Find the greatest number of five digits which is a perfect square. What is the square root of this number?
We know that,
Greatest five digit number = 99999
Now, by using long division method we get:
From above results it is clear that:
316 < 
< 317
Therefore,
(316)2 = 99856
Hence, 99856 is the least four digit perfect square number having square root 316
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