Accenture Placement Preparation

What is the time complexity of binary search?

• O(n log n)

• O(1)

• O(n)

• O(log n)

Explain the concept of polymorphism in OOP.

• Polymorphism allows methods to do different things based on the object it is acting upon, enabling flexibility and reusability in code.

• Polymorphism is a method of data encryption in programming.

• Polymorphism restricts methods to a single behavior for all objects.

• Polymorphism is a technique for managing memory allocation in OOP.

What is the difference between a stack and a queue?

• A stack can hold only one item at a time, while a queue can hold multiple items.

• Both stack and queue use LIFO.

• A stack uses FIFO, while a queue uses LIFO.

• A stack uses LIFO, while a queue uses FIFO.

If a train travels 60 miles in 1 hour, how far will it travel in 2.5 hours?

• 120 miles

• 180 miles

• 200 miles

• 150 miles

A car's fuel efficiency is 25 miles per gallon. How many gallons are needed to travel 100 miles?

• 6 gallons

• 2 gallons

• 4 gallons

• 10 gallons

If the sum of two numbers is 30 and one number is 12, what is the other number?

• 18

• 15

• 20

• 25

What is the output of the following code: print(2**3 + 3**2)?

• 15

• 18

• 17

• 16

If a rectangle has a length of 10 cm and a width of 5 cm, what is its area?

• 40 cm²

• 50 cm²

• 15 cm²

• 30 cm²

What is the probability of rolling a sum of 7 with two dice?

• 1/4

• 1/8

• 1/12

• 1/6

If a person invests $1000 at an interest rate of 5% per year, how much will they have after 3 years?

• $1200.00

• $1157.63

• $1100.50

• $1050.00