Question

a game consists of randomly choosing a bag (labelled 1,2 or 3) out of a choice of 100, and then again randomly, picking a ball (red or black) from it. each bag has the same number of total balls (10)

Answer 1

see below

Explanation:

a- 0.2

as 0.35 + 0.45=0.8

1-0.8=0.2

c. 112

b. im not sure what b is but if i work it out ill add it as an additional comment :)