There are four square nubers... 49, 64, 81 & 100
There are a total of 890 numbers between 110 and 1000 inclusive - 445 of these are odd, and 445 are even.
There are infinitely many numbers on either side of sqrt(110) and these can come as close to 110 as you chose. For example, 10.48 and 10.49. Or better still, 10.488088 and 10.488089. You could keep going. It is not enough to specify that you meant integers rather than numbers. Because, knowing that 100 and 121 are perfect squares, we can say that 100 < 110 < 121 Taking square roots gives -11 < sqrt(110) < -10 or 10 < sqrt(110) < 11 So you should specify "positive integers".
110
210
There are several and one of them is 36.