Trung bình cộng:
(123 + 456) : 2 = 289,5
Đáp số: 289,5
Trung bình cộng:
(123 + 456) : 2 = 289,5
Đáp số: 289,5
Tim hai so chan biet trunh binh cong cua hai so do la 184 giua chung co ba so chan
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 ?
trung binh cong cua N la 80 biet 1 trong nhung so do la 100 . neu bo so 100 thi thi trung binh cong cua cac so con lai la 78 . tim N
trung binh cong cua n so la 80 biet mot so trong do la 100. neu bot di 100 thi trung binh cong cua cac so con lai la 78. tim n
trung binh cong cua 3 so la 150 neu gap so thu nhat len 3 lan va giu nguyen cac so kia thi trung binh cong cua 3 so khi do la 162
Tong cua cac so hang la 500.Trung binh cong cua chung la 125.Hoi tong co bao nhieu so hang?
trung binh cong cua cac so le tu 10 den 20
trung binh cong cua ba so la 36 biet so thu nhat la 45 so thu hai bang 1/3 so thu nhat tim so thu 3
So trung binh cong cua cac so tron chuc be hon 100 la...
trung binh cong cua cac so chan co 2 chu so la bao nhieu