Re: a few more general GRE math problems

[Cary]

On 31 Dec 2006 01:39:23 -0800, "john" <johnboy98105@xxxxxxxxx> wrote:

The other Q's have been addressed.

>Q2:
>  x > 1
>  y > 1
>
>What is greater?  1 / ( 1/x + 1/y)  or 1/x + 1/y     that is...
[snip]
>I can't get why you need more info to determine the relantionship..
>What's the trick here?

Just consider only the case x = y.  Then the problem only involves
having to compare

   x/2  versus  2/x

Since either of these can be "the greater", more info is needed.