tim trung binh cong cua cac do trong day do 1,3,5,7....2013,2015
Tim so trung binh cong cua tat ca cac so co 4 chu so khac nhau lap tu cac chu so 1,3,5,7 . minh dang voi
tìm trung binh cong cua tat ca cac so hang trong day so sau
3,7,11,..............95,99,103
trung binh cong cac do trong day do 2,4,6,8...2012,2014
trung binh cong cua cac so trong day so 2,4,6,8,....2012,2014
tim trung binh cong cua cac so hang trong day so sau
3,7,11.......95,99,103
Tinh trung binh cong cua cac so trong day so 2; 4; 6; 8; ...; 2012; 2014
bai7: Trung binh cong cua hai so la 35. So lon gap 6 lan so be. Tim hai so do?
giup minh voi
minh tich tat ca cac ban tra loi
dang can gap xin cac ban day
Trung binh cong cua n so la 80,biet mot trong cac so do la 100.Neu bo so 100 thi trung binh cong cac so con lai la 78. Tim n ?