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There are 1000 students in a college. Among the 1000 , 200 students are taking
Spanish, and 100 students are taking Portugese. There are 50 students taking both

What is the probability that a randomly selected student is taking Portugese, given that
he/she is taking Spanish? 

I know the formula, all I need to know is what is event B? Portugese 
(100/1000) or is event B Spanish (200/1000)?

Just need to know Portugese or Spanish. No calculation nothing needed. Just which one.

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