Wednesday, February 29, 2012

Jelly Beans

You have a bucket of jelly beans. Some are red, some are blue, and some green. With your eyes closed, pick out 2 of a like color. How many do you have to grab to be sure you have 2 of the same?

2 comments:

  1. To be sure, to pick atleast 2 marbles of a same color we need to grab at least 4 marbles, since the worst case is that three of them are different, the fourth marble has to be a repetition of one of three colors.

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