Question

Find the square root of $1681$ by first principle (vargamula method)

Answer 1

Hint: Vargamula method is a vedic math method to find square roots of the large terms. Here Vargamula means square root.

Complete step-by-step answer:
For finding the square root by vargamulla method, write the given no in place of dividend.
${}_{81}^{4}\left| \!{\overline {\,
 \dfrac{1681}{\dfrac{16\downarrow }{\dfrac{\times 81}{\dfrac{81}{\times }}}} \,}} \right. $
The answer obtained from vargamula method to find square root is $41$
$\sqrt{1681}=41$
Hence option C is correct

Note: We can easily find square roots of numbers 1 with digit any no number of digits.
It is vedic math used to determine the Square root we have.