A bag contains 5 blue marbles 6 red marbles and 9 green marbles two marbles are drawn at random one at a time and without replac ement what is the probability of selecting two red marbles
2 answers:
Answer:3/38
Step-by-step explanation:
Sample space={5 B + 6 R + 9 G} = 20 (all possible outcomes Favorable outcome ={6 R} = 6 P(1st Drawing R) = 6/20 = 3/10 Once drawn and not replaced the total remaining marble = 19 and within the 19, there are 5 Red left. So P(2nd Drawing R) = 5/19 P( 1st AND 2nd R) = (3/10)x(5/19) = 3/38 = 0.0789
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Step-by-step explanation:
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