Question

looking at a photograph a person said i have no brother or sister but that man's father is my father son. whose photograph was the person looking at???​

Answer 1

He's looking at himself.

Hope you found this helpful :)

Answer 2

Answer:

he is looking at his son's picture

Explanation:

as he didn't have any brothers or sisters,

his father's son is himself.

so, the picture will be his son's.