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Dont copy 12. A total of 5 marbles is selected at random from a jar of marbles. The jar contains 4 sets of different coloured

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12. A total of 5 marbles is selected at random from a jar of marbles. The jar contains 4 sets of different coloured marbles, with each colour having marbles numbered from 1 through to 10. (a) What is the probability that there are 3 numbered '4', and 2 numbered '7'? (b) Find the probability that the ve selected marbles contain at least four marbles of the same colour

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