1
COMEDK 2024 Evening Shift
MCQ (Single Correct Answer)
+1
-0

$$ \text { The area of the region enclosed by the curve }\left\{(x, y): 4 x^2+25 y^2=100\right\} \text { is } $$

A
$$ \frac{16 \pi}{3} \text { sq units } $$
B
$$9 \pi$$ sq units
C
$$10 \pi$$ sq units
D
$$ \frac{9 \pi}{5} \text { sq units } $$
2
COMEDK 2024 Evening Shift
MCQ (Single Correct Answer)
+1
-0

The mean of five observations is 4 and their variance is 5.2 . If three of these observations are 1, 2 and 6, then the other two observations are

A
4, 7
B
2, 10
C
5, 6
D
2, 9
3
COMEDK 2024 Evening Shift
MCQ (Single Correct Answer)
+1
-0

The line joining two points $$A(2,0) B(3,1)$$ is rotated about $$A$$ in anticlockwise direction through an angle of $$15^{\circ}$$. If $$B$$ goes to $$C$$ in the new position, then the coordinates of $$C$$ is

A
$$ \left(2+\frac{1}{\sqrt{3}}, \sqrt{\frac{3}{2}}\right) $$
B
$$ \left(2, \sqrt{\frac{3}{2}}\right) $$
C
$$ \left(2+\frac{1}{\sqrt{3}}, 1\right) $$
D
$$ \left(2+\frac{1}{\sqrt{2}}, \sqrt{\frac{3}{2}}\right) $$
4
COMEDK 2024 Evening Shift
MCQ (Single Correct Answer)
+1
-0

$$ \text { The value of } \lim _\limits{x \rightarrow 1} \frac{x^{15}-1}{x^{10}-1}= $$

A
$$\frac{2}{3}$$
B
1
C
$$\frac{3}{2}$$
D
Does not exist
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