Answer :
Actually, the matrix is
8 7 42 0 5
and it has 2 rows and 3 columns.
Inm12 typing m12, you actually meant m12
And the answer is 7.
8 7 42 0 5
and it has 2 rows and 3 columns.
Inm12 typing m12, you actually meant m12
And the answer is 7.