What is my son to my niece?

Answer 1

You son and your niece are first cousins. Your son and your niece's son are first cousins, once removed.

Answer 2

Niece is to nephew as sister is to brother.

Answer 3

Son is to mother as nephew is to Aunt. Son is to farther as nephew is to Uncle. Daughter is to mother as niece is to Aunt Daughter is to farther as niece is to uncle.

Answer 4

She is your first cousin once removed, since your mother's nephew is your first cousin.

Answer 5

1st cousin