SOLUTION: In a large vase are 8 roses, 5 daises, 12 lilies and 9 orchids. If 4 flowers are selected at random, find the probability that at least one of the flowers is a rose.
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Question 318318: In a large vase are 8 roses, 5 daises, 12 lilies and 9 orchids. If 4 flowers are selected at random, find the probability that at least one of the flowers is a rose.
I started by adding all the flowers and got 34 flowers. I am selecting four flowers so would it be 8/34 X 8/34 X 8/34 X 8/34? I am using the 8 cause its the number of ways to pull a rose and 34 cause its the total number of flowers
Answer by scott8148(6628) (Show Source): You can put this solution on YOUR website!
the probability of "at least one" is ___ 1 - (probability of none)
1 - [(26/34) * (25/33) * (24/32) * (23/31)]
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