五百五十
3."Computer Basic Knowledge Distant Leaning Course "a set of six volume, with box packing, each pack sells HK$550. Had printed 2,000 sets, already completely sold.
4.A group of 550 teachers, parents, local residents and administrators in an American school district met to discuss, and in some cases argue over, how to improve education and deal with the districts budget crisis.
5.The circumference measures 550 li, stretching from Nashan to Lungyuankou (both in Yunghsin County), Hsincheng, Maoping, Talung (all in Ningkang County), Shihtu, Shuikou, Hsiatsun (all in Linghsien County), Yingpanhsu, Taichiapu, Tafen, Tuitzechien, Huangao, Wutoukiang and Che-ao (all in Suichuan County) and back to Nashan.
