trung binh cong cua ba so la 97 tim mot trong ba so do biet no la trung binh cong cua so con lai
cho ba so biet trung binh cong cua so thu nhat va so thu hai bang 239 trung binh cong cua so thu 2 va so thu 3 la 248 trung binh cong cua so thu ba va so thu nhat la 295.tim so thu ba
cho 3 so biet trung binh cong cua so thu nhat va so thu hai la 1945 trung binh cong cua so thu hai va so thu ba la 1954 trung binh cong cua so thu nhat va so thu ba la 1975.tim so thu hai
cho ba so biet trung binh cong cua so thu nhat va so thu hai la 1495 trung binh cong cua so thu hai va so thu ba la 1945,trung binh cong cua so thu nhat va so thu ba la 1975.Tim so thu hai(giai theo cach lap luan)
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
Trung binh cong cua bon so bang 25. Trung binh cong cua ba so dau bang 22, trung binh cong cua ba so cuoi bang 20. Tim trung binh cong cua so thu hai va thu ba?
trung binh cong cua bon so la 14 biet trung binh cong cua ba so trong bon so la 15 tim so con lai
trung binh cong cua hai so la 2011. tim so thu hai biet so thu nhat tang len gap doi thi trung binh cong bang 3014 . tim so thu hai
TRung binh cong cua ba so la 50 tim so thu ba biet rang no bang trung binh cong cua2 so dau?
̀THONG MINH MOI GIAI DĆ́