In a neighborhood with 1,000 houses, 5 catch fire (but are not damaged by high winds), 7

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In a neighborhood with 1,000 houses, 5 catch fire (but are not damaged by high winds), 7 are damaged by high winds (but do not catch fire), and the rest are unharmed during a one-year period. What is the probability that a house is harmed by fire or high winds?
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