21 insanely difficult Harry Potter trivia questions even die-hard fans have trouble with

Test your knowledge of the Harry Potter series with our set of impossibly difficult trivia questions

Daniel Radcliffe as Harry Potter
Daniel Radcliffe as Harry Potter

Do you consider yourself to be an expert on all things “Harry Potter”? There are many internet hubs perfect for putting that knowledge to the test, from discussions on the /r/harrypotter to user-submitted quizzes on Goodreads.

In order to track down the toughest “Harry Potter” trivia questions, we put our own memory to the test on Scholastic's “Wizard's Challenge” — an online quiz with a wide range of difficulty.

Combining expert-level questions found there along with some doozies asked during a New York City trivia night, we've compiled a list sure to challenge the average “Harry Potter” fan.

Scroll down to test your wizardry. The questions are above the photos, and the answers are below the photos.

Many know that Gryffindor's ghost is Nearly Headless Nick. But what is his full name?

Answer: Sir Nicholas de Mimsy-Porpington.

Harry, Ron, and Hermione help save the Sorcerer's Stone from being stolen. How old was its co-creator, Nicholas Flamel, when he decided to destroy it?

Answer: 665.

Snape grilled Harry about this on his first day in Potions. Monkshood and wolfsbane are the same plant, also known as what?

Answer: Aconite.

New students need to learn the secrets of the castle. How many staircases does Hogwarts have?

Answer: 142.

This one is a doozy. Name every ingredient contained in Polyjuice Potion. (Hint: There are seven.)

Answer: Lacewing flies, leeches, powdered Bicorn horn, knotgrass, fluxweed, shredded Boomslang skin, and a bit of the person you want to turn into.

Quidditch players are constantly at risk of injury throughout the game. How many possible Quidditch fouls are there?

Quidditch as seen in the Harry Potter movies

Answer: 700.

In The Sorcerer’s Stone, Harry and his friends are awarded last-minute House Points, putting Gryffindor ahead of Slytherin by just 10 points. What was the final tally?

Answer: 482 to 472.

Ever the eccentric, Dumbledore has a scar above his left knee that is a perfect map of what?

(Warner Bros

Answer: The London Underground.

This one is a two-parter. Where does Vernon Dursley work, and what does the company produce?

Answer: Grunnings, a drill manufacturer.

For Harry's 17th birthday, what colour did Hermione turn the leaves of the Weasley’s crabapple tree?

Answer: Gold.

Cedric Diggory let Harry use the prefect's bathroom in The Goblet of Fire. What man's statue is next to the special lavatory entrance?

Pattinson kicked off his film career playing Cedric Diggory in the Harry Potter series

Answer: Boris the Bewildered.

Harry is known for his talents in Quidditch. What is the max speed for a Firebolt broomstick?

Answer: 150 mph.

Harry first took the Knight Bus in The Prisoner of Azkaban. How much does a ticket cost if it includes hot chocolate?

The Knight Bus 

Answer: 14 sickles.

In the Hall of Prophecy there are rows and rows of glowing orbs. Which row contains the prophecy about Harry and Voldemort?

Ralph Fiennes as Lord Voldemort in the Harry Potter films

Answer: Row 97.

In the Quidditch World Cup, Ireland's team had three main chasers: Mullet, Troy, and Moran. Which one scored the first goal?

Answer: Troy.

On the wall across from the Room of Requirement, there is a tapestry showing a wizard trying to teach trolls ballet. What's his name?

Answer: Barnabus the Barmy.

The visitor’s entrance to the Ministry of Magic is an abandoned red telephone booth in London. What is the five-digit code you must dial to get in?

Answer: 6-2-4-4-2. (Bonus: This spells M-A-G-I-C on a phone's keypad.)

What is the name of the Apparition instructor who comes to Hogwarts in Harry’s sixth year?

Answer: Wilkie Twycross.

Voldemort stole Helga Hufflepuff's cup from an old woman named Hepzibah Smith. What was the name of her house-elf?

Answer: Hokey.

Ginny Weasley bought a pet Pygmy Puff from her older brothers' joke shop. What did she name it?

Bonnie Wright and Daniel Radcliffe as Ginny Weasley and Harry Potter

Answer: Arnold.

What is Fred Weasley’s chosen code name on Potterwatch, the secretive radio programme set up by the Order of the Phoenix?

Answer: Rapier.

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