You have three jars that are all mislabeled. One contains peanut butter jelly beans, another grape jelly beans and the third has a mix of both (not necessarily half-half mix). How many minimum jelly beans would you have to pull out to find out how to fix the labels on the jars?

Labels on jars are as follows :

jar 1 : Peanut butter 
jar 2 : Grape 
jar 3 : P.b. / Grape

The answer is an integer. Just put the number without any decimal places.