昨天,丁丁代表学校去参加了一场团体操比赛。今天早上一进教室,同学们就围了上来,七嘴八舌地问这问那,丁丁不厌其烦地一一作答。终于轮到冬冬提问了,他问道:“丁丁,我们学校这次参加团体操比赛的共有多少人啊?”丁丁回忆道:“我们排的是一个方阵,从前往后数我是第3个,从后往前数我也是第3个。我左边有2个人,右边也有2个人。” Yesterday, Tintin represented the school to attend a group gymnastics competition. When I entered the classroom this morning, the students rounded up and asked questions, but Tintin took the trouble to answer it one by one. Finally winter turn to ask questions, he asked: “Tintin, the total number of people participating in the gymnastics competition in our school ah?” “Tintin recalled: ” We are a square array, from the back count me Is number 3, number 3 from back to back, and there are 2 people on my left and 2 on the right. “”