Good Source for Number Property ????????????

[paban]

Hello Friends,

Even though, it looks easy, I am having problem with Number Property math questions. Whenever I come across long wordy NP problems, I get confused what actually it is looking for. SO, if any one have any documents or any thing about Number Property which details-Tricks and Way to solve them, please share with us. All collegues like me will appreciate your help.

Thank you

[madhur_ahuja]

That will be of great help ...

[tomintampa]

I bought Manhattan GMAT's number properties and found it to be adequate for GRE prep level. However, the GMAT is more number property intensive, so I would just delve into the OG and understand all the answers.