Vi x la so tron chuc nen x = 2040
Vay x can tim la 2040
Vì x tròn chục nên => x =2040
Vậy x thoả mãn yêu cầu = 2040
Tim x la so tròn chuc co hai chu so sao cho : 240:x<6 ??? Ghi them loigiai
TBC cua ba so la 27 biet so thu nhat hon tong hai so con lai la 15 tim so thu nhat ghi them loi giai
Tim so co 2 chu so biet tong cua hai chu so do =14 va hieu la 14 ?? Ghi them loi giai!!!
Tim phan so X/Y biet hieu cua X va Y bang 8 va X/Y sau khi rut gon chi bang 5/3?
Ghi them loi giai!!
Hai so le co tong la 2010 tim hai so do biet giữa chung co 19 so le khac? Ghi them loi giai
Hai so tu nhien co tong la 2009 tim hai so do biet giữa chung co tat ca 15 so chan? Ghi them loi giai
tim x biet 128<x<150 x la so tron chuc
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)
a ,Tim so tu nhien x , biet : x<3
b , Timso tu nhien x , biet : x la so chon chuc va 28 < x <48
