Question

Q3. The order of the product of matrices matrix 2\\ -1\\ 4 matrix ][ matrix 0\\ 1\\ 5 matrix ]^ r is​

Answer 1

Answer:

cotaination of the sums

⇒n(n+1)=378×2

⇒n(n+1)=756=27×28

⇒n(n+1)=27(27+1)

⇒n=27

Hence, option B.

l hope it will help u ☺️☺️