OK.I was thinking about it....I get it.Look : it means Ohm.The ohm has this symbol: Ω. ..But I feel that your Ohm is a little deformed. :D Wikipedia : Ohm's law states that the current through a conductor between two points is directly proportional to the potential difference across the two points. (o 0 )

Hello Hannah, I think that 几 should be one of the 100 most frequently used Chinese words. It basically means SEVERAL 几本书 Several books (1<几<10) 十几本书 More than 10 books, (10<十几<20) or 10 plus 二十几本书 More than 20 books, (20<二十几<30) or 20 plus 几十本书 Several dozen books, (20<几十<100) 几百本书 Several hundred books (200<几百<1000) 几千本书 Several thousand books (2000<几千<10000) Going back to your sentence, 我有十几张邮票。I have more than ten stamps. 教室里有几十个学生。There're several dozen students in the classroom. 我有十几年的工作经验 I have 10 plus years of working experience. (10+ years of experience) 我有二十几年的工作经验 I have 20 plus years of working experience. (20+ years of experience)

“几”means "several" .

It is a approximate number ，means you dont know accurate number。Dozens students=几十个学生。any question？