1
AP EAPCET 2025 - 22nd May Evening Shift
MCQ (Single Correct Answer)
+1
-0

$f(x)$ is a quadratic polynomial satisfying the condition $f(x)+f\left(\frac{1}{x}\right)=f(x) f\left(\frac{1}{x}\right)$. If $f(-1)=0$, then the range of $f$ is

A

$[1, \infty)$

B

$[-1,1]$

C

$(-\infty, 1]$

D

$R$

2
AP EAPCET 2025 - 22nd May Evening Shift
MCQ (Single Correct Answer)
+1
-0

$$ \sum\limits_{k=1}^n k(k+1)(k+2) \ldots(k+r-1)= $$

A

$\frac{n(n+1)(n+2) \ldots(n+r)}{r+1}$

B

$\frac{n(n+1)(n+2) \ldots(n+r-1)}{r}$

C

$\frac{n(n+1)(n+2) \ldots(n+r+1)}{r+1}$

D

$\frac{n(n+1)(n+2) \cdot \cdot 2 n}{2 n+1}$

3
AP EAPCET 2025 - 22nd May Evening Shift
MCQ (Single Correct Answer)
+1
-0

If $A=\left[\begin{array}{lll}1 & 2 & 3 \\ 1 & 3 & 5 \\ 2 & 1 & 6\end{array}\right]$ and $|\operatorname{adj}(\operatorname{adj} A)|(\operatorname{adj} A)^{-1}=k A$, then $k=$

A

1296

B

216

C

36

D

432

4
AP EAPCET 2025 - 22nd May Evening Shift
MCQ (Single Correct Answer)
+1
-0

If the values $x=\alpha, y=\beta, z=\gamma$ satisfy all the 3 equations $x+2 y+3 z=4,3 x+y+z=3$ and $x+3 y+3 z=2$, then $3 \alpha+\gamma=$

A

$\beta$

B

$2 \beta$

C

$1-2 \beta$

D

$2 \beta+1$