Answer :

Given matrix orders

[A] with 3 x 4 and [B] with 4 x 3

We have to find the order of [B].[A]

For matrix multiplication the columns of 1^{st} matrix and the rows of 2^{nd} matrix should be equal.

E.g. [A]_{3x2}.[B]_{2x2}

The order of new matrix formed after multiplication of matrices will be 1^{st} matrix row will be taken as new matrix rows. The no. of columns in 2^{nd} matrix will be taken as new matrix columns.

E.g. [A]_{3x2}.[B]_{2x2} = [AB]_{3x2}

In the same way [B]_{4x3}.[A]_{3x4} = [AB]_{4x4}

∴ option (B) is correct answer

Rate this question :

If A = <img widthTamil Nadu Board - Math

If A = <img widthTamil Nadu Board - Math

<img width="233" Tamil Nadu Board - Math

If <img width="16Tamil Nadu Board - Math

If <img width="15Tamil Nadu Board - Math

If <img width="15Tamil Nadu Board - Math

If <img width="17Tamil Nadu Board - Math

Solve <img width=Tamil Nadu Board - Math

If ATamil Nadu Board - Math

If <img width="30Tamil Nadu Board - Math