Candy buys $$15$$ bottles of drinks, and they are placed in order on the counter in the following way: $$2$$ bottles of milk, a bottle of juice, a bottle of coke, $$2$$ bottles of milk, a bottle of juice, a bottle of coke$$\ldots $$ According to the pattern, the $$15$$\textsuperscript{th} bottle is． 
Overseas Competition->Knowledge Point->Number Theory Modules->Remainder Problems
$$15\div 4=3\text{R}3$$. 