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Question

The value of $\sqrt[5]{\frac{32}{243}}$ is ________.

This question was previously asked in
RRB NTPC 2019 CBT 1 Question Paper (8-Mar-2021) (Shift 2)
The correct answer is
$\frac{2}{3}$

Solving the Fifth Root of 32/243

The question asks for the value of the expression $\sqrt[5]{\frac{32}{243}}$.

Fifth Root Calculation Steps

  1. Apply Root Property: The fifth root of a fraction can be written as the fraction of the fifth roots:

    $ \sqrt[5]{\frac{32}{243}} = \frac{\sqrt[5]{32}}{\sqrt[5]{243}} $

  2. Evaluate Numerator: Find the number that, when multiplied by itself five times, equals 32. This is $2^5 = 2 \times 2 \times 2 \times 2 \times 2 = 32$. So, $\sqrt[5]{32} = 2$.

  3. Evaluate Denominator: Find the number that, when multiplied by itself five times, equals 243. This is $3^5 = 3 \times 3 \times 3 \times 3 \times 3 = 243$. So, $\sqrt[5]{243} = 3$.

  4. Combine Results: Substitute the values back into the fraction:

    $ \frac{\sqrt[5]{32}}{\sqrt[5]{243}} = \frac{2}{3} $

Therefore, the value of $\sqrt[5]{\frac{32}{243}}$ is $\frac{2}{3}$.

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