HOC247 is a leading online learning application for K12 education. It offers a wide range of features including textbook solutions, exercise book solutions, advanced textbook solutions, and offline downloads. With its AI technology, students can quickly find solutions by taking a photo and receive answers within 2 seconds. The app also provides a comprehensive collection of online multiple-choice tests based on mid-term exams, final exams, and national high school exams, as well as mixed-topic quizzes. With over 18 study tools, HOC247 helps students excel in subjects such as Math, Physics, Chemistry, Biology, Literature, English, History, Geography, Civic Education, Computer Science, and Technology, aligning with the latest curriculum from the Ministry of Education and Training. It also keeps up with the latest textbooks, including the "Cánh Diều" series, the "Kết Nối Tri Thức" series, and the "Chân Trời Sáng Tạo" series.