Các câu hỏi tương tự
thay dau * bang nhung chu so thich hop
** +** =*97
moi ve cua phep tinh deu co dau gach tren dau
Thay cac dau * bang cac chu so thich hop de co mot phep tinh dung:
***-**=1
****-***=1
dung 1 so chu so 1 va dau cac phep tinh ke ca ngoac de viet thanh bieu thuc co gia ti 100. sao cho dung it chu sao 1 nhat
thay dau * bang nhung chu so thich hop: **+**=*97
thay dau * bang nhung chu so thich hop
**+**=*97
thay dau *bang nhung chu so thich hop
** + ** = *97
thay dau * bang chu so thich hop de do 7* la hop so
thay cac chu so vao dau sao de 9 sao la so nguyen to
Chung minh rang moi uoc nguyen to cua 1*2*3*.........*2002-1 deu lon hon 2002 ( vi ko co dau nhan neu thay bang dau sao nha )