JJ为202t，求助思路

albert

以下是引用bettyofarim在2003-7-24 15:59:00的发言：
12) s is a product of two integers from 100 to 200 inclusive, t is a product of two integers from 100 to 201 inclusive, what is the value of (1/s)+(1/t)?


JJ为202t，求助思路 ，怎么确定S 和T中的那2个数那？

I think there is some problem in this question... it is different from the question I read in one JJ, though similar...the problem is we can't get two specific numbers, how can we dicide the value of s and t?
wondering....

wanglijie

pls explain in detail.

Herbert

1/s=1/(100*----200); 1/t=1/(100*-----201)  通分相加后即可．这是五月的ＪＪ．应该很容易的．你的问题＂怎么确定S 和T中的那2个数那？＂是什么意思，那两个数是什么数呀？

bettyofarim

12) s is a product of two integers from 100 to 200 inclusive, t is a product of two integers from 100 to 201 inclusive, what is the value of (1/s)+(1/t)?


JJ为202t，求助思路 ，怎么确定S 和T中的那2个数那？