PokéBase - Pokémon Q&A

# How does the 7% chain break work?

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Like, at 10 chains, does that mean there’s a 70% chance of my chain breaking by then?

So, the pokeradar. Truly an interesting item. Able to assist you in a brilliant way while catching a shiny pokeymans. However, there is a problem. While doing the method, there is a 7 percent chance of the chain just...dying. (Really good explanation). As you cry yourself to sleep, you might thing that this is unfair, at 10, you get to 100, and it's stupid, ILCA should've never made the game. However, here is where probability comes in. Ok, so if there was an experiment with 10 marbles, 5 blue and 5 green marbles, the probability of getting a blue marble is 5/10, or 1/2. Then, if you picked a green marble, it would be 5/9, as you only have 9 marbles. This is what you call dependent probability, where the outcome depends on another event. Now, this is INDEPENDENT probability, the outcome of the first event does not matter to the second event. So, this is why that wouldn't work (fortunately, that would be so scuffed if you could only go to ten). So, going off of your example, I like to calculate the probability of you actually getting a mon, it makes it more obvious on what is happening.
Here is a graph to explain further: Fancy graph

So you have the probability here, the y value is the probability of the chance. For 10 encounters, it'd be 48.39%

That's what I said, and has to do with all of shiny hunting.