A person has a devide of which the password includes five dights from 1 to 5. One day he forgot the password and tried to open it. The first time, he
A person has a devide of which the password includes five dights from 1 to 5. One day he forgot the password and tried to open it. The first time, he tried 12345. No dight in the correct place and no place of correct dights appeared. The second time, he tried 41532. There were two … Đọc tiếp