1
AP EAPCET 2025 - 21st May Evening Shift
MCQ (Single Correct Answer)
+1
-0

If $a x^2+b x+c<0 \forall x \in R$ and the expressions $c x^2+a x+b$ and $a x^2+b x+c$ have their extreme values at the same point $x$, then for the expression $c x^2+a x+b$

A

Minimum value $=\frac{4 b}{3}$

B

Maximum value $=\frac{4 a}{3}$

C

Minimum value $=\frac{3 a}{4}$

D

Maximum value $=\frac{3 b}{4}$

2
AP EAPCET 2025 - 21st May Evening Shift
MCQ (Single Correct Answer)
+1
-0

If $a \pm i b$ and $b \pm a i$ are the roots of $x^4-10 x^3+50 x^2-130 x+169=0$, then $\frac{a}{b}+\frac{b}{a}=$

A

$\frac{25}{12}$

B

$\frac{5}{2}$

C

$\frac{13}{6}$

D

$\frac{34}{15}$

3
AP EAPCET 2025 - 21st May Evening Shift
MCQ (Single Correct Answer)
+1
-0

If $x^2-5 x+6$ is a factor of $f(x)=x^4-17 x^3+k x^2-247 x+210$, then the other quadratic factor of $f(x)$ is

A

$x^2+12 x+35$

B

$x^2-12 x+35$

C

$x^2-6 x+35$

D

$x^2+6 x+35$

4
AP EAPCET 2025 - 21st May Evening Shift
MCQ (Single Correct Answer)
+1
-0

If all the letters of the word COMBINATION are arranged in all possible ways to form 11 letter words (with or without meaning), then the number of words among them in which $C$ and $N$ occupy the end positions and no vowel appears exactly in the middle position is

A

$\frac{5}{2}(8!)$

B

4 (8!)

C

$2(8!)$

D

36 (7!)