Common knowledge, history, science, math, spelling, etc.
Try solving the basic knowledge in OX quizzes!
If you solve it for 10 minutes every day, you can master it quickly.Also, check out how many you solved in time through the challenge mode!
You can check each others records by sharing to your friends.
More data will be updated later.
If a lot of people use it, additional quizzes will be updated ^^
https://andro.io/app/oxquiz
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