Granny tells Dilly that her glove drawer contains $$1$$ left-hand blue glove, $$2$$ left-hand green gloves, $$3$$ right-hand blue gloves, and $$4$$ right-hand green gloves, and asks her to bring a pair of gloves from the drawer. Unfortunately Dilly cannot tell the difference between left-hand and right-hand gloves, but, thankfully, can identify blue and green. What is the smallest number of gloves that Dilly should bring, in order to be sure that these include a matching pair?  Circle the correct answer.  $$10$$~ ~ ~ $$8$$~ ~ ~ $$6$$~ ~ ~ $$4$$~ ~ ~ $$2$$ 
Overseas Competition->Knowledge Point->Combinatorics->Pigeonhole Principle->Worst Case in Pigeonhole Principle Problems