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Question: 1a box contains 8 marbles 4 red 2 green and...

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1.A box contains 8 marbles.  4 red, 2 green and 2 blue marbles.  If you select two marbles, without replacement, what is the probability of selecting a red marble followed by a blue marble?

 

2.A new drug is found to cause adverse reactions 3% of the time.  If 5 people are chosen at random to test the drug, what is the probability that none of the 5 patients will experience any adverse reactions. [Give answer to 4 decimal places].

 

both need working out thanks

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