Question mark

[lagren]

Which of the sentence where a question mark has been incorrectly used.

1. Have you heard the song "Yesterday?"
2. It is one of my friend"s favorites, and in aletter she wrote to me she asked,"Do you like it?"
3. I think it's a powerful(?) piece of music.
4. The Beatles first sang it in 1965 (?) at a concert here.

Thank you for your help.
lagren

[Pete]

Which of the sentence where a question mark has been incorrectly used.

1. Have you heard the song "Yesterday?"
2. It is one of my friend"s favorites, and in aletter she wrote to me she asked,"Do you like it?"
3. I think it's a powerful(?) piece of music.
4. The Beatles first sang it in 1965 (?) at a concert here.

Thank you for your help.
lagren
In sentence 1, the question mark is not part of the title, so it should not be inside the quotes.