Black Friday: lifetime access is on a special offer in the app, until November 30. Black Friday: special offer on lifetime access, until November 30. Download
이오진법은 2와 5의 조합으로 숫자를 표현하는 방법입니다.Iojinbeopeun 2wa 5ui johamhuro sujereul pyohyeonhaneun bangbeobimnida.Biquinary is a method of representing numbers using a combination of 2 and 5.