57. 4761-!-item-!-187;#058&003968
A certain list consists of several different integers. Is the product of all
the integers in the list positive?
(1) The product of the greatest and smallest of the integers in the list is
positive.
(2) There is an even number of integers in the list.
答案:C
想問一下(2)怎麼和(1)合併呢? 覺得很怪
(2)是說共有偶數個整數 那為什麼就可以和(1)合併 得到答案，非常不能理解
麻煩各位了謝謝
--
※ 發信站: 批踢踢實業坊(ptt.cc)
◆ From: 122.120.160.54