What is the chance of finding a Shiny Boldore with Everstone in just 4 or 5 encounters?

I was at Chargestone Cave and I randomly found a Shiny Boldore, caught it and it was holding a Everstone. I’m pretty sure it was 4 or 5 encounters.

Pleaselog inorregisterto add a comment.

First, the other answer is correct about how the chance of finding a shiny everstone Boldore in one encounter is 1/327,680.The chance of anything else is 1 - 1 / 327,680.The chance of anything else twice in a row is (1 - 1 / 327,680) * (1 - 1 / 327,680), or (1 - 1 / 327,680)^2.The chance of anything else n times in a row is (1 - 1 / 327,680)^n.The chance of not finding anything else n times in a row is 1 - (1 - 1 / 327,680)^n. This is the same as the chance of a shiny everstone Boldore at least once in n encounters.1 - (1 - 1 / 327,680)^4 is close to 1/81920.1 - (1 - 1 / 327,680)^5 is close to 1/65536.

Chance of Boldore 1/20 x chance of Everstone 1/2 x chance of shiny 1/8192 = 1/327,680Please correct me if math is wrong.

Chance of Boldore 1/20 x chance of Everstone 1/2 x chance of shiny (1/8192-4 from 4th encounter) = 1/327,520Is this what you mean?