Talk:Valentine 2018 Event (US)/@comment-116.50.220.48-20180128044906/@comment-2A02:C7D:94DF:8B00:10BC:B7D5:63AF:E994-20180128135601

iirc the chance of getting the rate up servant is 70% (that's 70% of 1%, so 0.7% overall) That's assuming there is only 1 rate up servant on the banner.

Assuming that's all true, you can use this information to adjust the calculation.

99.3 (chance of failure) ^ 100 (attempts) = 0.49536446535

0.49536446535 = 49.5%

Chance of failure = 49.5%

Chance of success = 100 - 49.5 = 50.5%

You have a 50ish% chance of pulling the rate up SSR with 300 quartz (100 pulls).