Talk:"Ancient Japan's Got Talent!"/@comment-50.9.230.229-20131127072024/@comment-70.166.177.77-20131127073307

Yeah, I haven't done math in a while, but my reasoning was this: each day is an independent event of getting a 5* card, set at 1.35%. That means theres a 98.65 chance of not getting a 5* card. The probability of getting AT LEAST one 5* card should be 1 minus the probability of getting only 3* and 4* cards over a course of thirty days.

Hence,

1 - (.9865^30) = .3348 or so