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A survey of middle-aged men reveals that 28% of them are balding at the crown of their heads. Moreover, it is known that 18% of all middle-aged men who have this balding pattern will suffer a heart attack in the next 10 years. Eleven percent of middle-aged men who do not have this balding pattern will suffer a heart attack in the next 10 years. What is the probability that a middle aged man will suffer a heart attack in the next ten years?

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