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 total number of balls (10) a) complete the tree diagram
b) Work out the probability that a player will select a red ball
c) the same player is going to play the game 200 times consecutively. How many black balls should he expect to pick?
Ni because if you divide or mulriply the denominator you have to multiply or divide the numerator by the same amount. It is not possible dince you can divide the denominator by 2 to get 3 but you cant divude 5 by 2 and get an evn number