your brother's daughter is you niece
your second nephew
It says what relation are your brothers nieces to you.... It could be your child or your niece also causes you can have two brothers and it may be the other ones kids. Or of course it could be your brother's new wife kid by another man making her no relation.
Your brother's daughters are your nieces
4 daughters, 3 sons.
Uncle
they were brothers !!
Nieces are the daughters of your brothers and sisters. Nephews are the sons of your brothers and sisters.
The brothers of your husband are your brothers-in-law.
If there are 6 daughters and each daughter has one brother, that means there are 6 brothers. 6 daughters and 6 brothers = 12 children by using addition.
They would be great nieces or great nephews.
They are sisters; both daughters of Rhea and Cronus.
No relation.