Tong cua 3 so la 1978. So thu nhat hon tong hai so kia la 58 don vi. Neu bot o so thu hai di 36 don vi thi so thu hai se bang so thu ba. Tim 3 so do.
Tong ba so la 2068. Biet so thu hai lon hon tong cua so thu nhat va so thu ba la 124, so thu ba cong them 502 don vi thi bang so thu nhat. Tim ba so do
so thu nhat bang 3/5 so thu hai va neu giam so thu hai di 18 don vi thi so thu nhat kem so thu hai 54 don vi . tim hai so do.
tong hai so la 175. neu giam so thu nhat di 13 don vi thi so thu nhat van hon so thu hai 17 don vi. tim hai so
Cho 3 so co tong bang 272 . Biet so thu nhat kem so thu hai 36 don vi va hon so thu ba 43 don vi . Tim so thu ba
Tim 2 so biet so thu nhat hon si thu hai la 83 don vi . Mếu them vao so thu nhat 37 don vi thi duoc so moi bang 8/2 so thu 2
ghi ro ket qua loi giai nha
tim ba so co trung binh cong bang 78,biet so thu nhat kem so thu hai 16 don vi,so thu hai kem so thu ba 16 don vi.
TIM TICH CUA HAI SO TU NHIEN, BIET NEU GIAM THUA SO THU NHAT DI 6 DON VI THI TICH GIAM DI 486 DON VI,CON NEU TANG THUA SO THU HAI THEM 4 DON VI THI TICH TANG THEM 424 DON VI.
TICH HAI SO DO BANG.
Tong cua hai so la 3459 neu tang so thu nhat len 36 don vi va giam so thu hai 85 don vi thi so thu nhat hon so thu hai 262 tim so lon so be