Math issue, isn't it?

[Giovanni Cannizzaro]

First of all, thank u for ur reply!
I've senn my question it's flaming, right now!!!

But my last and most important questions are:
in what measure I can trust in Revolution's logical
valutation? Why Revolution replies in this way to
a so simple question? In what condition I've to
expect these strange behaviors?

Hoping u can open my eyes!!!
See u guys!