cho hai so tu nhien co trung binh cong cua hai so tu nhien bang 1485 va biet neu viet them chu so 1 vao ben trai so be ta duoc so lon . tim so be
1. mot cua hang nhap vao moi hop banh la 70000 dong.hoi cua hang do phai ban ra voi gia bao nhieu de duoc lai 20% gia ban moi hop banh.
2.cho hai so tu nhien co trung binh cong cua hai so tu nhien bang 1485 va biet neu viet them chu so 1 vao ben trai so be ta duoc so lon.tim so be ?
3.trung binh cong cua tat ca cac so tu nhien co 3 chu so.
T rung binh cong cua 2 so tu nhien la 117 tim 2 so do biet rang neu viet them chu so 1 vao ben trai so be thi ta duoc so lon
trung binh cong cua hai so tu nhien bang 1486.Biet neu viet them chu so 1 vao truoc so be ta duoc so lon .tim so be
trung binh cong cua 2 so tu nhienbang 2375. tim so be biet, neu viet them chu so 3 vao ben trai so be thi ta duoc so lon. tim so be
giai thich cho minh hieu nha
Tim mot so tu nhien co 5 chu so , biet rang neu viet them 2 chu so vao ben phai so do thi duoc so lon gap 3 lan so viet them chu so 2 vao ben trai so do .
trung binh cong cua 2 so la 117 tim 2 so do biet rang neu viet them chu so 1 vao ben trai so be thi duoc so lon tim
trung bing cong cua 2 so tu nhien la 963.neu viet them chu so 1 va ban trai so be thi duoc so lon . tim so lon
cho hai so tu nhien co tong bang 514. tim so be biet neu viet them chu so 8 vao ben phai so be thi duoc so lon da cho