A jar contains 20 marbles: 4 red, 6 white and 10 blue. If you remove m

1.	A jar contains 20 marbles: 4 red, 6 white and 10 blue. If you remove marbles one at a time, randomly, what is the minimum number that must be removed to be certain that you have at least 2 marbles of each color?
Answer» Here we have 10 Blue 6 White and 4 Red. The worst case scenario you pull all white and blue before you pull 2 red. Hence minimum number of marbles you need the pull is all 10 white, 6 White and 2 Red. Number of marbles to be removed = 10+6+210+6+2 = 18

A jar contains 20 marbles: 4 red, 6 white and 10 blue. If you remove marbles one at a time, randomly, what is the minimum number that must be removed to be certain that you have at least 2 marbles of each color?

Answer»

Here we have 10 Blue 6 White and 4 Red. The worst case scenario you pull all white and blue before you pull 2 red.

Hence minimum number of marbles you need the pull is all 10 white, 6 White and 2 Red.

Number of marbles to be removed = 10+6+210+6+2 = 18

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A jar contains 20 marbles: 4 red, 6 white and 10 blue. If you remove marbles one at a time, randomly, what is the minimum number that must be removed to be certain that you have at least 2 marbles of each color?

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