SOLUTION: whenever Suzan sees a bag of marbles, she grabs a handful at random. She has seen a bag containing four red marbles, two green ones, three white ones, and one purple one. She grab
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Question 1115170: whenever Suzan sees a bag of marbles, she grabs a handful at random. She has seen a bag containing four red marbles, two green ones, three white ones, and one purple one. She grabs eight of them. Find the probability of the following event, expressing it as a fraction in lowest terms.
She does not have all the green ones. Answer by ikleyn(52832) (Show Source):
In all, there are 4 + 2 + 3 + 1 = 10 marbles.
In how many ways can you select 8 marbles of 10 ? - In = = 45 ways.
How many of these combinations do not include the two green marbles ? - Only one combination.
Therefore, the probability under the question is .
