Suppose there are $$x$$ red marbles, $$y$$ green marbles and $$z$$ blue marbles. Thus, we can get  $$\begin{cases} x+y=14① \textbackslash\textbackslash{} y+z=16②\textbackslash\x+z=18③\end{cases}$$,  ①$$+$$②$$+$$③: $$2x+2y+2z=48$$, $$x+y+z=24$$. 
In a jar of red, green, and blue marbles, all but $$16$$ are red marbles, all but $$18$$ are green, and all but $$14$$ are blue. How many marbles are in the jar? ． 

1. $$16$$ 
2. $$18$$ 
3. $$20$$ 
4. $$24$$ 
5. $$36$$ 