27 squared is 729.
They are 324 and 361 which are both square numbers
27
27 and 28 will both meet that criteria.
Really? are you that stupid? Anyway 29 squared = 841
The only integer answer is 31. 31^2 = 961.
Take your choice from: 15 16 17 18 and 19
-- Any number between 30 and 31.6 will do that. -- If you're only looking for a whole number, then 31 is the only one.
The positive integer whose square is between 900 and 1000 is 31. 312 = 961.
500
The smallest integer is 11 but there is no smallest number! 0.11 is a smaller number and will give a perfect square. 0.0011 is smaller still, and 0.000011 even smaller. That sequence is endless!
The squares of 25, 26, -25 and -26 are in that range.
252 = 625 and 262 = 676, both of which are bigger than 600 but smaller than 700. No other integer has this property, but any decimal number between 24.5 and 26.4 also satisfies this condition, if the answers are not restricted to integers.