现代社会对破译密码的难度要求越来越高,颇有些神秘的色彩,许多同学认为深不可测、力不能及!在2004年全国各省市中考试题中频频出现以“破译密码”为素材的试题,该类试题取材于现代生活的新领域,不仅反映有价值的基础数学知识、基本数学思想的广泛应用,还考查广大中学生灵活应 Modern society has increasingly high difficulty in deciphering passwords. It has some mysterious colors. Many students think that it is unfathomable and unstoppable! In 2004, exam questions in the provinces and cities across the country frequently used “decipher password” as the material These questions are based on new areas of modern life. They not only reflect the extensive use of valuable basic mathematics knowledge and basic mathematics ideas, but also examine the flexibility of the majority of middle school students.