Here is the puzzle:
If Teresa's daughter is my daughter's mother,
What am I to Teresa?
Find puzzle here
"Teresa's daughter is my daughter's mother"
my daughter's mother is actually me (i.e. the person who is asking the puzzle).
Teresa's daughter is me (i.e. the person who is asking the puzzle is Teresa's daughter).
Note: As there are only females available for the answer, the answer cannot be a male.
Another simpler explanation
Teresa - > Daugter -> X -> is My Daugter's Mother -> Me
Hence X = Me
Hence, I am Teresa's Daughter
There are are only two solution-answers to this puzzle.
I am married to Teresa's daughter then I am the son-in-law of Teresa. If I was ever married and I am no more I am an ex-son-in-law.
I had my daughter out of wedlock, then Teresa is simply my daughter's maternal grandmother.