An insurance company classifies drivers as low-risk, medium-risk and high-risk. Of those insured, 60% are low-risk, 30% are medium-risk and 10% are high-risk. After a study, the company finds that during a 1-year period, 1% of the low-risk drivers had an accident, 5% of the medium-risk drivers had an accident and 9% of the high-risk drivers had an accident.
If two drivers who had an accident during the 1-year period are selected, what is the probability that at least one of them has been classified as high-risk?
Answer: 0.51
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