You will be shown 10 random numbers between 1 and 100 without knowing what's next. Your task is to put them in order! But beware, if a number cannot be placed, the quiz ends...
Is this by total speakers or native speakers? If it is by total, Malay should be the most spoken of the Austronesian, as most Indonesians learn it as a second language (referred to as Bahasa Indonesia), for a total of 200-250 million speakers. If it's by native speakers, then Spanish and Yoruba should be the leaders in Indo-European and Niger-Congo, respectively.
A nice quiz, but what stands for 'Caucasian' language family? There is a (hypothetical) family called North Caucasian, but Georgian is by no means related to it. It's a completely different family, Kartvelian. I think this should be fixed somehow.