1
TS EAMCET 2022 (Online) 19th July Morning Shift
MCQ (Single Correct Answer)
+1
-0

In an experiment a person gets success $\alpha$ times out of $\beta$ trails. If the experiment consists of $n$ trials, then the probability that he fails at least $(n-1)$ times is

A

$\frac{\alpha^{n-1}}{\beta^n}(n \beta-n \alpha+\alpha)$

B

$\frac{(\beta-\alpha)^{n-1}}{\beta^n}(n \alpha+\beta-\alpha)$

C

$\frac{\alpha^n}{\beta^n}(n \alpha+\beta)$

D

$\left(\frac{\beta-\alpha}{\beta}\right)^n(n \beta+n \alpha+1)$

2
TS EAMCET 2022 (Online) 19th July Morning Shift
MCQ (Single Correct Answer)
+1
-0

If the distance from a variable point $P$ to a fixed point $A(a, 0)$ is equal to the perpendicular distance from $P$ to the line $x+y=0$, then the equation of the locus of $P$ is

A

$x^2+y^2-2 x y-4 a x=0$

B

$x^2+y^2-2 x y-4 a x+2 a^2=0$

C

$x^2-4 a y+y^2=0$

D

$(x-a)^2+y^2=4 a x y$

3
TS EAMCET 2022 (Online) 19th July Morning Shift
MCQ (Single Correct Answer)
+1
-0

The point to which the origin is to be shifted by translation of axes so that the transformed equation of $y^2+4 y+8 x-2=0$ will not contain $y$ term and constant term is

A

$\left(\frac{3}{4},-2\right)$

B

$\left(\frac{-3}{4},-2\right)$

C

$\left(2, \frac{3}{4}\right)$

D

$\left(-2, \frac{-3}{4}\right)$

4
TS EAMCET 2022 (Online) 19th July Morning Shift
MCQ (Single Correct Answer)
+1
-0

If the line $2 x-y-4=0$ divides the line segment joining the points $(2,-1)$ and $(1,-4)$ at the point $(a, b)$ in the ratio $m: n$, then $4\left(a-b\left(\frac{m}{n}\right)^2\right)=$

A

-5

B

14

C

11

D

10

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