标题: math questions [打印本页] 作者: juleyi 时间: 2002-6-14 03:00 标题: math questions
1. If a integer n is divisiable by n1,n2,n3,...and nk ( n1, n2,... are integer)then n must also be dividiable by the least common multiple of n1,n2,n3,...and nk.
Is it a property of the divisibility of integers?
For example, what is the least positive integer,that is divisible by 1,2,3,...9
2. PI(3.1415926535....,the ratio of the circumference of a circle to its
diameter) recurs per 100 digits after the decimal point ?
Is PI a irrational number? ( Irrational number doesn't recuring ?)
Thanks a lot!作者: amaos 时间: 2002-6-14 12:12
1.对啊
2.PI is a irrational number作者: juleyi 时间: 2002-6-14 12:38
