Talk:Thunderbolt/@comment-95.245.99.202-20130610094252/@comment-95.245.99.202-20130610105910

P(E) = Standard chance of explosion for an arrow with max mod level

P(1E|TA) = Chance of 1 explosion (1E) supposing that the event 'TA' occurred

P(2E|TA) = Chance of the 2 explosions (2E)supposing that the event 'TA' occurred

P(2E|TA) = P(2E) = Chance of both arrows to explode (event can't exist for 'OA')