五年级班报里有这样一道征答题:乐乐和莉莉经常去图书馆读书。已知乐乐每隔两天去一次,而莉莉每隔三天去一次。在6月1日这一天,她们正好在图书馆遇到,那么在整个6月份里,她们会在图书馆里遇到多少次?苏敏看过题目,认真思考起来。她认为:要解这道题,先要把题中的已知条件“……每隔两天去一次”和“……每隔三天去 Fifth grade class newspaper there is such a challenge: Lele and Lily often go to the library to study. Lele is known to go once every two days, and Lily goes every three days. On the first day of June 1, when they met at the library, how many times did they meet in the library for the whole month of June? Summin had read the topic and seriously considered it. She thinks: To solve this problem, we must first put the known conditions in the title ”... once every two days “ and ”... every three days