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On any particular Saturday evening, the probability that Jenna will go to the movies and go for coffee is  1/3. The probability that she will go for a coffee, given that she has gone to the movies, is 4/7. What is the probability that Jenna will go to the movies on any particular Saturday?

 

A) 4/21

B) 5/21
C) 9/21

D) 7/12

 
 Apr 25, 2018

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