1.

Simplify \[{{\left[ {{\left( \frac{2}{17} \right)}^{-6}}\div {{\left( \frac{2}{17} \right)}^{4}} \right]}^{4}}\times {{\left( \frac{2}{17} \right)}^{-18}}\] 

A.  \[{{\left( \frac{2}{17} \right)}^{-20}}\]        
B.         \[{{\left( \frac{17}{2} \right)}^{-20}}\]       
C.  \[{{\left( \frac{2}{17} \right)}^{-28}}\]             
D.         \[{{\left( \frac{17}{2} \right)}^{-28}}\]
E.  None of these
Answer» D.         \[{{\left( \frac{17}{2} \right)}^{-28}}\]


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