1
COMEDK 2026 Morning Shift
MCQ (Single Correct Answer)
+1
-0

Given the matrices $A=\left[\begin{array}{lll}1 & 0 & 1 \\ 0 & 1 & 0 \\ 1 & 0 & 2\end{array}\right]$ and $B=\left[\begin{array}{lll}2 & 1 & 0 \\ 1 & 1 & 2 \\ 0 & 2 & 1\end{array}\right]$, then the minor $\boldsymbol{M}_{\mathbf{2 3}}$ of the matrix $\left(A B^{-1}\right)^{-1}$ is:

A

2

B

9

C

4

D

-9

2
COMEDK 2026 Morning Shift
MCQ (Single Correct Answer)
+1
-0

The order and degree of the differential equation $\left(\frac{d y}{d x}\right)^2+\frac{d x}{d y}=x$ is:

A

$(1,1)$

B

$(1,2)$

C

$(2,1)$

D

$(1,3)$

3
COMEDK 2026 Morning Shift
MCQ (Single Correct Answer)
+1
-0

A teacher has two jars of candy on her desk:

Jar 1: Contains 3 Strawberry candies and 2 Orange candies.

Jar 2: Contains 1 Strawberry candy and 4 Orange candies.

The teacher randomly picks two candies from Jar 1 and drops them into Jar 2.

Then, a student reaches into Jar 2 and picks two candies.

What is the probability that the student picks two Strawberry candies?

A

$\frac{6}{35}$

B

$\frac{4}{21}$

C

$\frac{3}{70}$

D

$\frac{1}{14}$

4
COMEDK 2026 Morning Shift
MCQ (Single Correct Answer)
+1
-0

$$ \text { The direction ratios of the vector }(\hat{\imath}+\hat{\jmath}) \times(\hat{\jmath}+\hat{k}) \text { are } $$

A

$$ 1,0,1 $$

B

$$ 1,-1,1 $$

C

$$ 1,1,-1 $$

D

$$ 0,1,0 $$