Tong cua 2 so do la: 82.2=164
So lon la: (164+15):2=89,5
số bé là:164-89,5=74,5
Tong cua 2 so do la: 82.2=164
So lon la: (164+15):2=89,5
số bé là:164-89,5=74,5
trung binh cong cua hai so la 257.9.so be it hon so lon la 95.8. tim hai so do
cho hai so biet so lon la 1516 va so nay lon hon trung binh cong cua hai so la 173.tim so be
trung binh cong cua hai so la 257,9.So be it hon so lon ls 95,8.
Tim hai so do
trung binh cong cua 3 so la 4 . Tim ba so do , biet rang so thu hai lon hon so thu nhat la 1,2 va be hon so thu ba la 2,4
trung binh cong cua 2 so la 3,76.so lon hon so be la 2,. tim 2 so do ?
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 bing cong cua hai so la 257,9 .So be it hon so lon la 95,8 .Tim 2 so do
trung binh cong cua ba so la 12 .tim moi so biet so thu nhat lon hon so thu hai la 1.2 va so thu hai lon hon so thu ba la 2.4
cho 2 so biet so lon la 7,2 va lon hon trung binh cong cua 2 so la 1,4 . tim so be