Các câu hỏi tương tự
trung binh cong cua 4 so la 16,biet trung binh cong cua so thu 3 trong 4 so do la 18.so con lai la
trung binh cong 4 so la 16 biet trung binh cong 3 trong 4 so do la 18
trung binh cong cua 3 so la so be nhat co 3 chu so khac nhau . biet so thu hai bang trung binh cong cua 2 so con lai . so thu 3 hojn so thu nhat la 14 . tim 3 so do.
trung binh cong 3 so la 98.9.tim so thu nhat biet rang so thu nhat bang trung binh cong cua 2 so con lai
cho 3 phan so,biet trung binh cong cua chung la 7/6.neu tang so thu nhat len hai lan thi trung binh cong cua chung la 41/30.neu tang phan so thu hai len hai lan thi trung binh cong cua chung la 13/9.timphan so be nhat trong ba phan so?
Trung binh cong cua 3 so la 27. Biet so thu nhat hon tong hai so con lai la 15. Tim so thu nhat.
1 .trung binh cong cua hai phan so la 5/12 .neu tang phan so thu nhat gap 2 lan thi trung binh cong cua chung bang 2/3 .tim hai phan so do .
2.trung binh cong cua ba phan so la 13 /36 .neu tang phan so thu nhat gap 2 lan thi trung binh cong cua chung bang 19/36 ,cho biet phan so thu hai lon hon phan so thu ba 1 /12. tim ba phan so do .
Trung binh cong cua ba so la 27. Biet so thu nhat hon tong hai so con lai la 15. Tim so thu nhat.
Cho 4 so 80 ; 90 ; A va b . HOi so A va B bao nhieu don vi biet so a nho hon trung binh cong cua 3 so 80 90; va a la 4 . So b lon hon trung binh cong cua ca 4 so la 12