CUET Preparation Today
If A and B are two matrices of order 3 × p and 3 ×q respectively, and p=q, then the order of (2A-5B) is : |
3×q p×q 3 × 3 p × 3 |
3×q |
The correct answer is option (1) → $3×q$ for $3 × q$, $3 ×p$ if $p=q$ $⇒3 × q=3 ×p$ so order (2A - 5B) = order (A) = order (B) $=3 × q=3 ×p$ |
