1
VITEEE 2022
MCQ (Single Correct Answer)
+1
-0

If the 2nd, 3rd and 4th terms in the expansion of $$(a+b)^n$$ be $$240,720$$ and 1080 respectively, then the value of $$(n, b, a)$$ is

A
$$(5,2,3)$$
B
$$(2,3,5)$$
C
$$(3,5,2)$$
D
$$(5,3,2)$$
2
VITEEE 2022
MCQ (Single Correct Answer)
+1
-0

If $$0< a<5,0< b<5$$ and $$\frac{x^2+5}{2}=x-2[\cos (a+b x)]$$ is satisfied for atleast one real $$x$$, then the least value of $$\frac{a+b}{\pi}$$ is equal to

A
4
B
3
C
2
D
1
3
VITEEE 2022
MCQ (Single Correct Answer)
+1
-0

The condition in order that $$Z_1, Z_2, Z_3$$ are vertices of an isosceles triangle right angled at $$z_2$$, is

A
$$\left(Z_1-Z_3\right)^2=3\left(Z_1-Z_2\right)\left(Z_2-Z_3\right)$$
B
$$\left(Z_1-Z_3\right)^2=3\left(Z_2-Z_1\right)\left(Z_2-Z_3\right)$$
C
$$\left(Z_1-Z_3\right)^2=2\left(Z_1-Z_2\right)\left(Z_2-Z_3\right)$$
D
$$\left(Z_1-Z_3\right)^2=2\left(Z_2-Z_1\right)\left(Z_2-Z_3\right)$$
4
VITEEE 2022
MCQ (Single Correct Answer)
+1
-0

If the tangent at point $$P$$ on the circle $$x^2+y^2+6 x+6 y-2=0$$ meets the straight line $$5 x-2 y+6=0$$ at a point $$Q$$ on $$Y$$-axis, the length of $$P Q$$ is

A
4
B
$$2 \sqrt{5}$$
C
5
D
$$3 \sqrt{5}$$
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