VINASTUDY - HỆ THỐNG GIÁO DỤC TRỰC TUYẾN DÀNH CHO HỌC SINH TỪ LỚP 1 - 12

There were 10 lamp posts along a road. A technician was informed to repair the third lamp post. Upon arrival, he realised he was at the other end of the road. How many lamp posts did he have to walk past before reaching the right lamp post ?

IKMC Grade 1 - 2

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Thời gian làm việc

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