Các câu hỏi tương tự
thay dau dau sao bang nhung chu so thich hop de co phep tinh dung 92 nhan sao sao=sao sao sao
Thay cac dau * bang cac chu so thich hop de co mot phep tinh dung:
***-**=1
****-***=1
thay dau * bang nhung chu so thich hop: **+**=*97
thay dau * bang nhung chu so thich hop
**+**=*97
thay chu a va dau * boi chu so thich hop de aaa x a = ***a
cac chu so o dau * ko nhat thiet phai bang nhau
thay dau *bang nhung chu so thich hop
** + ** = *97
thay chu so va dau * bang cac chu so thich hop
aaa x a =3**a
Thay dau * boi chu so thich hop de co 517**chia het cho ca ba chu so 6,7,9
thay dau x boi cac so thich hop de cac so sau day la cac so nguyen to 12x ; 36x