Define binary operation * on the set {0, 1, 2, 3, 4, 5} as 
Show that zero is the identity for this operation and each element 
of the set is invertible with being the inverse of
Define binary operation * on the set {0, 1, 2, 3, 4, 5} as
Show that zero is the identity for this operation and each element of the set is invertible with being the inverse of