Talk:Thunderbolt/@comment-174.89.31.31-20130601182803/@comment-174.89.31.31-20130602023627

Exactly, .51 (probability of at least one exploding with 2 arrows) and divide that by .3 you get 1.7, not 2. Not twice as likely an (at least one) arrow will explode with two arrows.

I hope first replier isn't the one teaching that course ^_-