Talk:Valentine 2018 Event (US)/@comment-116.50.220.48-20180128044906/@comment-2A02:C7D:94DF:8B00:10BC:B7D5:63AF:E994-20180128120935

The math to work out how likely you are of not getting what you want after X number of attempts is this:

''Chance of failure to the power of the number attempts. ''

0.99 (chance of failure) ^ 100 (attempts) = 0.36603234127

0.36603234127 = 36.66%

Chance of failure = 36.66%

Chance of success = 100 - 36.66 = 63.34%

You have a 63ish% chance of pulling 1 SSR with 300 quartz (100 pulls).