1
KCET 2025
MCQ (Single Correct Answer)
+1
-0
If $A$ is a square matrix of order $3 \times 3, \operatorname{det} A=3$, then the value of $\operatorname{det}\left(3 A^{-1}\right)$ is
A
$\frac{1}{3}$
B
3
C
27
D
9
2
KCET 2025
MCQ (Single Correct Answer)
+1
-0
If $B=\left[\begin{array}{ll}1 & 3 \\ 1 & \alpha\end{array}\right]$ be the adjoint of a matrix $A$ and $|A|=2$, then the value of $\alpha$ is
A
4
B
5
C
2
D
3
3
KCET 2024
MCQ (Single Correct Answer)
+1
-0

If $A$ is a square matrix, such that $A^2=A$, then $(I+A)^3$ is equal to

A
$A-I$
B
$7 A$
C
$7 A+I$
D
$I-7 A$
4
KCET 2024
MCQ (Single Correct Answer)
+1
-0

If $A=\left(\begin{array}{ll}1 & 1 \\ 1 & 1\end{array}\right)$, then $A^{10}$ is equal to

A
$2^8 A$
B
$2^9 \mathrm{~A}$
C
$2^{10} A$
D
$2^{11} A$
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