Q. 85.0( 1 Vote )

If , then the order of A is
A. 2 × 1

B. 2 × 2

C. 1 × 2

D. 3 × 2

Answer :

Given,


A x


Let us consider as matrix B, it has an order of 2x2


Let us consider the resultant matrix as C, it has an order of 1x2


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


So, matrix A has got same Columns as Rows of matrix B


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


So, matrix A has got same Rows as Rows of matrix C


So, Matrix A will consists of 1x2 order


option (C) is correct answer

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