tim so tu nhien lon nhat co 4 chu so biet rang so do : 8 du 7 , so do : 125 du 4

Tim so tu nhien co hai chu so,biet rang so do lon gap 6 lan tong cac chu so cua no

tim so tu nhien co 4 chu so biet rang khi viet them chu so 7 vao ben phai so do thi duoc so co 5 chu so lon hon so phai tim11212 don vi

tim mot so tu nhien co 2 chu so biet rang neu viet them chu so 1 vao ben trai va ben phai so do thi duoc so co 4 chu so,lon gap 32 lan so da cho

tim so tu nhien co 2 chu so,biet rang neu them chu so 1vao giua 2 chu socua so do thi duoc so moi lon hon 7

lan so can tim la 4 don vi

tim 1 so tu nhien co 2 chu so biet rang so do lon hon tong cac chu so cua no la 5 don vi

tim so tu nhien lon nhat co3 chu so khac nhau biet rang so do bang tong tat ca cac so co hai chu so khac nhau duoc lap tu ba chu so cua so do

Tim 1 so tu nhien co 2 chu so , biet rang neu viet them 1 chu so 4 vao ben trai so do thi ta duoc so moi lon hon gap 26 lan so ban dau.

Tim so tu nhien co 2 chu so biet rang chu so hang chuc lon hon chu so hang don vi la 2 va so do lon hon tong cac binh phuong cac chu so cua no la 1.