Tokyo Olympics 2020 September 23, 2022 [Logical thinking quiz]Finding outliers Arithmetic Olympics fun problem[Arithmetic for elementary school students]
Tokyo Olympics 2020 July 29, 2022 [As expected, the Arithmetic Olympics]Graphic problems that can be easily solved by those who notice[Arithmetic for junior high school exams]
Tokyo Olympics 2020 April 29, 2022 [One-shot test of creativity]Elementary school students who can solve graphic problems in an instant[Junior Arithmetic Olympics]
