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0
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avatar+139 

I feel bad.. 

 
LaughingFace  Apr 16, 2018
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 #1
avatar+85736 
+1

P ( L l R )   =  P(L and R)  / P (R)

 

Rearranging this  we have that

 

P(R)  =  P (L and R)  / P(L l R)  = 0.03  / 0.0625 

 

 

 Second one.....we have  60 girls....18 prefer a clay court...so the probability of choosing a girl at random who prefers a clay court  is  18 / 60  =  3 / 10

 

cool cool cool

 
CPhill  Apr 16, 2018
edited by CPhill  Apr 16, 2018

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