1
VITEEE 2024
MCQ (Single Correct Answer)
+1
-0

Given, $\frac{x^2+y^2}{x^2-y^2}+\frac{x^2-y^2}{x^2+y^2}=k$, then $\frac{x^8+y^8}{x^8-y^8}$ is equal to

A
$\frac{k^2+1}{k^2-1}$
B
$\frac{k^2+4}{k^2-4}$
C
$\frac{k^2+4}{4 k}$
D
$\frac{k^2+8}{8 k}$
2
VITEEE 2024
MCQ (Single Correct Answer)
+1
-0

$\log \left(\log _{a b} a+\frac{1}{\log _b a b}\right)$ is $($ where $a b \neq 1)$

A
0
B
1
C
$\log _a a b$
D
$\log _b a b$
3
VITEEE 2024
MCQ (Single Correct Answer)
+1
-0

If two different circles $x^2+y^2+2 a x+2 b y+1$ $=0$ and $x^2+y^2+2 b x+2 a y+1=0$ touches each other, then $(a+b)^2$ is equal to

A
1
B
2
C
3
D
4
4
VITEEE 2024
MCQ (Single Correct Answer)
+1
-0

6 couples decided to form a committee of four members, the number of different committees that can be formed in which no couple finds place is

A
240
B
20
C
16
D
360
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