4097
(4097 = (43)2 + 1)
26
123
Every square of a 4 digit number has more than four digits.
87 is the only 2-digit number that is 6 greater and 13 less than a square, but it is not prime.
There is no number that has more than two square roots.By definition, the "square" bit implies two.Every number has exactly:TWO square roots,THREE cube roots,FOUR quadratic roots,etc.
26
123
3cubed is 27, 5 squared is 25. Answer is 26
Every square of a 4 digit number has more than four digits.
123 is two less than 53 = 125 and two more than 112 = 121
87 is the only 2-digit number that is 6 greater and 13 less than a square, but it is not prime.
26
There is no number that has more than two square roots.By definition, the "square" bit implies two.Every number has exactly:TWO square roots,THREE cube roots,FOUR quadratic roots,etc.
225its 256, d square root being 16 which is 3 more dan d sum of d digits !!!
A cube has 12 edges, a square pyramid has 8. So a cube.
It could be any one of them: 3: A 1-digit perfect square - 1 which is not a perfect cube. 7: A perfect cube - 1 8: A 1-digit perfect square - 1 which is also a perfect cube. 15: A perfect 4th power - 1 30: More than 1 away from a perfect power.
12311 ^ 2 = 121; 121 + 2 = 1235^3 = 125; 125 - 2 = 123