SOLUTION: There are 4 red, 4 white, 4 blue and 4 yellow balls in a bag (a total of 16 balls). They are picked at random. How many times you have to pick the balls (one at a time) so that you

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Question 106873: There are 4 red, 4 white, 4 blue and 4 yellow balls in a bag (a total of 16 balls). They are picked at random. How many times you have to pick the balls (one at a time) so that you have at least one ball of each color in your hand?
Thank you.
Answer by stanbon(57219) (Show Source):
You can put this solution on YOUR website!
There are 4 red, 4 white, 4 blue and 4 yellow balls in a bag (a total of 16 balls). They are picked at random. How many times you have to pick the balls (one at a time) so that you have at least one ball of each color in your hand?
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13
Pick 4 red, then 4 white, then 4 blue, the next ball must be yellow.
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Cheers,
Stan H.