- Assertion (A): Bats can fly in the night. This is true because bats are nocturnal creatures and are adapted to fly in low light conditions.
- Reason (R): Bats emit ultrasonics. This is true because bats use echolocation, which involves emitting ultrasonic sounds to navigate and catch prey at night.
Since both statements are true and the reason explains the assertion, the correct answer is (A).
The value of $ \frac{1}{1 + p^{(y-z)} + p^{(x-z)}} + \frac{1}{1 + p^{(x-y)} + p^{(z-y)}} + \frac{1}{1 + p^{(y-x)} + p^{(z-x)}}, $ is:
Simplify the following expression: $ \frac{2^{n+5} - 4 \cdot 2^{n}}{2 \cdot (2^{n+4})} $.