1
Who is the president of United States
2
Which is the angle of 90°
3
Which is the most expensive precious stone in the world
4
What language is the most talked in the world
5
Who wrote the music of the world cup 2010
6
Which is the tallest mountain in the earth
7
In which country is the angel of independence
8
Is a state of matter
9
What is the ccurrency of United States
10
Where the Eiffiel tower is located
