When I was waiting for a bus at a station. I saw a young man get into a telephone box near the station. After a short time, he came out and very sad. As he saw me, he came over".

    "Good afternoon, sir," he said. "When was Abraham Lincoln born, do you know?"

    I felt a littleat his words. "Something may be wrong with him," I thought. Then he askedand I could see that he was not joking. So I thought for a minute andhim that Abraham Lincoln was born in 1809.

    The young man walked into the telephone box again. A few minutes later, he came out. He thanked me and told me that he wanted to make a telephone call to his friend but hehis telephone number.

    "Youme remember it," he said. "His telephone number is '180909', and you can remember it easily if you know when the great man was born."