1
TS EAMCET 2022 (Online) 18th July Evening Shift
MCQ (Single Correct Answer)
+1
-0

In a random experiment of throwing 5 coins, the number of heads is defined as a random variable. The mean of the random variable is

A

$\frac{2}{3}$

B

$\frac{3}{2}$

C

$\frac{7}{9}$

D

$\frac{5}{2}$

2
TS EAMCET 2022 (Online) 18th July Evening Shift
MCQ (Single Correct Answer)
+1
-0

The variance of a Poisson variate $X$ is 2 . Then, $P(X \geq 3)=$

A

$\frac{e^2-7}{e^2}$

B

$\frac{e^2-3}{e^2}$

C

$\frac{e^2-5}{e^2}$

D

$1-\frac{4}{e^2}$

3
TS EAMCET 2022 (Online) 18th July Evening Shift
MCQ (Single Correct Answer)
+1
-0

If the perimeter of a triangle is 20 and two of its vertices are $(-5,0)$ and $(6,0)$, then the locus of the third vertex is

A

$40 x^2-81 y^2-40 x-800=0$

B

$40 x^2+9 y^2-25 x+800=0$

C

$40 x^2-9 y^2=800$

D

$5 x^2-3 y^2+3 x-4 y+25=0$

4
TS EAMCET 2022 (Online) 18th July Evening Shift
MCQ (Single Correct Answer)
+1
-0

The transformed equation of $3 X^2+4 X Y+Y^2-8 X-4 Y-4=0$ is $f(X, Y)=a X^2+2 h X Y+b Y^2+c=0$ when the origin is shifted to a new point by the translation of axes. Then, $f(1,1)=$

A

0

B

1

C

-1

D

-8

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