agree

来源: newton123 于 2016-11-22 09:44:02 [档案] [博客] [旧帖] [给我悄悄话] 本文已被阅读：次 (378 bytes)

回答: 这种题纯粹是胡诌八扯，额外的运算符没有给出，还故作高深由 horse625 于 2016-11-01 15:30:49

The sum of any two positive odd numbers is even.

The sum of an even number and an odd number is odd.

Therefore the sum of three positive odd number is odd.

This question is to ask to get an even number (30) from the sum of three odd numbers.

If there is a solution, it must not be mathematical solution!!!

您的位置：文学城 » 论坛 » 脑筋急转 » agree

发现Adblock插件