Probability question:
A bag contains 12 coloured balls. Five of the balls are red and the rest are blue. A ball is drawn at random from the bag. It is then replaced and a second ball is drawn. The colour of each ball is recorded.
The first question asks me to list the possible outcomes of the experiment which I did without problems. The next one however, is where I am stuck.
(b) Calculate the probability that:
(i) The first ball is blue

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5 - red
12-5=7 blue
Ball is randomally drawn twice with replacement.

BR
BB
RB
RR
those are possible outcomes,
(and would have been even without replacement)

(b) probability of what?

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