Question

Please tell me (how to find the order of a matrix).... For example in this question.... Its 17th

Answer 1

Is it ml.agarwal s book

I'm alooking having the same book

Answer 2

The order of a matrix is (rows × columns)

For example, Order of matrix A is 2×2.

We know that, for multiplication of matrices,

The column of the first matrix should be equal to rows of the second matrix.

Refer diagram 1.

The order of the resultant matrix is the rows of 1st matrix and columns of 2nd matrix.

Refer diagram 2.