Languages by population (Score 1)

The top 11 languages in order of world population who speak it is, (Main "type" of language in parentheses):

Chinese (Mandarin)
Spanish (Spain)
English (More people in US than UK, but UK gets cred)
Bengali (Bangladesh)
Hindi (India)
Portugese
Russian
Arabic (Egypt, you'd be surprised how many dialects there are.)
Japanese
German
French
Those take care of ~40% of the world's population.