Thread:Jumpieraverage/@comment-25730832-20160825122428

Jumpier's Guide - Drop Chance Probability / Runs
This is a guide to find out how approximately how many runs are required to get your desired ship drop. All it takes is a simple formula, which calculates the relative amount of times (typically S ranks) on nodes to almost guarantee your ship. All of us wonder when we will eventually get ships such as Prinz and Kashima, so this article tries to answer that specific question.

The expression below calculates the percentage (%) that you will get a drop given a certain quantity of runs.

1 - ( ( 1 - x ) ^ y )



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