Solution
Expression = $$\frac{1}{9}:\frac{1}{81},\frac{1}{13}:?$$
The pattern followed is = $$\frac{1}{n}:\frac{1}{n^2}$$
Eg = $$\frac{1}{9}=\frac{1}{9^2}=\frac{1}{9}:\frac{1}{81}$$
Similarly, $$\frac{1}{13^2}=\frac{1}{169}$$
=> Ans - (A)
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