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44 votes
ANYONE SMART AT MATH NEED HELP ON THIS

A bag of marbles contains 6 blue marbles and 1 green marble. Mary and Frank will draw a blue marble followed by a green marble, without replacing the first marble. Mary says the probability will be 6/49, and Frank says that the probability will be 1/7. Who is correct? Explain and justify your answer by showing work.
---------------Is correct because___________________________

User Mahmood Kohansal
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1 Answer

27 votes
27 votes

Answer:

It's been a hot minute since I have done these, but if I'm correct the answer is 13%

Explanation:

6/7 is .86 or an 86% chance. Followed by 1/6 which is .16 or a 16% chance. .86 multiplied by .16 is .13 giving the sequence a 13% chance.

User Ashiq
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2.9k points