Let A be a matrix of order 3 × 4. If R1 denotes the first row of A and C2 denotes its second column, then determine the orders of matrices R1 and C2.

Let A be a matrix of order 3×4.

A = [aij]3×4


R1 = first row of A = [a11,a12,a13,a14]


So, order of matrix R1 = 1×4


C2 = second column of A =


Order of C2 = 3×1


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