Final B6
lespinoza
This is my answer but I am not sure if you have to divide by something (10/5)(9/14)(5/14)+(5/15)(4/14)(3/13).
Lilyhui: March 19, 2015, 9:19 p.m.
I did the tree method and got (10*9*5+5*4*3)/(10*9*5+5*4*3+10*5*4+5*10*4). I cancelled out the 15*14*13 since they appear in both denominators