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There are 6 red balls, 5 yellow balls and 3 blue balls in a box. If 2 balls are selected at random one by one
There are 6 red balls, 5 yellow balls and 3 blue balls in a box. If 2 balls are selected at random one by one without replacement, What is the probability that the two balls are in (a) the same colour? (3 marks) (b) different colour? (2 marks] (Correct your answers to 3 decimal places.)
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