Question

If A is a matrix of order 3 × 4 and B is a matrix of order 4 × 3, find the order of the matrix of AB. 

Answer 1

If A is a matrix of order 3 × 4 and B is a matrix of order 4 × 3, then the order of matrix AB   is given by the number of rows in A and number of columns in B, respectively.

Thus, the order of matrix AB is

\[3 \times 3\].