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2 distinct vertices of an octagon are chosen at random. What is the probability that they are opposite each other?

 Oct 5, 2021
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2 distinct vertices of an octagon are chosen at random. What is the probability that they are opposite each other?     

 

One vertex can be any of them.  The one opposite can be only 1 of the remaining 7.  So, 1 out of 7.  

 Oct 5, 2021

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