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

Let the population of a species of birds surviving at a time ' $\boldsymbol{t}$ ' be governed by the differential equation $\frac{d p}{d t}-p=-100$. If $p(0)=50$, then $p\left(-\log _e 2\right)$ is equal to

A

100

B

90

C

75

D

40

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

A coffee roaster has $\mathbf{1 2}$ rare coffee beans with intensity scores ranked from $\mathbf{1}$ (mildest) to $\mathbf{1 2}$ (strongest).

You choose 7 beans at random and line them up from mildest to strongest:

$$ C_1< C_2< C_3< C_4< C_5< C_6< C_7 $$

What is the probability that the third bean $\left(C_3\right)$ has an intensity score of exactly 4 ?

A

$\frac{1}{4}$

B

$\frac{21}{44}$

C

$\frac{5}{18}$

D

$\frac{35}{132}$

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

A coach needs to select a $\mathbf{4}$-player starting lineup from a pool of $\mathbf{1 0}$ players:

  • 5 guards

  • 3 forwards

  • 2 centres

Find the number of different selections if the 4-player starting lineup must include:

  • At least 1 guard

  • At most 1 forward

  • Exactly 1 centre

A

60

B

20

C

70

D

80

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

$$ \text { The domain of the function } f(x)=\sin ^{-1}(\sqrt{x-1}) $$

A

$$ (-\infty, 1] \cup[2, \infty) $$

B

$$ [-1,1] $$

C

$$ [1,2] $$

D

$$ [0,1] $$