标题: 数学模拟题求教！ [打印本页] 作者: samldy 时间: 2013-11-4 21:41 标题: 数学模拟题求教！ Hi there!
I'm very much appreiciated any help on this:
2 is a factor of 13!+2, since it is a factor of both 13! and 2.
How could 2 be a factor of 13! and 2, so it is a factor of when they are added together?作者: 乔豆麻袋 时间: 2013-11-4 22:24
2b+2c=2(b+c)。。。。额。。。楼主你能明白我意思么？作者: samldy 时间: 2013-11-5 22:46
