Answer:
P(C) = 5/9
Explanation:
To find the probability of at least one, we have to use the formula
P(at least one) = 1 - Probability of none
P(none) = 2/3
The number of times = 2
P(C) = 1- (2/3)^2
= 1 - 4/9
Now we have to simplify it.
P(C) = (9 -4)/9
P(c) = 5/9
The answer is P(C) = 5/9
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