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The Derivative

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Nerd Zoology: a Phylogenetic Quiz

The most tricky abstract logic test

The Ultimate Emoji Test, B1 → C2

Thirty Questions on Global History

Internet & Networks

IELTS Writing Task 2 Vocabulary

Math — Magic Quiz

Computational complexity of STL algorithms and container methods

Leonardo da Vinci from "A" to "Z": artist, inventor, scientist

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English test| Modal verbs: big brain or noob

Ⓜonetary economics @ Only economics

C#.Advanced

⚜️professional chess endgame [K+P] ⚜️

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Medical knowledge test

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Inorganic Chemistry - Important and fun quiz for JEE,NEET,KEAM,CLASS XII,CLASS XI and other government exams.

From Gold to bitcoin, 30 questions about the world of finance.

Тест на знание английского языка

⭐Английский язык. English language test Placement test Intermediate for ESL students Divenglish course

C++ knowledge test

Cocktails Through the Ages

Idiomatic expressions related to color

Dentistry Quiz

The Javascript Quiz

Food & Nutrition

30 questions about The Untamed (陈情令)

Retrogames Advanced Knowledges

Calculus Quiz

JavaScript is drunk!

Physical Science - For your final year of schooling

Agricultural Production Economics

GMAT Preparation - Quant Section

History of the second half of the 19th century and more

Electrochemistry Test