Question

If n = p, then the order of the matrix 7X – 5Z is: 

(A) p x 2 

(B) 2 x n 

(C) n x 3 

(D) p x n

Answer 1

Answer is (B)

X is of order 2 x n

Z is of order 2 x p

2 x n = 2 x p

given n = p