A question-and-answer App that contains all kinds of knowledge. You can set the type and number of questions you want to answer, and then answer the questions. Multiple-choice questions and yes-no-choice questions appear randomly. App contains multiple types, such as: general knowledge, books, film, music, musicals, television, video games, board games, nature, computers, math, mythology, sports, geography, history, politics, art, celebrities, animals, vehicles , comics, gadgets, etc.