Can $R=\{(1,6),(2,7),(3,8)\}$ be said transitive? Given a relation $R=\{(1,6),(2,7),(3,8)\}$.
It is clear that it is not reflexive and symmetric but can we say that it is transitive?  

It's transitive, for there is no $y$ such that $(x,y)$ and $(y,z)$ are elements of $R$. Therefore, if $(x,y),(y,z) \in R$, then so is $(x,z)$.
