Is the action of $G$ on itself ($X=G$) via left multiplication doubly transitive?
(I know it's transitive but can't figure out how to prove or disprove $2$-transitivity)
Edit - Doubly transitive - For any $x_1, x_2, y_1, y_2 \in X$ with $x_1\neq x_2$ and $y_1\neq y_2$, there exists some $g\in G$ such that $gx_1=y_1$ and $gx_2=y_2$. See: https://groupprops.subwiki.org/wiki/Doubly_transitive_group_action
HINT: If $y_1 = g x_1$, $y_2 = g x_2$, then $$y_1^{-1} y_2 = x_1^{-1} x_2$$
( like the "vectors" $x_1 x_2$ and $y_1 y_2$ are equal)