Tra loi sai roi!!!!!! Trung binh cong cua 2 so la 999 chu khong phai Tong 2 so la 999 dau ban! Minh tra loi nha !
So thu 2 la:
( 999 * 2 ) - 878 = 1120
trung binh cong cua 3 so la 650. biet so thu nhat bang so lon nhat co 3 chu so so thu hai bang so thu nhat .tim so thu 3
TRUNG BINH CONG CUA 2 SO LA 123 . SO THU NHAT LA SO BE NHAT CO BA CHU SO . TIM SO THU HAI
TRUNG BINH CONG CUA HAI CHU SO LA 135 . TIM HAI SO DO, BIET RANG SO THU NHAT GAP 4 LAN SO THU HAI
GIUP MIK NHA , MOI NGUOI
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
Trung binh cong cua 2 so la so lon nhat co 2 chu so , biet so thu 1 la 119.Vay so thu 2la
trung binh cong cua ba sola so lon nhat co hai chu so tim moi so do biet so thu nhat bang mot phan nam so thu hai so thu ba bang trung binh cong hai so dau
Trung binh cong cua 3 so la 100 so thu nhat co chu so so thu hai la so nho nhat co 3 chu so giong nhau tim so thu ba
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
tim 2 so biet trung binh cong cua chung la 875 va so lon hon trong 2 chu so do la so lon nhat co 3 chu so
trung binh cong cua hai so la so lon nhat co ba chu so biet so lon la so nho nhat co bon chu so khac nhau vay so be la................
