1
KCET 2019
MCQ (Single Correct Answer)
+1
-0

If $$3 A+4 B^{\prime}=\left[\begin{array}{ccc}7 & -10 & 17 \\ 0 & 6 & 31\end{array}\right]$$ and $$2 B+3 A^{\prime}\left[\begin{array}{cc}-1 & 18 \\ 4 & 0 \\ -5 & -7\end{array}\right]$$ then $$B=$$

A
$$\left[\begin{array}{cc}-1 & -18 \\ 4 & -16 \\ -5 & -7\end{array}\right]$$
B
$$\left[\begin{array}{cc}1 & 3 \\ -1 & 1 \\ 2 & 4\end{array}\right]$$
C
$$\left[\begin{array}{cc}1 & 3 \\ -1 & 1 \\ 2 & -4\end{array}\right]$$
D
$$\left[\begin{array}{cc}1 & -3 \\ -1 & 1 \\ 2 & 4\end{array}\right]$$
2
KCET 2019
MCQ (Single Correct Answer)
+1
-0

If $$A=\left[\begin{array}{ll}1 & 3 \\ 4 & 2\end{array}\right], B=\left[\begin{array}{cc}2 & -1 \\ -1 & 2\end{array}\right]$$, Then $$\left|A B B^{\prime}\right|=$$

A
100
B
50
C
250
D
$$-$$250
3
KCET 2019
MCQ (Single Correct Answer)
+1
-0

If the value of a third order determinant is 16, then the value of the determinant formed by replacing each of its elements by its cofactor is

A
256
B
96
C
16
D
48
4
KCET 2019
MCQ (Single Correct Answer)
+1
-0

The constant term in the expansion of $$\left|\begin{array}{ccc}3 x+1 & 2 x-1 & x+2 \\ 5 x-1 & 3 x+2 & x+1 \\ 7 x-2 & 3 x+1 & 4 x-1\end{array}\right|$$ is

A
$$-$$10
B
0
C
6
D
2
KCET Subjects
EXAM MAP