31. A man sells an object for Rs 960 and earns a profit that is three times the loss incurred when the object is sold for Rs 480. If he sells it at a profit of 25%, find the selling price of this object.

32. If 8 years are subtracted from the present age of Amit and the remainder is divided by 10, the present age of Rohan is obtained. If Rohan is 3 years younger than Sam, whose age is 12 years, then what is Amit's present age?

33. If an amount increases by 80% in 4 years at simple interest, what will be the compound interest of Rs. 8000 compounded annually, after 3 years at the same rate?

34. A bus travels 25% faster than a car. Both start moving at the same time from station P and reach station Q at the same time. The stations are 140 km apart. If on the way the bus stops at the bus stop for 1 hour, find the speed of the car.

35. What is the primary disadvantage of a deep instruction fetch buffer in a CPU?

36. Which of the following synchronization mechanisms is most suitable for ensuring consistency of a shared resource across multiple servers in a cloud environment?

37. What is the output of the following code snippet?

#include

using namespace std;

class X {

public:

virtual void show() {

cout << "X" << endl;

}

};

class Y : public X {

public:

void show() {

cout << "Y" << endl;

}

};

int main() {

X *ptr = new Y();

ptr->show();

return 0;

}

38. Find out the efficiency of the following Python code in terms of Big-O notation:

python

for j in range(m):

if j % 3 == 0:

print(j // 3)

else:

print(j ** 3)

39. python

class DemoContextManager:

def enter(self):

print("Starting context")

def __exit__(self, exc_type, exc_value, traceback):<br>
    print("Ending context")<br>
    return True  # Suppress any exceptions<br>

def sample_generator():

with DemoContextManager():

yield 10

yield 20

for num in sample_generator():

print(num)

if num == 10:

raise RuntimeError("Sample Error")

40. #include

class Animal {

public:

Animal() { std::cout << "Animal Constructor" << std::endl; }

virtual ~Animal() { std::cout << "Animal Destructor" << std::endl; }

};

class Dog : public Animal {

public:

Dog() { std::cout << "Dog Constructor" << std::endl; }

~Dog() { std::cout << "Dog Destructor" << std::endl; }

};

int main() {

Animal* pet = new Dog();

delete pet;

return 0;

}

41. Which of the following is not a characteristic of the CISC (Complex Instruction Set Computing) architecture?

42. #pragma pack(2)

struct test_struct {

short x;

double y;

char z;

};

What is the size of struct test_struct?

43. Which of the following is an internal sorting algorithm?

44. Which of the following determines the width of a processor's instructions?

45. What will be the output of the following Python code?

class Meta(type):

def new(cls, name, bases, dct):

x = super().new(cls, name, bases, dct)

x.attr = 200

return x

class MyClass(metaclass=Meta):

pass

print(MyClass.attr)