2 câu trả lời
10000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000........0visao
có 9.........................................................................................99999999999.........................99999999 vì sao