Suggest a tricky method for this problem Find the value of:
$$ 1+ \biggl(\frac{1}{10}\biggr)^2 + \frac{1 \cdot 3}{1 \cdot 2} \biggl(\frac{1}{10}\biggr)^4 + \frac{1\cdot 3 \cdot 5}{1 \cdot 2 \cdot 3} \biggl(\frac{1}{10}\biggr)^6 + \cdots  $$


Hint: What is the generalized binomial expansion of $\left( 1-2 \times
 \left(\frac{1}{10}\right)^2 \right) ^{-\frac{1}{2}}$?

