calculate how many coins you can mint its simple:

coin amount / 100 x 3 = yearly minting

50000 FAIR can become 51500 after a year at 3%, on february 2 of 2016 minting reward half to 1,5%.


to calculate minting reward on age base:

yearly minting / 365 x age of transaction =  age base minting

50000 FAIR can mint after 21 days 86 FAIR





Probability is related to many factors:

amount of coins, age of transaction and minting difficulty you can check here for difficulty

https://chain.fair-coin.org/rt/connected-nodes.html

many open wallets means more competition and higher difficulty, the more days pass higher is probability until you reach the maximum weight after 90 days.