tổng là 638x2=1276
số bé là: (1276-254):2=511
Tổng là: 638*2=1276 Số bé là : [1276-254] :2=511 D/S:511
Cho 2 so co trung binh cong la 638 va hieu cua chung bang 254 . Tim so be
cho 2 so co trung binh cong bang638 va hieu cua trung bang 254 . Tim so be
tim hai so biet trung binh cong cua chung bang 17 va so lon hon so be la 10
bai 1: tim hai so chan lien tiep co tong bang 406.
bai 2: trung binh cong cua 2 so la 512. hieu cua 2 so la so chan be nhat co 3 chu so khac nhau. tim hai so do.
tim hai so biet trung binh cong cua chung bang 30 va so lon hon so be la 4 dien hai so vao trong
tim hai so biet trung binh cong cua chung bang 18 va so lon hon so be la 6 dien2 so vao o trong
tim hai so co hieu bang 698 va neu lay so thu nhat cong voi so thu hai va cong them tong cua chung thi duoc ket qua bang 2016.
so bi tru va so tru lan luot la
Trung binh cong cua hai so la 50 va hiệu cua chung bang 8.Tim hai so do
Tim hai so chan biet trung binh cong cua hai so do bang 184 va o giua chung co 3 so chan
