Correct solutions were also received from Ray Kremer,  Felice Kelly, and from Bradley alumnus Brian Laughlin, as well as from Robert T. McQuaid, David Tietjen, Bouras Vasilis, Jack Wang, and Christopher Giesbrecht. Two incorrect solutions were submitted. 

Lisa Brands observes that in order to count how many ways one team could win the World Series you only have to count how many ways that team could win
four out of seven games.  This is computed by the binomial coefficient 7 choose 4, which has the value
 

Since there are two teams, you have to double this number to give you 70 ways for the World Series to be played.

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