Talk:Priestess Snow Miku (7★)/@comment-29702769-20180207200455/@comment-26140304-20180208000208

That's not how probability works. If you're looking for a set probability of summoning a unit at a specific number of summons, the formula is a bit more complicated than adding the numbers up.

1-(.99*.985*.98*.975*.97*.965*.96*.95*.95*.95)=0.28213

So taking into account of the increasing rates for each summon and the constant 5% that doesn't reset from the 8th summon onward, you get a calculated 28.213% chance of summoning Miku on the 10th summon.