The Koothrappali Theory Trivia Quiz

Answer: Particle astrophysics

We don't know how long he has held this job. In "The Pirate Solution" he is almost fired from his job after six months of failed research on the composition of Trans-Neptunian objects. If he lost his job he would have been deported back to India because he is in America on a work visa.

He is very reluctant to go back to India. He says his work hours were spent "mostly checking e-mail and messing up Wikipedia entries". Eventually, he gets a job working with Sheldon.

Answer: New Delhi

We learn this, for example, in the episode "The Jiminy Conjecture", where Caltech's entomologist refers to Raj as being from Bangalore, he replies, "I'm from New Delhi!" Despite this, he dislikes Indian food, and Sheldon often claims he knows more about Indian culture and Hinduism than Raj does.

Answer: Selective mutism

Beverly Hofstadter, Leonard's mother, suggests that he has it. This means he cannot talk to women unless he is in a crowd, is drunk (or thinks he is drunk), or feels he is not speaking directly to them. This does not apply to his family. After acting like a jerk in front of Penny during "The Griffin Equivalency" he tries to apologize to her with a note, but Penny will not accept a note.

He manages to blurt out a soft "Sorry" to her.

Answer: Kunal Nayyar

Nayyar was born in London, England on April 30th, 1981. New Delhi, India is where he was raised. Portraying Raj is what he is best known for. He also played Youssef Zidan, an Iraqi terrorist, in the NCIS episode "Suspicion".

Answer: Video chat

Dr. Koothrappali is played by Brian George and Mrs. Koothrappali is played by Alice Amter. Whenever he video chats with them they try to arrange dates for him. They want a daughter-in-law of Indian descent, and they want grandchildren.

Answer: Gynaecologist

He was rich growing up, and his family had servants. His dad drives a Bentley. In one episode he claims that the movie "Slumdog Millionaire" is loosely based on his life.

Answer: Priya

Priya is played by Aarti Mann. She first appears in the sixth episode of season four, "The Irish Pub Formulation." In the episode, Leonard tries to hide that he and Priya had sex, because of the fact that he pinky-swore with Howard that they wouldn't, for Raj's sake.

Sheldon discovers Leonard's encounter with Priya, and comes up with a lie to fool Howard and Raj, but Leonard cracks. Then all of the guys start confessing things to each other. During her second appearance, ten episodes later in "The Cohabitation Formulation", Priya and Leonard decide to start dating, even though Raj forbids it.

Answer: Penny

They both get drunk and sleep together in Leonard's bedroom. Raj still can't talk to Penny afterwards. They try to get out of the apartment, but Leonard, Howard, and Sheldon catch them.

Answer: Penny's Halloween party

Penny's Halloween party takes place during "The Middle Earth Paradigm", the sixth episode of season one. The girl's name is Cheryl (in the credits) and she works with Penny at The Cheesecake Factory. The actress Erin Allin O'Reily played her. Cheryl goes up to Raj at the party and says, "How wasted am I?" but Raj doesn't answer because he can't talk to women while sober.

In the final scene, Raj and Cheryl are seen in bed after having sex. Cheryl says that he is a good listener.

Answer: Hinduism

He eats beef, which Hindus are not supposed to. Hinduism is the most common religion in India, where Raj was born. Sheldon often disputes Raj's knowledge of Indian culture.