If A and B are two matrices of order 3 × m and 3 × n respectively and m = n, then the order of 5A – 2B is

Question

Philoid · Accepted Answer

m = n

If A and B are two matrices of order 3 × m and 3 × n respectively and m = n

Then, A & B have same orders as 3 × n each,

So the order of (5A – 2B) should be same as 3 × n.

Option (D) is the answer.