Question

what is the product of the second row , fourth column?

Answer 1

1,0, 0,0

Answer 2

all of them?

Answer 3

Yeah but I'm not sure if you have to type all of these 0s, if you look at it, just multiply 1,0 (your 2nd row) with 1,0 (your 4th column) and when you multiply it all out, you get the answer mentioned above.

So 1*1=1
1*0=0
0*1=0
0*0=1