Which of the following books is NOT written by Chetan Bhagat?

Wise and Otherwise

The correct answer is Option (3) - Wise and Otherwise

"Wise and Otherwise" is a collection of short stories authored by Sudha Murthy, an Indian author and philanthropist. It is not written by Chetan Bhagat, who is also a popular Indian author known for his novels like "Revolution 2020," "Making India Awesome," and "One Indian Girl." Therefore, "Wise and Otherwise" is not written by Chetan Bhagat.