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100

What is the longest river in the world?

The Nile

100

What is the biggest animal?

The blue whale

100

What is the largest country in the world?

Russia

100

What is the second largest country in the world?

China

100

What is the third largest country in the world?

Canada

200

Who´s the richest person in the world?

Jeff Bezos, the Amazon owner

200

What country produces the most oranges?

Brazil is the leading orange producer in the world producing about 30% of the world's output

200

What country has the longest paid holidays?

Austria, which guarantees workers the most time off, has a legal minimum of 22 paid vacation days and 13 paid holidays each year

200

What is the tallest animal?

The giraffe

200

What is the smallest country in the world?

The Vatican

300

What is the fastest animal?

The cheetah

300

What is the biggest flower?

Rafflesia arnoldi. It weighs 7 kg and it only grows in Sumatra, Malaysia and Borneo

300

What is the widest river?

The Amazon

300

What is the deepest ocean in the world?

The Pacific Ocean

300

What planet is the closest to the Sun?

Mercury

400

What is the smallest bird?

The hummingbird

400

What is the highest waterfall in the world?

Angel Falls (Salto Ángel) in Venezuela

400

What is the largest desert on Earth?

The Sahara Desert

400

Who´s the richest woman in the showbusiness?

Oprah Winfrey

400

What is the Chinese dialect with the most speakers?

Mandarin

500

What is the smallest vertebrate?

a fish called paedocypris progenetica that lives in Sumatra and measures 7.9 mm.

500

What is the smallest country in the world?

The Vatican

500

What is the most populated city in the world?

Tokyo, with nearly 39 million residents. 

500

In what city is the most winding street in the world?

Lombard Street in San Francisco

500

What is the most frequent letter in English?

Letter "e"

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