How big was the dinner table?

[bonanova]

At a family party, a grandfather, a grandmother, two fathers, two mothers, four children, three grandchildren, one brother, two sisters, two sons, two daughters, one father-in-law, one mother-in-law, and one daughter-in-law, sit at a table. What is the fewest number of chairs required to seat all of them? Each had his/her own chair.

[LVan Toren]

Gf is married with Gm. They have a son F, who is married with M. F and M have 3 children: a son S and two daughters D1 and D2. They need 7 chairs.

[superprismatic]

I have one question which could make a big difference. It's a bit indelicate, so I'll put it in a spoiler.

Incest. It seems that this may drastically reduce the number of chairs needed.

[bonanova]

I have one question which could make a big difference. It's a bit indelicate, so I'll put it in a spoiler.

Incest. It seems that this may drastically reduce the number of chairs needed.

Reminds me of an old song, "I'm my own Grandpa."

Work it both ways, regular and special.

How few can it get?

[Rainman]

[bonanova]

Incest family fest.png

The coveted boanova gold star for creativity.

I think you even threw in a great-grandfather and a great-grandson for good measure.