Based on the search results, the G20 comprises 19 countries and the European Union. All G7 countries (Canada, France, Germany, Italy, Japan, the United Kingdom, and the United States) are members of the G20, making statement 1 correct. All BRICS countries (Brazil, Russia, India, China, and South Africa) are also members of the G20, making statement 2 correct. However, not all ASEAN countries are members of the G20; only Indonesia is a member, making statement 3 incorrect. All permanent members of the UN Security Council (China, France, Russia, the United Kingdom, and the United States) are members of the G20, making statement 4 correct. Therefore, the correct statements are 1 and 4.