CUET · MATHS · PYQ PAPER 2023
If \(A\) is a square matrix of order 3 and \(|A|=5\), then \([\operatorname{Adj} A] A\) is____________.
- A \(3 I\)
- B \(I\)
- C \(5I\)
- D 1\(5I\)
Answer & Solution
Correct Answer
(C) \(5I\)
Step-by-step Solution
Detailed explanation
\((\operatorname{Adj} A) A = |A| I\) \((\operatorname{Adj} A) A = 5 I\)
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