Do U Know??

Do U Know??

it's all about what u know

Start
Do U Know??
Duration of first world war?
Question 1 out of 5
Do U Know??
longest river in the world?
Question 2 out of 5
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largest country in the these?
Question 3 out of 5
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number of country in africa?
Question 4 out of 5
50 51 52
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Highest population rate country?
Question 5 out of 5