A: What is Jeopardy!?

America’s favorite quiz program celebrates its 50th anniversary on March 30—and this season marks its 30th year with host Alex Trebek at the helm. Can solve these 20 real Final Jeopardy! clues from over the years, courtesy of J! Archive, a meticulous fan-maintained database? Scroll down for the correct responses, and post your score in the comments.

1. Category: Singers
A: The only solo artist to have 5 Billboard No. 1 albums before the age of 19.

2. Category: Science History
A: An experiment with mirrors on Mt. Wilson & Mt. San Antonio, Calif. determined what became an accepted figure for this.

3. Category: Shakespeare Titles
A: It’s not one of the Bard’s better-known comedy titles, but has the distinction of containing the most apostrophes.

4. Category: European Capitals
A: Although capital of its country, it is not the capital of the province in which it’s located, nor is it the seat of government.

5. Category: Facts & Figures
A: With only 58% of residents, this U.S. state has the lowest percentage of licensed drivers.

6. Category: Food & Drink
A: A sign of a trend, in 2010 this product passed Pepsi to move into the No. 2 spot in U.S. soft drink popularity.

7. Category: National Parks
A: The writings of Marjory Stoneman Douglas helped preserve this area she dubbed “The River of Grass.”

8. Category: U.S. Colleges
A: This college for women was founded by Joseph Taylor, a physician who lived not far from Philadelphia.

9. Category: The U.S. Space Program
A: Of the Apollo missions, the total number that successfully landed men on the moon.

10. Category: College Football
A: His name was immortalized in 1936; he holds the record for head coaching at the most Division I or major schools—8.

11. Category: Musicals
A: The two longest-running musicals in Broadway history; Cameron Mackintosh produced both of them.

12. Category: Historic Englishmen
A: Ironically, he might have saved himself from death in 1779 if he had known how to swim.

13. Category: Presidents
A: The last time there were no living ex-presidents was when this man was president.

14. Category: Hit Songs
A: This No. 1 hit from 1968 was part of a hit film’s soundtrack and was originally written about Eleanor Roosevelt.

15. Category: Fictional Characters
A: He first appeared in Kipling’s 1892 story “In the Rukh” as an adult who now & then refers to his very odd childhood.

16. Category: Mammals
A: One type of this aquatic animal gives milk that’s 65% fat; pups are weaned in 4 days, the least of any mammal.

17. Category: Fruit
A: This fruit of North America shares its name with a literary character who debuted in an 1876 novel.

18. Category: Animals
A: Because of the requirements in pumping blood to its brain, it has the highest blood pressure of any living animal.

19. Category: Authors on Authors
A: Faulkner said this writer “has no courage” and “has never used a word where the reader [may need] a dictionary.”

20. Category: American History
A: On April 14, 1865, Lincoln authorized this government agency; its main job then was to protect against counterfeit.

Questions:

1. Q: Who is Justin Bieber?

2. Q: What is the speed of light?

3. Q: What is Love’s Labour’s Lost?

4. Q: What is Amsterdam?

5. Q: What is New York?

6. Q: What is Diet Coke?

7. Q: What is Everglades National Park?

8. Q: What is Bryn Mawr College?

9. Q: What is 6? (11, 12, 14, 15, 16, and 17)

10. Q: Who is John Heisman?

11. Q: What are Cats and Les Miserables?

12. Q: Who is Captain Cook?

13. Q: Who is Richard Nixon?

14. Q: What is “Mrs. Robinson”?

15. Q: Who is Mowgli?

16. Q: What is the seal?

17. Q: What is the huckleberry?

18. Q: What is the giraffe?

19. Q: Who is Hemingway?

20. Q: What is the Secret Service?