Ai là triệu phú (lit. 'Who Is the Millionaire') is a Vietnamese game show based on the original British format of Who Wants to Be a Millionaire?. The show was hosted by Lại Văn Sâm from its debut until 2017, Phan Đăng from 2018 to 2020, and Đinh Tiến Dũng from 2021 onward. The main goal of the game is to win the top prize (currently 250,000,000₫ from 2022) by answering 15 multiple-choice questions correctly. There are four lifelines – 50:50, Phone a Friend, Plus One (first appeared in 2020) and Ask Two Experts (can be used after the fifth question, first appeared in 2020). Ai là triệu phú? began broadcasting on January 4, 2005.
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