Four Red marbles numbered 1 to 4 and eight black marbles numbered 1 to 8 are put into a bag. i) One marble is drawn, colour noted and replaced. Then the second marble is drawn and replaced. What is the probability that both marbles are red? i) If four marbles are drawn at random without replacement, what is the probability that all four marbles are red? If a marble is drawn, what is the probability that the marble will be a numbered marble 4 or a black marble? ii)

Question
Four Red marbles numbered 1 to 4 and eight black marbles numbered 1 to 8 are put into a bag.
i)
One marble is drawn, colour noted and replaced. Then the second marble is drawn and
replaced. What is the probability that both marbles are red?
i)
If four marbles are drawn at random without replacement, what is the probability that
all four marbles are red?
If a marble is drawn, what is the probability that the marble will be a numbered marble
4 or a black marble?
ii)
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Transcribed Image Text

Four Red marbles numbered 1 to 4 and eight black marbles numbered 1 to 8 are put into a bag. i) One marble is drawn, colour noted and replaced. Then the second marble is drawn and replaced. What is the probability that both marbles are red? i) If four marbles are drawn at random without replacement, what is the probability that all four marbles are red? If a marble is drawn, what is the probability that the marble will be a numbered marble 4 or a black marble? ii)

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