1, 4, 9, 16, 25, 36, 49
The difference between 36 and 49 is 13.
Hopefully, I answered your question!
(Wow, you asked this 9 years ago).
There are 2*13 = 26 natural numbers between them.
9 13
The numbers are 7 and 6
They are: 100-64 = 36
15
The sum, or difference, of two irrational numbers can be rational, or irrational. For example, if A = square root of 2 and B = square root of 3, both the sum and difference are irrational. If A = (1 + square root of 2), and B = square root of 2, then, while both are irrational, the difference (equal to 1) is rational.
9 and 13
32 and 19
9 + 13 = 22
The two square numbers which add up to 13 are 9 (which is equal to 3 squared), and 4 (which is equal to 2 squared).
6 and 7. They are (13-1)/2 and (13+1)/2
The question has no answer in real numbers. The solution, in complex numbers, are 2+3i and 2-3i where i is the imaginary square root of -1.