i would say the surgeon is the father's dad and the son was also a dad. so the surgeon is the son's grandad.

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the surgeon is a women

my answer the son is also a father but he died, the father i the surgoens son

The surgeon is the mother

The surgeon is a mother.

The surgeon is the father of the father

The surgeon is the grandad.

the son may be a dad also

the dad may not be the father of the son, but from another veichle


Solve the riddle

A father and son are in a horrible car crash that kills the dad. The son is rushed to the hospital; just as he’s about to go under the knife, the surgeon says, “I can’t operate - that boy is my son!”