So I've been trying a problem and I have reduced it to showing that the determinant of some binary matrix (the matrix filled with entries $0$ and $1$) is not equal to zero. I don't really know linear algebra so any help would be appreciated!
Also, in the problem that I am working on only has at-most two entries common in each row and there is atleast $3$ non zero entries in each row. That is, one row has atmost two entries in common in each rows. Also note that the order of matrix $\geq4.$