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Indian Navy 10+2 B.Tech Cadet Determinants — practice questions

2 free MCQs with worked solutions. Tap any question for the answer + explanation, or practice them all in the app.

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For a square matrix $A$ of order $n$, the product $A\,(\text{adj}\,A)$ equals:If $A$ is a $3\times3$ matrix with $|A| = 2$, then $|3A|$ equals: