Tim so tu nhien co 2 chu so biet rang
a. So do gap 6 lan tong cac chu so cua no
b. So do gap 7 lan tong cac chu so cua no
c. So do gap 8 lan tong cac chu so cua no
d. So do gap 9 lan tong cac chu so cua no
Tim so co ba chu so biet rang so do gap 5 lan tich cac chu so cua no?
Giai theo cach CAU TAO SO nha
tim 1 so co 3 chu so biet rang no gap 11 lan tong cac chu so cua no
tim 1 so biet so do gap 6 lan tich 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 3 chu so biet rang so do gap 11 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 1 so co 2 chu so biet rang so do gap 8 lan tong cac chu so cua no
tim 1 so co 2 chu so biet rang so do gap 9 lan tong cac chu so cua no