HEREDITY
BASICS OF PROBABILITY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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A bag has 2 yellow marbles and 8 brown marbles. Nancy takes out two marbles without replacing the marbles. What is the probability that they will both be yellow?
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2/19
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1/10
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1/25
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1/45
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Explanation:
Detailed explanation-1: -That marble is then returned to the jar, and a marble is withdrawn once more at random. The probability of it being yellow is again 7 in 16. Now the probability of getting yellow marble twice is the product of the two probabilities, or (7/16)*(7/16), which equals 0.1914, which is 19.14%.
Detailed explanation-2: -AI Recommended Answer: The probability of drawing two yellow marbles if the first one is NOT placed back into the bag before the second draw is
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