Fun logic puzzles

1.Stephen was looking at a photo. Someone asked him,
"Whose picture are you looking at?" He replied: "I don't have any brother or sister, but this man's father is my father's son." So, whose picture was Stephen looking at?

2.There was a robbery in which a lot of goods were stolen. The robber(s) left in a truck. It is known that : (1) Nobody else could have been involved other than A, B and C. (2) C never commits a crime without A's participation. (3) B does not know how to drive. So, is A
innocent or guilty?

3.Suppose there is such a little town : (1) No two inhabitants have exactly the same number of hairs. (2) No inhabitant has exactly 409 hairs. (3) There are more inhabitants than there
are hairs on the head of any inhabitant. So, what is the largest possible number of inhabitants in that little town?

"All you have to do is decide what to do with the time given to you." - The Lord of The Rings, Film 1978

"It's not enough that we do our best; sometimes we have to do what's
required."- Sir Winston Churchill

"So in everything, do to others what you would have them do to
you, for this sums up the Law and the Prophets." - Matthew 7:12