Bart has an M\&M\textquotesingle s chocolate pack with 3 red M\&M\textquotesingle s chips, 4 yellow M\&M\textquotesingle s chips and 5 brown M\&M\textquotesingle s chips. Bart wants to get 2 M\&M\textquotesingle s chips of different colours without looking. What is the smallest number of M\&M\textquotesingle s chips he needs to take out to make sure that he gets what he wants? 
Overseas Competition->Knowledge Point->Counting Modules->Statistics and Probability