1
COMEDK 2020
MCQ (Single Correct Answer)
+1
-0

If $$A = \left[ {\matrix{ 1 & { - 2} & 2 \cr 0 & 2 & { - 3} \cr 3 & { - 2} & 4 \cr } } \right]$$, then A . adj (A) is equal to

A
$$\left[ {\matrix{ 5 & 0 & 0 \cr 0 & 5 & 0 \cr 0 & 0 & 5 \cr } } \right]$$
B
$$\left[ {\matrix{ 5 & 1 & 1 \cr 1 & 5 & 1 \cr 1 & 1 & 5 \cr } } \right]$$
C
$$\left[ {\matrix{ 0 & 0 & 0 \cr 0 & 0 & 0 \cr 0 & 0 & 0 \cr } } \right]$$
D
$$\left[ {\matrix{ 8 & 0 & 0 \cr 0 & 8 & 0 \cr 0 & 0 & 8 \cr } } \right]$$
2
COMEDK 2020
MCQ (Single Correct Answer)
+1
-0

The value of $$\left| {\matrix{ x & p & q \cr p & x & q \cr p & q & x \cr } } \right|$$ is

A
$$(x - p)(x - q)(x + p + q)$$
B
$$x(x - p)(x - q)$$
C
$$pq(x - p)(x - q)$$
D
$$(p - q)(x - q)(x - p)$$
COMEDK Subjects
EXAM MAP
Medical
NEET
Graduate Aptitude Test in Engineering
GATE CSEGATE ECEGATE EEGATE MEGATE CEGATE PIGATE IN
Civil Services
UPSC Civil Service
CBSE
Class 12