我们知道,2的倍数的整数是偶数。了解了什么是偶数以后,我们就可以根据偶数的性质来解决一些实际问题。请看这样一道题:甲、乙、丙、丁四个旅游团分别有游客69人、85人、93人和97人。现在要把这四个旅游团分别进行分组,使每组都有a人,以便乘车参观游览。如果甲、乙、丙三个团分成每组a人的若干组后所剩下的人数都相同,那么丁旅游团分成每组a人的若干组后还剩下多少人?由题意可知,甲、乙、丙三个旅游团的人数都是奇数,而且分成每组a人的若干组后所剩下的人数都相同。这样,根据偶数的 We know that the integer multiple of 2 is even. Knowing what is even, we can solve some practical problems based on even numbers. Look at such a question: A, B, C, D four tourist groups were tourists 69, 85, 93 and 97 people. Now it is necessary to group the four tour groups, so that each group has a people in order to travel by car. If A, B, C three groups into a group after a few groups of people remaining the same number of people, then the small tour group is divided into groups after a group of a few people left? From the title we can see, The numbers of A, B and C are all odd numbers, and the number of people remaining in each of the groups a is the same. This way, according to even numbers