1
KCET 2026
MCQ (Single Correct Answer)
+1
-0
If $A = \{1, 2, 3, 4, \ldots, 10\}$, then the number of non-empty subsets of A containing only even number is
A
$31$
B
$32$
C
$30$
D
$29$
2
KCET 2026
MCQ (Single Correct Answer)
+1
-0
If $A = \{a, b, c, d, e, f\}$, then the number of subsets of A which contains at least $2$ elements is
A
$64$
B
$65$
C
$57$
D
$59$
3
KCET 2026
MCQ (Single Correct Answer)
+1
-0
If A and B are invertible matrices of same order, then which of the following is not correct?
A
$A \cdot (\text{adj}A) = (\text{adj}A) \cdot A = A I$
B
$A \cdot (\text{adj}A) = (\text{adj}A) \cdot A = |A |I$
C
$(AB)^{-1} = B^{-1} A^{-1}$
D
$|A| \neq 0, |B| \neq 0$
4
KCET 2026
MCQ (Single Correct Answer)
+1
-0
Let X be a matrix of order $2 \times n$ and Z be a matrix of order $2 \times p$. If $n = p$, then the order of the matrix $8X - 9Z$ is:
A
$2 \times n$
B
$p \times 2$
C
$n \times 3$
D
$p \times n$