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there have been 136 earthquakes in the magnitude range 4.0-5.0 in the san francisco area over the past 30 years. what is the mean recurrence interval of earthquakes in this magnitude range?
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there have been 136 earthquakes in the magnitude range 4.0-5.0 in the san francisco area over the past 30 years. what is the mean recurrence interval of earthquakes in this magnitude range?

User Zarkone
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Answer - is 0.22 years
User Ziko
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