If x is the square of the number when left( frac...

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If x is the square of the number when $$\left( {\frac{2}{5}{\text{ of }}6\frac{1}{4} \div \frac{3}{7}} \right)$$ of $$1\frac{2}{7}$$ is divided by $$11\frac{1}{4},$$ then the value of 81x is:

A. 36

B. 16

C. 9

D. 4

Answer: Option A

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