Respuesta :

charstar
a) 2/4

b) i: 2/5*1/4= 2/20=1/10
    ii:(3/5*2/4)+(2/5*3/4)=(6/20)+(6/20)=3/10+3/10=6/10

c) It seems like there is a lack of information on the tree diagram so I could not answer this.

Hope this helps :)