1*2*3*4*5*6*7*8*9*10=10!=3628800
tick nhé mọi người...hừ hừ...lạnh quá
kho..................lam............................tich,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,minh..........................troi........................ret............................wa.................ung ho minh.................hu....................hu..............hu................hat..............hat....................s