Q 01/05

Duolingo's owl mascot Duo is which color, chosen as a joke because one co-founder disliked it so much?

A) Purple

B) Orange

C) Green

D) Yellow

Answer · why

C) Green

Green was co-founder Severin Hacker's least favorite color, so Luis von Ahn chose it for the mascot just to tease him.

Q 02/05

In a 2025 publicity stunt, Duolingo announced that its owl mascot Duo had been killed by which vehicle?

A) A Tesla Cybertruck

B) An ice cream truck

C) A delivery drone

D) A school bus

Answer · why

A) A Tesla Cybertruck

A Tesla Cybertruck was named as the culprit, and Duo was brought back only after learners around the world earned 50 billion XP together.

Q 03/05

What food is sold at the restaurant Duolingo runs beside its headquarters, where diners are urged to order in Spanish?

A) Paella

B) Churros

C) Empanadas

D) Tacos

Answer · why

D) Tacos

Tacos are the specialty at Duo's Taqueria, a stand next to the company's offices that brought in $700,000 in 2023.

Q 04/05

Before Duolingo, Luis von Ahn helped pioneer which everyday web annoyance, later reworked to help digitize old books?

A) Pop-up ads

B) CAPTCHA

C) Cookie banners

D) Spam filters

Answer · why

B) CAPTCHA

CAPTCHA tests were eating up millions of hours of human effort, so von Ahn's follow-up version put that typing to work deciphering words that scanners...

Q 05/05

Duolingo boss Luis von Ahn grew up in which Central American country, where he saw how costly learning English was?

A) Costa Rica

B) Honduras

C) Guatemala

D) Panama

Answer · why

C) Guatemala

Guatemala City is where von Ahn was born and raised by a single mother, who was one of the first women in the country to finish medical school.