Question

1. If matrix - is of order 3 × 4, then the each row of matrix A contains elements:

(A) 4 (B) 12 (C) 3 (D) 7​

Answer 1

The correct option is A) 4

Step-by-step explanation:

• The order of a matrix is defined as n = a x b, where "a" is the number of rows and "b" is the number of columns

• Here the order of matrix is 3 x 4, which means that there are 3 rows and 4 columns

• If we represent this matrix, it will be of the form

             1 2 3 4

             5 6 7 8

             4 3 2 1

• This shows that each row has 4 elements in it.

• Total number of elements being 12

Learn more about order of matrix from the link below

https://brainly.in/question/6423847

Answer 2

Answer:12

Step-by-step explanation: Because this is multiplication of matrix so I can right thiAxB 3x4=12