Now change matrix b to a 3 x 3 matrix and enter these values for b:
b =
1.2 1.4 3.1
2.2 1.1 5.6
3.7 4.2 6.7
then select a • b to calculate the product:
77 39 −33
1.2 1.4 3.1
2.2 1.1 5.6
3.7 4.2 6.7
=
c11 c12 c13
c11 =
c12 =
c13 =

The first one, i believe, would be correct. all the others have one thing in common, and that's that they have repeating numbers. in the second one, x and y have repeating 6's and 3's, and in the third, x and y have repeating 6's as well. in the last one, there are repeating 3's. the first one has no repeating numbers.

Iam confused on this my self

The answer would be 366%