In his pocket a boy has 3 red marbles, 4 blue marbles and 4 green marbles. How many marbles will he have to take out of his pocket to ensure that he has taken out at least one of each color?
Solution
Correct Answer: Option C
The worst scenario would be that he has taken 4 blue and 4 green, total of 8 marbles, and still doesn't have 3 distinct colors. But the next draw (9th) will surely be the third color red as there is no other color marble left in pocket.
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