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Find the least $6$ digit which is a perfect square.
To do: To find the least $6$ digit which is a perfect square.
Solution:
As known know that the least $6$ digit number is $100000$
$\Rightarrow \sqrt{100000} = 316.227766$
$100000$ is not a perfect square. to find the required answer, we need to take the next number of $316.227766$ and that is $317$.
Square of $317=317\times 317=100489$
Therefore, $100489$ is least $6$ digit number which is a perfect square.
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