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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