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Question
Evaluate:
\[\left( \frac{1}{3} \right)^{- 4}\]
Sum
Solution
\[\left( \frac{1}{3} \right)^{- 4} = \frac{1}{\left( 1/3 \right)^4}\] → (a−n = 1/(an))
\[= \frac{1}{1/81}\]
= 18
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