Question 439779: 1. How many combination are there of 9 identical cars if I am picking 3 of them to test drive?
2. A garden has a total of 10 flowers. Three are yellow, two are white, and five are blue. If you select 2 at random without replacement, find the probability that
a. non of the flowers are yellow
b. at least one of the flowers are yellow
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! 1. How many combination are there of 9 identical cars if I am picking 3 of them to test drive?
9C3 = (9*8*7)/(1*2*3) = 84
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2. A garden has a total of 10 flowers. Three are yellow, two are white, and five are blue. If you select 2 at random without replacement, find the probability that
a. none of the flowers are yellow::: 7/10
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b. at least one of the flowers is yellow
P(at least one) = 1 - P(none is yellow)
= 1 - 0.7
= 0.3
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Cheers,
Stan H.
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