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 3 chu so, biet so do gap 20 lan tong cac chu so cua no
tim cac so co 2 chu so biet so do gap 7 lan tong cac chu so cua no la 6 don vi
tim so tu nhien co 3 chu so,biet rang so do gap 20 lan tong cac chu so cua no
tim so co 2 chu so biet so do gap 8 lan tong cac chu so cua no
tim so co 2 chu soac chu so cua no, biet rang so do gap 8 lan tong cac chu so cua no.
tim so co 2 chu so, biet rang so do gap 8 lan tong cac chu so cua no
tim so co 2 chu so biet so do lon gap 8 lan tong cac chu so cua no
tim 1 so co 2 chu so biet rang so do gap 8 lan tong cac chu so cua no