What is the most encounters you can get before you see a shiny Pokemon in black/white?

Question

are you guarantee to see a shiny Pokemon, but you just have to wait long enough? I really want a shiny roggenrola

Comments

If you don't know how to RNG, you will just have to be lucky. It is very rare to get one.
More info
http://bulbapedia.bulbagarden.net/wiki/Shiny_Pokémon

Answer 1

There is no guarantee. Each Pokemon you encounter has a 1/8192 chance of being shiny. This number does not get larger or smaller for each Pokemon you encounter. Only shiny you are guaranteed to get is the Red Gyarados in Lake of Rage and the Black Haxorus in the Nature Preserve.

Note that 1/8192 does not mean that after 8192 Pokemon you will get a shiny. You could encounter a million Pokemon and never see a shiny. That's how probability works.