?
The value of $$\frac{{{{\left( {243} \right)}^{\frac{n}{5}}} \times {3^{2n + 1}}}}{{{9^n} \times {3^{n - 1}}}}$$ is?
Answer & Solution
Correct Answer:
Option
B
$$\eqalign{
& \frac{{{{\left( {243} \right)}^{\frac{n}{5}}} \times {3^{2n + 1}}}}{{{9^n} \times {3^{n - 1}}}} \cr
& \Rightarrow \frac{{{3^{5 \times \frac{n}{5}}} \times {3^{2n + 1}}}}{{{3^{2n}} \times {3^{n - 1}}}} \cr
& \Rightarrow \frac{{{3^n} \times {3^{2n + 1}}}}{{{3^{2n}} \times {3^{n - 1}}}} \cr
& \Rightarrow \frac{{{3^{n + 2n + 1}}}}{{{3^{2n + n - 1}}}} \cr
& \Rightarrow \frac{{{3^{3n + 1}}}}{{{3^{3n - 1}}}} \cr
& \Rightarrow {3^{\left( {3n + 1} \right) - \left( {3n - 1} \right)}} \cr
& \Rightarrow {3^{3n + 1 - 3n + 1}} \cr
& \Rightarrow {3^2} \cr
& \Rightarrow 9 \cr} $$
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