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JEE MAIN 2020
09-01-20 S1
Question
I the matrices $A=\left[\begin{array}{ccc}1 & 1 & 2 \\ 1 & 3 & 4 \\ 1 & -1 & 3\end{array}\right], B=\operatorname{adj} A$ and $C=$ 3 A , then $\frac{|\operatorname{adjB}|}{|\mathrm{C}|}$ is equal to
Select the correct option:
A
16
B
2
C
72
D
8
✓ Correct! Well done.
✗ Incorrect. Try again or view the solution.
Solution
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JEE Main
Mathematics
Easy
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