Value of the given determinant is 
Expanding along the first row:

\[ = 1(6\cdot 2 - 0\cdot 4) - 3(2\cdot 2 - 4(-1)) \] \[ = 12 - 3(4 + 4) = 12 - 3(8) = 12 - 24 = -12 \]
Among the following, the matrices with non-zero determinant are 
Among the following, the matrices with non-zero determinant are 