What number must replace the question mark?

Question

Complete the square with the numbers 1 to 5 so that no row, column or diagonal line of any length contains the same number more than once.
What number must replace the question mark?

Answer 1

5(ANSWER)

3 | 5 | 1 | 4 | 2 |
1 | 4 | 2 | 3 | 5 |
2 | 3 | 5 | 1 | 4 |
5 | 1 | 4 | 2 | 3 |
4 | 2 | 3 | 5 | 1 |