runners from a particular country entered the new york marathon each year for the last 5 years and placed in the top 3 the probability of placing in the top 3 next year is

Question

anonymous · Answer

is this the whole problem? do they tell you how many runners there are total? or their past results over 5 years ago? if they placed in the top 3 the last five years and have never placed any lower, then the probibility of finishing in the top five would be 100% since there is no other result to compare to