solving the problem, the method of solving the problem, and the conclusion of the problem. Among these four elements, at least one element must be known for solving the problem; otherwise, it cannot become mathematics. Problems, and can not solve the problem. If the four elements of the title are all known, or the conclusion is not clearly specified, but it is completely determined, that is to say the answer is fixed, this type of mathematical problem is called closed Sexual mathematics problems. In recent years, with the development of quality education,