Mathematics · 2015
JEE Main · 11 April 2015, Shift 1 · Q64
If A is a 3 × 3 matrix such that |5. adjA |=5, then | A | is equal to:
If A is a $\displaystyle 3 \times 3$ matrix such that $\displaystyle |5 . \operatorname{adjA}|=5$, then $\displaystyle |\mathrm{A}|$ is equal to :
Official answer
(1)
$\displaystyle \pm \frac{1}{5}$
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JEE Main 2015 Mathematics question, with the answer from NTA’s final answer key. Where our answers come from.