SOLUTION: A box contains 3 red marbles, 3 blue marbles. ,3 green marbles , 3 yellow and 3 purple marbles. What is the smallest number of marbles that we need to take out of the box to make s

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Question 1144956: A box contains 3 red marbles, 3 blue marbles. ,3 green marbles , 3 yellow and 3 purple marbles. What is the smallest number of marbles that we need to take out of the box to make sure we have 2 marbles of the same colour?
Answer by ikleyn(52781)   (Show Source): You can put this solution on YOUR website!
.

In the worst case, you will take 1 red, 1 blue, 1 green, 1 yellow and 1 purple marble.


After that, whichever other marble you will take from the box, you will have at least 2 marbles of the same color.


ANSWER.  6 marbles.

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