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제목1st LS(220115) Geometric Sequences (PDF 31)2022-01-18 10:19:15
작성자 Level 10

https://youtu.be/7LsoO2yz98U 

-1st LS(220115) Geometric Sequences (PDF 31) Level 102022-01-18
다음2nd LS(220120) Geometric Series (PDF 40) Level 102022-01-21