Teaching BPSC 4.0 बिहार उच्च माध्यमिक शिक्षक भर्ती (PGT) Mock Test Mathematics Matrices Operations on Matrices
Assertion (A): If A = \(\begin{bmatrix}3&1&1\\5&2&3\end{bmatrix}\) and B = \(\begin{bmatrix}2&1&1\\7&2&4\end{bmatrix}\), then 2A + 3B = \(\begin{bmatrix}12&5&5\\31&10&18\end{bmatrix}\)
Reason (R): If A and B are two matrices of same order, then A + B = B + A
1
Both A and R are true and R is the correct explanation of A.
2
Both A and R are true but R is not the correct explanation of A.
3
A is true but R is false.
4
More than one of the above
5
None of the above