1
VITEEE 2024
MCQ (Single Correct Answer)
+1
-0

If the tangent at the point $P$ on the circle $x^2+y^2+2 x+2 y=7$ meets the straight line $3 x-4 y=15$ at the point $Q$ on the $X$-axis, then length of $P Q$ is

A
$3 \sqrt{7}$
B
$4 \sqrt{7}$
C
$2 \sqrt{7}$
D
$\sqrt{7}$
2
VITEEE 2024
MCQ (Single Correct Answer)
+1
-0

Coefficient of $x^3$ in the expansion of $\left(x^2-x+1\right)^{10}\left(x^2+1\right)^{15}$ is equal to

A
$-360$
B
$-240$
C
$-180$
D
$60$
3
VITEEE 2024
MCQ (Single Correct Answer)
+1
-0

Consider the ellipse $\frac{x^2}{\cos ^2 \alpha}+\frac{y^2}{\sin ^2 \alpha}=1$, where $\alpha \in\left(0, \frac{\pi}{4}\right)$. Then, locus of point of intersection of one of the directrix and tangent at upper end of minor axis is

A
$x \sqrt{1-y^2}=\left(1-2 y^2\right)$
B
$x \sqrt{1-2 y^2}=\left(1-y^2\right)^2$
C
$x^2\left(1-y^2\right)=\left(1-2 y^2\right)$
D
$x^2\left(1-2 y^2\right)=\left(1-y^2\right)^2$
4
VITEEE 2024
MCQ (Single Correct Answer)
+1
-0

If $A, B$ are two square matrices, such that $A B=A, B A=B$, then $(A+B)^7$ equals

A
$A+B$
B
$2^7(A+B)$
C
$2^6(A+B)$
D
$2^8(A+B)$
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