tong cua 3 so la 1458 tim ba so do biet STN = 1/3 STH , STB = TBC cua ca 3 so
TBC cua 3 so la 396 . Biet rang STN co 3 chu so STH co hai chu so STB co 1 chu so . Tim ba so do
Tim hai so co 2 chu so biet tong hai chu so cua so do bang 9 va hieu cua hai so do bang 3
Cho 3 so co tong la 5020.Biet so thu nhat bang 3/4 so thu hai,so thu hai bang 1/3 so thu ba .Tim 3 so do.
tim hai so biet hieu giua hai so do bang thuong giua so lon nhat co 4 cs voi so le nho nhat co hai cs con tong cua chung bang tich giua so nho nhat co 3 cs deu le voi so co 3 cs giong nhau chia hat cho 5
tim so co 3 chu so. Biet trung binh cong cua 3 chu so la 2 va chu so hang tram bang tong chu so hang chuc va hang don vi. Tim 3 chu so do ?
tim phan so bang 2/3 , biet rang tong cua tu so va mau so cua phan so do bang 25
Tim hai so biet tong hai so bang so lon nhat co 3 chu so va hieu cua chung bang so lon nhat co 2 chu so?
Tim so co hai chu so, biet chu so hang don vi hon chu so hang chuc la 3, tong cua so phai tim va so viet theo thu tu nguoc lai cua so do bang 143