tong cua 3 so la 1458 tim ba so do biet STN = 1/3 STH , STB = TBC cua ca 3 so
cho 3 so co tong bang 1458 biet STN bang 1/3 STH , ST3 = TBC cua 3 so tim 3 so do
tim 3 so khac 0 biet rang 3 so do co 1 chu so 1 so co 2 chu so va mot so co 1 chu so va trung binh cong cua chung bang 37
tim so co hai chu so ,biet tong cua hai chu so la chan lon nhat co mot chu so va hieu cua hai chuso do la 3
tim so lon nhat co 3 chu so biet rang so do chia co 15 duoc thuong la so lon nhat co hai chu so va so du la so du lon nhat co the trong phep chia do.
TBC cua 2 so la 85.Tim 2 so do;biet rang khi viet them chu so 1 vao ben trai so be co 2 chu so thi duoc so lon.So lon la......So be la......(Nho giai hi tiet nhe;ai nhanh minh se tick cho).
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
biet bai nao giai ho bai y
1tim mot so co 2 chu so biet rang so do gap 5 lan tong chu cac so cua no
tim so co 3 chu chu so biet rang them chu so 5 vao ben phai so do thi so do tang them 1112dv
tim mot so tu nhien co 2 chu so biet rang them chu so 9 vao ben trai so do thi duoc mot so gap 13 lan so da cho
Tim so lon nhat co 3 chu so biet rang so do chia cho 15 dc thương la so lon nhat co hai chu so va so du lon nhat co the co trong phep chia do? ( ghi them loi giai)
