1
TG EAPCET 2025 (Online) 4th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

In a shelf there are three mathematics and two physics books. A student takes a book randomly. If he randomly takes, successively for three time by replacing the book already taken every time, then the mean of the number of mathematics books which is treated as random variable is

A

$\frac{3}{2}$

B

$\frac{129}{125}$

C

$\frac{9}{5}$

D

$\frac{174}{125}$

2
TG EAPCET 2025 (Online) 4th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

In possion distribution, if $\frac{P(x=5)}{P(X=2)}=\frac{1}{7500}$ and $\frac{P(X=5)}{P(X=3)}=\frac{1}{500}$, then the mean of the distribution is

A

$\frac{1}{15}$

B

$\frac{1}{5}$

C

$\frac{1}{25}$

D

$\frac{1}{3}$

3
TG EAPCET 2025 (Online) 4th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

$A(2,0), B(0,2), C(-2,0)$ are three points. Let $a, b, c$ be the perpendicular distances from a variable point $P$ on to the lines $A B, B C$ and $C A$ respectively. If $a, b, c$ are in arithmetic progression, then the locus of $P$ is

A

$|\sqrt{2} y|=2|x-y+2|-|x+y-2|$

B

$\sqrt{2}|y|=|x-y+2|-|x+y-2|$

C

$2|x-y+2|=\left|\frac{x+y-2}{\sqrt{2}}\right|+\left|\frac{x-y-2}{\sqrt{2}}\right|$

D

$2|x-y+2|=|x+(\sqrt{2}+1) y+2|$

4
TG EAPCET 2025 (Online) 4th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

When the coordinate axes are rotated about the origin through an angle $\frac{\pi}{4}$ in the positive direction, the equation $a x^2+2 h x y+b y^2=c$ is transformed to $25 x^2+9 y^2=225$, then $(a+2 h+b-\sqrt{c})^2=$

A

3

B

1225

C

9

D

225

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