0000000000000000000000000000000000000000000000o0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000o0000000000000000000000000000000000000000000000000000000000000000000000000o00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000o00000000000000000000000000000000000000000000000o00000000000000000000000000000000000000000000000000000000000000000000000000000000000.
có bao nhiêu chữ o
Tôi xin đoán, có 5 chữ o :))
Tự bản thân bạn đã biết rùi hỏi làm chi z