A certain list contains several different integers. Is the product of the integers in the list positive?
1) The product of the greatest and the smallest of the integers in the list is positive 2) There is an even number of integers in the list 但是C A为什么不行呢 最大的和最小的积都是正数 那么另外两个必然和他们同号啊 那么积难道不是正数的吗??