Question 258682
Start simple.
{{{(matrix(2,2,1,1,1,2))}}}
Find this determinant. 
It's 1.
{{{(matrix(3,3,
1,1,1,
1,2,2,
1,2,3))}}}
Find this determinant. 
It's also 1.
I see a pattern here. 
Good luck!