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Question Stats:
59% (00:57) correct 40% (00:47) wrong based on 136 sessionsQuantity A 
Quantity B 
\(\frac{1}{\frac{1}{x} + \frac{1}{y}}\) 
\(\frac{1}{x} + \frac{1}{y}\) 
Quantity A 
Quantity B 
\(\frac{1}{\frac{1}{x} + \frac{1}{y}}\) 
\(\frac{1}{x} + \frac{1}{y}\) 


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