brainiebean123: there are 5 sisters they all have a brother each how many brothers are there ??
If the sisters are all siblings then they all have the same brother, so there is just one brother.
However,
If none of the sisters are siblings to each other then there must be five brothers.
However
If some are siblings and not others there could be 2 to 4 brothers.
so
There could be any number from 1 to 5 brothers.
However,
if they all have a brother does that necessarily meant that they don't have more than one brother? I think that they could have lots of other brothers.
so
that means there is at least 1 brother but there could be many.