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There are 11 countries in Southeast Asia:

Brunei

Cambodia

Indonesia

Laos

Malaysia

Myanmar

Philippines

Singapore

Thailand

Timor-Leste

Vietnam

Five of these countries (Brunei, Indonesia, Philippines, Singapore, and Timor-Leste) are considered island countries, as they contain no land on the landmass of Asia. Malaysia is sometimes mistaken for an island country, but it possess land on the landmass of Asia.

5/16 = 0.3125, or about 31% of all Southeast Asian countries are island nations.

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12y ago

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