Riddle – Dinner

[سلامي مرادي]

Susan has invited her family to Dinner. As her plates are not the best, Susan wants to buy new plates – one for each person at her Thanksgiving Dinner.

There’ll be 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 a daughter-in-law.

At least how many plates does Susan need to buy?

[ايمان...]

I think 12
?am I right

[سلامي مرادي]

I think 12
?am I right

sorry . that is not true.

[ايمان...]

so It is 8!!!!!!!!!!!!!!!!!!!!

[Hind_dz]

23....؟؟؟؟؟؟؟؟؟؟؟؟؟؟؟؟؟؟؟؟؟؟؟؟؟

[سلامي مرادي]

no.....no....no

[ايمان...]

come on
you are killing me what"s the answer
tell me I won"t tell anyone else hhhhhhhhhhhhhh

[سلامي مرادي]

Answer
Susan needs at least 7 plates.

Why?
The grandfather is also a father and a father-in-law.
The grandmother is also a mother and a mother-in-law.
The father is also his parents’ son (and child).
The daughter-in-law is also a mother.
The grandson is also a brother and his parents’ son (and child).

The two granddaughters are also sisters and their parents’ daughters (and children).

http://www.ego4u.com/images/contest/thanksgiving_dinner.png

So we have

one grandfather
one grandmother
two fathers (grandfather, father)
two mothers (grandmother, daughter-in-law)
four children (father, grandson, 2 granddaughters)
three grandchildren (grandson, 2 granddaughters)
one brother (grandson)
two sisters (2 granddaughters)
two sons (father, grandson)
one father-in-law (grandfather)
one mother-in-law (grandmother)
one daughter-in-law

[nihed la reine]

alot i guess
am sooooooooooo confused

[atheena]

she needs 22 plates

[_أحلام_]

i think she needs 8

[atheena]

needs 7 and thank you , its really hard riddle