Quoc: The country with the single largest population of Muslims is Indonesia in Southeast Asia, which on its own hosts 13 % of the world's Muslims. Together, the Muslims in the countries of the Malay Archipelago (which includes Brunei, Singapore, Malaysia, Indonesia, the Philippines and East Timor) constitute the world's second or third largest population of Muslims. Here Muslims are majorities in each country other than Singapore, the Philippines, and East Timor.

Which country has the highest number of muslim?
HW Chung: OK, some thoughts:
The relevant sentence in the passage is: The country with the single largest population of Muslims is Indonesia in Southeast Asia, which on its own hosts 13 % of the world's Muslims. The answer is Indonesia.